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* MySQL sequence emulation using auto_increment
* fixed indentation
This commit is contained in:
Stig Bakken
parent
a762072659
commit
48e7da206f
1 changed files with 391 additions and 301 deletions
446
pear/DB.php
446
pear/DB.php
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@ -22,12 +22,9 @@
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// Database independent query interface.
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//
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require_once "PEAR.php";
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require_once "DB/ERROR.php";
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require_once "DB/RESULT.php";
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require_once "DB/WARNING.php";
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require_once "PEAR.php";
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/*
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/*
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* The method mapErrorCode in each DB_dbtype implementation maps
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* native error codes to one of these.
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*
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@ -35,40 +32,40 @@
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* version of it in DB::errorMessage().
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*/
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define( "DB_OK", 0 );
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define( "DB_ERROR", -1 );
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define( "DB_ERROR_SYNTAX", -2 );
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define( "DB_ERROR_CONSTRAINT", -3 );
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define( "DB_ERROR_NOT_FOUND", -4 );
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define( "DB_ERROR_ALREADY_EXISTS", -5 );
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define( "DB_ERROR_UNSUPPORTED", -6 );
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define( "DB_ERROR_MISMATCH", -7 );
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define( "DB_ERROR_INVALID", -8 );
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define( "DB_ERROR_NOT_CAPABLE", -9 );
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define( "DB_ERROR_TRUNCATED", -10 );
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define( "DB_ERROR_INVALID_NUMBER", -11 );
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define( "DB_ERROR_INVALID_DATE", -12 );
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define( "DB_ERROR_DIVZERO", -13 );
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define( "DB_ERROR_NODBSELECTED", -14 );
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define( "DB_ERROR_CANNOT_CREATE", -15 );
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define( "DB_ERROR_CANNOT_DELETE", -16 );
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define( "DB_ERROR_CANNOT_DROP", -17 );
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define( "DB_ERROR_NOSUCHTABLE", -18 );
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define( "DB_ERROR_NOSUCHFIELD", -19 );
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define( "DB_ERROR_NEED_MORE_DATA", -20 );
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define( "DB_ERROR_NOT_LOCKED", -21 );
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define( "DB_ERROR_VALUE_COUNT_ON_ROW", -22 );
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define("DB_OK", 0);
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define("DB_ERROR", -1);
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define("DB_ERROR_SYNTAX", -2);
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define("DB_ERROR_CONSTRAINT", -3);
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define("DB_ERROR_NOT_FOUND", -4);
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define("DB_ERROR_ALREADY_EXISTS", -5);
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define("DB_ERROR_UNSUPPORTED", -6);
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define("DB_ERROR_MISMATCH", -7);
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define("DB_ERROR_INVALID", -8);
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define("DB_ERROR_NOT_CAPABLE", -9);
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define("DB_ERROR_TRUNCATED", -10);
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define("DB_ERROR_INVALID_NUMBER", -11);
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define("DB_ERROR_INVALID_DATE", -12);
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define("DB_ERROR_DIVZERO", -13);
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define("DB_ERROR_NODBSELECTED", -14);
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define("DB_ERROR_CANNOT_CREATE", -15);
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define("DB_ERROR_CANNOT_DELETE", -16);
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define("DB_ERROR_CANNOT_DROP", -17);
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define("DB_ERROR_NOSUCHTABLE", -18);
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define("DB_ERROR_NOSUCHFIELD", -19);
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define("DB_ERROR_NEED_MORE_DATA", -20);
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define("DB_ERROR_NOT_LOCKED", -21);
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define("DB_ERROR_VALUE_COUNT_ON_ROW", -22);
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/*
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/*
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* Warnings are not detected as errors by DB::isError(), and are not
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* fatal. You can detect whether an error is in fact a warning with
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* DB::isWarning().
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*/
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define( "DB_WARNING", -1000 );
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define( "DB_WARNING_READ_ONLY", -1001 );
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define("DB_WARNING", -1000);
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define("DB_WARNING_READ_ONLY", -1001);
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/*
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/*
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* These constants are used when storing information about prepared
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* statements (using the "prepare" method in DB_dbtype).
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*
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@ -80,10 +77,10 @@
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* into your database).
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*/
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define( "DB_PARAM_SCALAR", 1 );
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define( "DB_PARAM_OPAQUE", 2 );
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define("DB_PARAM_SCALAR", 1);
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define("DB_PARAM_OPAQUE", 2);
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/*
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/*
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* These constants define different ways of returning binary data
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* from queries. Again, this model has been borrowed from the ODBC
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* extension.
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@ -95,45 +92,45 @@
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* hex format, for example the string "123" would become "313233".
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*/
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define( "DB_BINMODE_PASSTHRU", 1 );
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define( "DB_BINMODE_RETURN", 2 );
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define( "DB_BINMODE_CONVERT", 3 );
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define("DB_BINMODE_PASSTHRU", 1);
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define("DB_BINMODE_RETURN", 2);
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define("DB_BINMODE_CONVERT", 3);
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/**
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/**
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* This is a special constant that tells DB the user hasn't specified
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* any particular get mode, so the default should be used.
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*/
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define( "DB_FETCHMODE_DEFAULT", 0 );
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define("DB_FETCHMODE_DEFAULT", 0);
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/**
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/**
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* Column data indexed by numbers, ordered from 0 and up
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*/
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define( "DB_FETCHMODE_ORDERED", 1 );
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define("DB_FETCHMODE_ORDERED", 1);
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/**
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/**
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* Column data indexed by column names
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*/
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define( "DB_FETCHMODE_ASSOC", 2 );
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define("DB_FETCHMODE_ASSOC", 2);
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/**
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/**
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* For multi-dimensional results: normally the first level of arrays
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* is the row number, and the second level indexed by column number or name.
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* DB_FETCHMODE_FLIPPED switches this order, so the first level of arrays
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* is the column name, and the second level the row number.
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*/
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define( "DB_FETCHMODE_FLIPPED", 4 );
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define("DB_FETCHMODE_FLIPPED", 4);
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/* for compatibility */
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/* for compatibility */
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define( "DB_GETMODE_ORDERED", DB_FETCHMODE_ORDERED );
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define( "DB_GETMODE_ASSOC", DB_FETCHMODE_ASSOC );
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define( "DB_GETMODE_FLIPPED", DB_FETCHMODE_FLIPPED );
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define("DB_GETMODE_ORDERED", DB_FETCHMODE_ORDERED);
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define("DB_GETMODE_ASSOC", DB_FETCHMODE_ASSOC);
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define("DB_GETMODE_FLIPPED", DB_FETCHMODE_FLIPPED);
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/**
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/**
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* The main "DB" class is simply a container class with some static
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* methods for creating DB objects as well as some utility functions
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* common to all parts of DB.
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@ -159,8 +156,8 @@
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* @since PHP 4.0
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*/
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class DB
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{
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class DB
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{
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/**
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* Create a new DB object for the specified database type
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*
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@ -170,16 +167,15 @@
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* error
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*/
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function &factory( $type )
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function &factory($type)
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{
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@include_once( "DB/${type}.php" );
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@include_once("DB/${type}.php");
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$classname = "DB_" . $type;
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$obj = @new $classname;
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if( !$obj )
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{
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return new DB_Error( DB_ERROR_NOT_FOUND );
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if (!$obj) {
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return new DB_Error(DB_ERROR_NOT_FOUND);
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}
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return $obj;
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@ -188,8 +184,9 @@
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/**
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* Create a new DB object and connect to the specified database
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*
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* @param $dsn string "data source name", see the DB::parseDSN
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* method for a description of the dsn format.
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* @param $dsn mixed "data source name", see the DB::parseDSN
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* method for a description of the dsn format. Can also be
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* specified as an array of the format returned by DB::parseDSN.
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*
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* @param $persistent bool whether this connection should be
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* persistent. Ignored if the backend extension does not support
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@ -197,26 +194,29 @@
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*
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* @return object a newly created DB object, or a DB error code on
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* error
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*
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* @see DB::parseDSN
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*/
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function &connect( $dsn, $persistent = false )
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function &connect($dsn, $persistent = false)
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{
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$dsninfo = DB::parseDSN( $dsn );
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$type = $dsninfo[ "phptype" ];
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if (is_array($dsn)) {
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$dsninfo = $dsn;
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} else {
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$dsninfo = DB::parseDSN($dsn);
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}
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$type = $dsninfo["phptype"];
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$classname = "DB_" . $type;
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@include_once( "DB/${type}.php" );
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@include_once("DB/${type}.php");
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$obj = @new $classname;
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if( !$obj )
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{
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return new DB_Error( DB_ERROR_NOT_FOUND );
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if (!$obj) {
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return new DB_Error(DB_ERROR_NOT_FOUND);
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}
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$err = $obj->connect( $dsninfo, $persistent );
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$err = $obj->connect($dsninfo, $persistent);
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if( DB::isError( $err ) )
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{
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if (DB::isError($err)) {
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return $err;
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}
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@ -228,7 +228,6 @@
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*
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* @return int the DB API version number
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*/
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function apiVersion()
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{
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return 2;
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@ -241,13 +240,11 @@
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*
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* @return bool whether $value is an error
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*/
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function isError( $value )
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function isError($value)
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{
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return is_object( $value ) &&
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( get_class( $value ) == "db_error" ||
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is_subclass_of( $value, "db_error" )
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);
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return is_object($value) &&
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(get_class($value) == "db_error" ||
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is_subclass_of($value, "db_error"));
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}
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/**
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@ -259,13 +256,11 @@
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*
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* @return bool whether $value is a warning
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*/
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function isWarning( $value )
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function isWarning($value)
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{
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return is_object( $value ) &&
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( get_class( $value ) == "db_warning" ||
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is_subclass_of( $value, "db_warning" )
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);
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return is_object($value) &&
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(get_class( $value ) == "db_warning" ||
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is_subclass_of($value, "db_warning"));
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}
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/**
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@ -276,11 +271,9 @@
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* @return string error message, or false if the error code was
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* not recognized
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*/
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function errorMessage( $value )
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{
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if( !isset( $errorMessages ) )
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function errorMessage($value)
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{
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if (!isset($errorMessages)) {
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$errorMessages = array(
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DB_ERROR => "unknown error",
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DB_ERROR_ALREADY_EXISTS => "already exists",
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@ -308,12 +301,11 @@
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);
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}
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if( DB::isError( $value ) )
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{
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if (DB::isError($value)) {
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$value = $value->code;
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}
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return $errorMessages[ $value ];
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return $errorMessages[$value];
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}
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/**
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@ -322,48 +314,33 @@
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* @param $dsn string Data Source Name to be parsed
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*
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* @return array an associative array with the following keys:
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* <dl>
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* <dt>phptype</dt>
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* <dd>Database backend used in PHP (mysql, odbc etc.)</dd>
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* <dt>dbsyntax</dt>
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* <dd>Database used with regards to SQL syntax etc.</dd>
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* <dt>protocol</dt>
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* <dd>Communication protocol to use (tcp, unix etc.)</dd>
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* <dt>hostspec</dt>
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* <dd>Host specification (hostname[:port])</dd>
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* <dt>database</dt>
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* <dd>Database to use on the DBMS server</dd>
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* <dt>username</dt>
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* <dd>User name for login</dd>
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* <dt>password</dt>
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* <dd>Password for login</dd>
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* </dl>
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* </p>
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*
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* <p>
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* phptype: Database backend used in PHP (mysql, odbc etc.)
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* dbsyntax: Database used with regards to SQL syntax etc.
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* protocol: Communication protocol to use (tcp, unix etc.)
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* hostspec: Host specification (hostname[:port])
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* database: Database to use on the DBMS server
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* username: User name for login
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* password: Password for login
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*
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* The format of the supplied DSN is in its fullest form:
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* <ul>
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* <li>phptype(dbsyntax)://username:password@protocol+hostspec/database</li>
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* </ul>
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*
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* phptype(dbsyntax)://username:password@protocol+hostspec/database
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*
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* Most variations are allowed:
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* <ul>
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* <li>phptype://username:password@protocol+hostspec/database</li>
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* <li>phptype://username:password@hostspec/database</li>
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* <li>phptype://username:password@hostspec</li>
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* <li>phptype://hostspec/database</li>
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* <li>phptype://hostspec</li>
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* <li>phptype(dbsyntax)</li>
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* <li>phptype</li>
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* </ul>
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* </p>
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* phptype://username:password@protocol+hostspec/database</li>
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* phptype://username:password@hostspec/database</li>
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* phptype://username:password@hostspec</li>
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* phptype://hostspec/database</li>
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* phptype://hostspec</li>
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* phptype(dbsyntax)</li>
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* phptype</li>
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*
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* @return bool FALSE is returned on error
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*/
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function parseDSN( $dsn )
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{
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if( is_array( $dsn ) )
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function parseDSN($dsn)
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{
|
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if (is_array($dsn)) {
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return $dsn;
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}
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@ -377,80 +354,193 @@
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"password" => false
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);
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if( preg_match( "|^([^:]+)://|", $dsn, $arr ) )
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{
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if (preg_match("|^([^:]+)://|", $dsn, $arr)) {
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$dbtype = $arr[ 1 ];
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$dsn = preg_replace( "|^[^:]+://|", '', $dsn );
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$dsn = preg_replace( "|^[^:]+://|", '', $dsn);
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// match "phptype(dbsyntax)"
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if( preg_match( "|^([^\(]+)\((.+)\)$|", $dbtype, $arr ) )
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{
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$parsed[ "phptype" ] = $arr[ 1 ];
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$parsed[ "dbsyntax" ] = $arr[ 2 ];
|
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if (preg_match("|^([^\(]+)\((.+)\)$|", $dbtype, $arr)) {
|
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$parsed["phptype"] = $arr[1];
|
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$parsed["dbsyntax"] = $arr[2];
|
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} else {
|
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$parsed["phptype"] = $dbtype;
|
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}
|
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|
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else
|
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{
|
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$parsed[ "phptype" ] = $dbtype;
|
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}
|
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|
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}
|
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|
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else
|
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{
|
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} else {
|
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// match "phptype(dbsyntax)"
|
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if( preg_match( "|^([^\(]+)\((.+)\)$|", $dsn, $arr ) )
|
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{
|
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$parsed[ "phptype" ] = $arr[ 1 ];
|
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$parsed[ "dbsyntax" ] = $arr[ 2 ];
|
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}
|
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|
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else
|
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{
|
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$parsed[ "phptype" ] = $dsn;
|
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if (preg_match("|^([^\(]+)\((.+)\)$|", $dsn, $arr)) {
|
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$parsed["phptype"] = $arr[1];
|
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$parsed["dbsyntax"] = $arr[2];
|
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} else {
|
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$parsed["phptype"] = $dsn;
|
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}
|
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|
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return $parsed;
|
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}
|
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|
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if( preg_match( "|^(.*)/([^/]+)/?$|", $dsn, $arr ) )
|
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{
|
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$parsed[ "database" ] = $arr[ 2 ];
|
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$dsn = $arr[ 1 ];
|
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if (preg_match("|^(.*)/([^/]+)/?$|", $dsn, $arr)) {
|
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$parsed["database"] = $arr[2];
|
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$dsn = $arr[1];
|
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}
|
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|
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if( preg_match( "|^([^:]+):([^@]+)@?(.*)$|", $dsn, $arr ) )
|
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{
|
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$parsed[ "username" ] = $arr[ 1 ];
|
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$parsed[ "password" ] = $arr[ 2 ];
|
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$dsn = $arr[ 3 ];
|
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if (preg_match("|^([^:]+):([^@]+)@?(.*)$|", $dsn, $arr)) {
|
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$parsed["username"] = $arr[1];
|
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$parsed["password"] = $arr[2];
|
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$dsn = $arr[3];
|
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} elseif (preg_match("|^([^:]+)@(.*)$|", $dsn, $arr)) {
|
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$parsed["username"] = $arr[1];
|
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$dsn = $arr[2];
|
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}
|
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|
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elseif( preg_match( "|^([^:]+)@(.*)$|", $dsn, $arr ) )
|
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{
|
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$parsed[ "username" ] = $arr[ 1 ];
|
||||
$dsn = $arr[ 2 ];
|
||||
if (preg_match("|^([^\+]+)\+(.*)$|", $dsn, $arr)) {
|
||||
$parsed["protocol"] = $arr[1];
|
||||
$dsn = $arr[2];
|
||||
}
|
||||
|
||||
if( preg_match( "|^([^\+]+)\+(.*)$|", $dsn, $arr ) )
|
||||
{
|
||||
$parsed[ "protocol" ] = $arr[ 1 ];
|
||||
$dsn = $arr[ 2 ];
|
||||
if (!$parsed["database"]) {
|
||||
$dsn = preg_replace("|/+$|", "", $dsn);
|
||||
}
|
||||
|
||||
if( !$parsed[ "database" ] )
|
||||
{
|
||||
$dsn = preg_replace( "|/+$|", "", $dsn );
|
||||
}
|
||||
$parsed["hostspec"] = urldecode($dsn);
|
||||
|
||||
$parsed[ "hostspec" ] = urldecode( $dsn );
|
||||
|
||||
if( !$parsed[ "dbsyntax"] )
|
||||
{
|
||||
$parsed[ "dbsyntax" ] = $parsed[ "phptype" ];
|
||||
if(!$parsed["dbsyntax"]) {
|
||||
$parsed["dbsyntax"] = $parsed["phptype"];
|
||||
}
|
||||
|
||||
return $parsed;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* DB_Error implements a class for reporting portable database error
|
||||
* messages.
|
||||
*
|
||||
* @author Stig Bakken <ssb@fast.no>
|
||||
*/
|
||||
class DB_Error extends PEAR_Error
|
||||
{
|
||||
/**
|
||||
* DB_Error constructor.
|
||||
*
|
||||
* @param $code mixed DB error code, or string with error message.
|
||||
* @param $mode int what "error mode" to operate in
|
||||
* @param $level what error level to use for $mode & PEAR_ERROR_TRIGGER
|
||||
* @param $debuginfo additional debug info, such as the last query
|
||||
*
|
||||
* @access public
|
||||
*
|
||||
* @see PEAR_Error
|
||||
*/
|
||||
|
||||
function DB_Error($code = DB_ERROR, $mode = PEAR_ERROR_RETURN,
|
||||
$level = E_USER_NOTICE, $debuginfo = null) {
|
||||
if (is_int($code)) {
|
||||
$this->PEAR_Error("DB Error: " . DB::errorMessage( $code ), $code, $mode, $level, $debuginfo);
|
||||
} else {
|
||||
$this->PEAR_Error("DB Error: $code", 0, $mode, $level, $debuginfo);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* DB_Warning implements a class for reporting portable database
|
||||
* warning messages.
|
||||
*
|
||||
* @author Stig Bakken <ssb@fast.no>
|
||||
*/
|
||||
class DB_Warning extends PEAR_Error
|
||||
{
|
||||
/**
|
||||
* DB_Warning constructor.
|
||||
*
|
||||
* @param $code mixed DB error code, or string with error message.
|
||||
* @param $mode int what "error mode" to operate in
|
||||
* @param $level what error level to use for $mode == PEAR_ERROR_TRIGGER
|
||||
* @param $debuginfo additional debug info, such as the last query
|
||||
*
|
||||
* @access public
|
||||
*
|
||||
* @see PEAR_Error
|
||||
*/
|
||||
|
||||
function DB_Warning($code = DB_WARNING, $mode = PEAR_ERROR_RETURN,
|
||||
$level = E_USER_NOTICE, $debuginfo = null) {
|
||||
if (is_int($code)) {
|
||||
$this->PEAR_Error("DB Warning: " . DB::errorMessage( $code ), $code, $mode, $level, $debuginfo);
|
||||
} else {
|
||||
$this->PEAR_Error("DB Warning: $code", 0, $mode, $level, $debuginfo);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* This class implements a wrapper for a DB result set.
|
||||
* A new instance of this class will be returned by the DB implementation
|
||||
* after processing a query that returns data.
|
||||
*
|
||||
* @author Stig Bakken <ssb@fast.no>
|
||||
*/
|
||||
|
||||
class DB_result
|
||||
{
|
||||
var $dbh;
|
||||
var $result;
|
||||
|
||||
/**
|
||||
* DB_result constructor.
|
||||
* @param $dbh DB object reference
|
||||
* @param $result result resource id
|
||||
*/
|
||||
|
||||
function DB_result(&$dbh, $result) {
|
||||
$this->dbh = &$dbh;
|
||||
$this->result = $result;
|
||||
}
|
||||
|
||||
/**
|
||||
* Fetch and return a row of data.
|
||||
* @return array a row of data, or false on error
|
||||
*/
|
||||
function fetchRow($fetchmode = DB_FETCHMODE_DEFAULT) {
|
||||
if ($fetchmode == DB_FETCHMODE_DEFAULT) {
|
||||
$fetchmode = $this->dbh->fetchmode;
|
||||
}
|
||||
return $this->dbh->fetchRow($this->result, $fetchmode);
|
||||
}
|
||||
|
||||
/**
|
||||
* Fetch a row of data into an existing array.
|
||||
*
|
||||
* @param $arr reference to data array
|
||||
* @return int error code
|
||||
*/
|
||||
function fetchInto(&$arr, $fetchmode = DB_FETCHMODE_DEFAULT) {
|
||||
if ($fetchmode == DB_FETCHMODE_DEFAULT) {
|
||||
$fetchmode = $this->dbh->fetchmode;
|
||||
}
|
||||
return $this->dbh->fetchInto($this->result, $arr, $fetchmode);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the the number of columns in a result set.
|
||||
*
|
||||
* @return int the number of columns, or a DB error code
|
||||
*/
|
||||
function numCols() {
|
||||
return $this->dbh->numCols($this->result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Frees the resources allocated for this result set.
|
||||
* @return int error code
|
||||
*/
|
||||
function free() {
|
||||
$err = $this->dbh->freeResult($this->result);
|
||||
if( DB::isError($err)) {
|
||||
return $err;
|
||||
}
|
||||
$this->result = false;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
?>
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue