From 4762d46427fc5b654ee4c99ff4c3b104ab01edf2 Mon Sep 17 00:00:00 2001
From: Niels Dossche <7771979+nielsdos@users.noreply.github.com>
Date: Sun, 20 Jul 2025 15:55:59 +0200
Subject: [PATCH] Avoid modulo operation in loop in array_chunk

For this benchmark:
```php
$length = 25;
for ($i=0;$i<1000;$i++)
  array_chunk(range(0, 10000), $length);
```

On an i7-4790, length=25 speeds up by 1.8x and length=1 by 1.27x.
On an i7-1185G7, length=25 speeds up by 1.08x and length=1 by 1.02x.
---
 ext/standard/array.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ext/standard/array.c b/ext/standard/array.c
index 522e7f715ac..6de78c3900a 100644
--- a/ext/standard/array.c
+++ b/ext/standard/array.c
@@ -7046,9 +7046,10 @@ PHP_FUNCTION(array_chunk)
 
 		/* If reached the chunk size, add it to the result array, and reset the
 		 * pointer. */
-		if (!(++current % size)) {
+		if (++current == size) {
 			add_next_index_zval(return_value, &chunk);
 			ZVAL_UNDEF(&chunk);
+			current = 0;
 		}
 	} ZEND_HASH_FOREACH_END();