diff --git a/sapi/cli/php_cli_server.c b/sapi/cli/php_cli_server.c
index 143d433d54c..f46b5763faf 100644
--- a/sapi/cli/php_cli_server.c
+++ b/sapi/cli/php_cli_server.c
@@ -588,6 +588,11 @@ static void sapi_cli_server_register_variable(zval *track_vars_array, const char
 {
 	char *new_val = (char *)val;
 	size_t new_val_len;
+
+	if (NULL == val) {
+		return;
+	}
+
 	if (sapi_module.input_filter(PARSE_SERVER, (char*)key, &new_val, strlen(val), &new_val_len)) {
 		php_register_variable_safe((char *)key, new_val, new_val_len, track_vars_array);
 	}
diff --git a/sapi/cli/tests/bug61977.phpt b/sapi/cli/tests/bug61977.phpt
index 6250c9aec04..218641a5116 100644
--- a/sapi/cli/tests/bug61977.phpt
+++ b/sapi/cli/tests/bug61977.phpt
@@ -7,7 +7,7 @@ include "skipif.inc";
 --FILE--
 <?php
 include "php_cli_server.inc";
-php_cli_server_start('<?php ?>', true);
+php_cli_server_start('<?php ?>', null);
 
 /*
  * If a Mime Type is added in php_cli_server.c, add it to this array and update
diff --git a/sapi/cli/tests/bug68745.phpt b/sapi/cli/tests/bug68745.phpt
new file mode 100644
index 00000000000..733d7d09006
--- /dev/null
+++ b/sapi/cli/tests/bug68745.phpt
@@ -0,0 +1,34 @@
+--TEST--
+Bug #68745 (Invalid HTTP requests make web server segfault)
+--SKIPIF--
+<?php
+include "skipif.inc";
+?>
+--FILE--
+<?php
+include "php_cli_server.inc";
+php_cli_server_start('var_dump(count($_SERVER));', 'not-index.php');
+
+list($host, $port) = explode(':', PHP_CLI_SERVER_ADDRESS);
+$port = intval($port)?:80;
+
+$fp = fsockopen($host, $port, $errno, $errstr, 0.5);
+if (!$fp) {
+  die("connect failed");
+}
+
+if(fwrite($fp, "GET www.example.com:80 HTTP/1.1\r\n\r\n")) {
+    while (!feof($fp)) {
+        echo fgets($fp);
+    }
+}
+
+fclose($fp);
+?>
+--EXPECTF--
+HTTP/1.1 200 OK
+Connection: close
+X-Powered-By: %s
+Content-type: text/html; charset=UTF-8
+
+int(%d)
diff --git a/sapi/cli/tests/php_cli_server.inc b/sapi/cli/tests/php_cli_server.inc
index 77a79e0f049..6b1e90c4dc1 100644
--- a/sapi/cli/tests/php_cli_server.inc
+++ b/sapi/cli/tests/php_cli_server.inc
@@ -3,13 +3,12 @@ define ("PHP_CLI_SERVER_HOSTNAME", "localhost");
 define ("PHP_CLI_SERVER_PORT", 8964);
 define ("PHP_CLI_SERVER_ADDRESS", PHP_CLI_SERVER_HOSTNAME.":".PHP_CLI_SERVER_PORT);
 
-function php_cli_server_start($code = 'echo "Hello world";', $no_router = FALSE, $cmd_args = null) {
+function php_cli_server_start($code = 'echo "Hello world";', $router = 'index.php', $cmd_args = null) {
 	$php_executable = getenv('TEST_PHP_EXECUTABLE');
 	$doc_root = __DIR__;
-	$router = "index.php";
 
 	if ($code) {
-		file_put_contents($doc_root . '/' . $router, '<?php ' . $code . ' ?>');
+		file_put_contents($doc_root . '/' . ($router ?: 'index.php'), '<?php ' . $code . ' ?>');
 	}
 
 	$descriptorspec = array(
@@ -20,14 +19,14 @@ function php_cli_server_start($code = 'echo "Hello world";', $no_router = FALSE,
 
 	if (substr(PHP_OS, 0, 3) == 'WIN') {
 		$cmd = "{$php_executable} -t {$doc_root} -n {$cmd_args} -S " . PHP_CLI_SERVER_ADDRESS;
-		if (!$no_router) {
+		if (!is_null($router)) {
 			$cmd .= " {$router}";
 		}
 
 		$handle = proc_open(addslashes($cmd), $descriptorspec, $pipes, $doc_root, NULL, array("bypass_shell" => true,  "suppress_errors" => true));
 	} else {
 		$cmd = "exec {$php_executable} -t {$doc_root} -n {$cmd_args} -S " . PHP_CLI_SERVER_ADDRESS;
-		if (!$no_router) {
+		if (!is_null($router)) {
 			$cmd .= " {$router}";
 		}
 		$cmd .= " 2>/dev/null";
diff --git a/sapi/cli/tests/php_cli_server_009.phpt b/sapi/cli/tests/php_cli_server_009.phpt
index 231797160f2..7f3009b9bdc 100644
--- a/sapi/cli/tests/php_cli_server_009.phpt
+++ b/sapi/cli/tests/php_cli_server_009.phpt
@@ -10,7 +10,7 @@ include "skipif.inc";
 --FILE--
 <?php
 include "php_cli_server.inc";
-php_cli_server_start('var_dump($_SERVER["PATH_INFO"]);', TRUE);
+php_cli_server_start('var_dump($_SERVER["PATH_INFO"]);', null);
 
 list($host, $port) = explode(':', PHP_CLI_SERVER_ADDRESS);
 $port = intval($port)?:80;
diff --git a/sapi/cli/tests/php_cli_server_010.phpt b/sapi/cli/tests/php_cli_server_010.phpt
index 30e6d047a71..ce3abeb5013 100644
--- a/sapi/cli/tests/php_cli_server_010.phpt
+++ b/sapi/cli/tests/php_cli_server_010.phpt
@@ -7,7 +7,7 @@ include "skipif.inc";
 --FILE--
 <?php
 include "php_cli_server.inc";
-php_cli_server_start('var_dump($_SERVER["PHP_SELF"], $_SERVER["SCRIPT_NAME"], $_SERVER["PATH_INFO"], $_SERVER["QUERY_STRING"]);', TRUE);
+php_cli_server_start('var_dump($_SERVER["PHP_SELF"], $_SERVER["SCRIPT_NAME"], $_SERVER["PATH_INFO"], $_SERVER["QUERY_STRING"]);', null);
 
 list($host, $port) = explode(':', PHP_CLI_SERVER_ADDRESS);
 $port = intval($port)?:80;
diff --git a/sapi/cli/tests/php_cli_server_013.phpt b/sapi/cli/tests/php_cli_server_013.phpt
index 0e3f4ff74f5..3ea3ea9cadb 100644
--- a/sapi/cli/tests/php_cli_server_013.phpt
+++ b/sapi/cli/tests/php_cli_server_013.phpt
@@ -7,7 +7,7 @@ include "skipif.inc";
 --FILE--
 <?php
 include "php_cli_server.inc";
-php_cli_server_start(NULL, TRUE);
+php_cli_server_start(NULL, NULL);
 
 list($host, $port) = explode(':', PHP_CLI_SERVER_ADDRESS);
 $port = intval($port)?:80;
diff --git a/sapi/cli/tests/php_cli_server_014.phpt b/sapi/cli/tests/php_cli_server_014.phpt
index e8bb5fa8a2f..4f812e2f635 100644
--- a/sapi/cli/tests/php_cli_server_014.phpt
+++ b/sapi/cli/tests/php_cli_server_014.phpt
@@ -7,7 +7,7 @@ include "skipif.inc";
 --FILE--
 <?php
 include "php_cli_server.inc";
-php_cli_server_start('echo done, "\n";', TRUE);
+php_cli_server_start('echo done, "\n";', null);
 
 list($host, $port) = explode(':', PHP_CLI_SERVER_ADDRESS);
 $port = intval($port)?:80;