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<?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 git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key 1 in /in/tTXJf on line 7 -4 Warning: Undefined array key 1 in /in/tTXJf on line 7 -4

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