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run code in 150+ php & hhvm versions
Bugs & Features
<?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 7.0.0 - 7.1.0
int(0) int(0)
Output for hhvm-3.10.0 - 3.12.0
long(0) refcount(1) long(0) refcount(1)
Output for 4.3.0 - 5.6.28
long(0) refcount(3) long(0) refcount(3)