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<?php if (defined('HHVM_VERSION')) { exit; } function refcount($var) { ob_start(); debug_zval_dump($var); $dump = ob_get_clean(); $matches = array(); preg_match('/refcount\(([0-9]+)/', $dump, $matches); $count = $matches[1]; //3 references are added, including when calling debug_zval_dump() return $count - 3; } $array = array('foo' => 'bar'); var_dump(refcount($array)); $copy = $array; var_dump(refcount($array)); var_dump(refcount($copy)); current($copy); var_dump(refcount($array)); var_dump(refcount($copy));
Output for git.master, git.master_jit, rfc.property-hooks
int(1) int(2) int(2) int(2) int(2)

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