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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; } $a = 0; echo countRefs($a); $a = &$a; echo countRefs($a); $a = &$a; echo countRefs($a);
Output for 7.0.0 - 7.0.31, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(0) int(0) int(0)
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 - 5.6.38
long(0) refcount(4) long(0) refcount(3) long(0) refcount(3)
preferences:
287.98 ms | 403 KiB | 417 Q