<?php
function countRefs($var) {
ob_start();
debug_zval_dump($var);
preg_match('~refcount\((\d+)\)~', ob_get_clean(), $matches);
return $matches[1] - 4;
}
$a = 0;
$a = &$a;
echo countRefs($a);
$a = &$a;
echo countRefs($a);
- Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- Warning: Undefined array key 1 in /in/tTXJf on line 7
-4
Warning: Undefined array key 1 in /in/tTXJf on line 7
-4
- Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
- Notice: Undefined offset: 1 in /in/tTXJf on line 7
-4
Notice: Undefined offset: 1 in /in/tTXJf on line 7
-4
- Output for 7.3.32 - 7.3.33
- -4-4
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
- -1-1
preferences:
287.93 ms | 403 KiB | 460 Q