3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public B|C $x; public function __construct(B|C $x) { $this->x = $x; } public function __sleep() { return ['x']; } } class B { public A $a; public function __serialize() { return ['a' => new A($this)]; } } class C { public A $a; private self $instance; public function __serialize() { return ['a' => new A($this)]; } public function __clone() { $this->instance = $this; } } // instantiate $b = new B(); $c = new C(); // clone and assign $ib = clone $b; $ic = clone $c; // serialize $sb = serialize($b); $scb = serialize(clone $b); $sib = serialize($ib); $sc = serialize($c); $scc = serialize(clone $c); $sic = serialize($ic); // unserialize $ub = unserialize($sb); $ucb = unserialize($scb); $uib = unserialize($sib); $uc = unserialize($sc); $ucc = unserialize($scc); $uic = unserialize($sic); // expected behavior is b == b->a->x printf("original ids: b:%s, b->a:%s, b->a->x:%s \n", spl_object_id($ub), spl_object_id($ub->a), spl_object_id($ub->a->x)); printf("cloned ids: b:%s, b->a:%s, b->a->x:%s \n", spl_object_id($ucb), spl_object_id($ucb->a), spl_object_id($ucb->a->x)); printf("cloned & assigned ids: b:%s, b->a:%s, b->a->x:%s \n", spl_object_id($uib), spl_object_id($uib->a), spl_object_id($uib->a->x)); printf(PHP_EOL); // expected behavior is c == c->a->x printf("original ids: c:%s, c->a:%s, c->a->x:%s \n", spl_object_id($uc), spl_object_id($uc->a), spl_object_id($uc->a->x)); printf("cloned ids: c:%s, c->a:%s, c->a->x:%s \n", spl_object_id($ucc), spl_object_id($ucc->a), spl_object_id($ucc->a->x)); printf("cloned & assigned ids: c:%s, c->a:%s, c->a->x:%s \n", spl_object_id($uic), spl_object_id($uic->a), spl_object_id($uic->a->x)); printf(PHP_EOL); printf("serialized original: %s\n", $sb); printf("serialized clone : %s\n", $scb);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.4.130.0050.00419.15
8.4.120.0060.00420.46
8.4.110.0130.00820.58
8.4.100.0100.01018.88
8.4.90.0100.00720.59
8.4.80.0090.01118.88
8.4.70.0120.00618.73
8.4.60.0120.01019.03
8.4.50.0120.00820.41
8.4.40.0090.00617.59
8.4.30.0080.01118.75
8.4.20.0120.00619.83
8.4.10.0030.00619.25
8.3.260.0080.00916.57
8.3.250.0130.00617.41
8.3.240.0120.00816.75
8.3.230.0120.00716.86
8.3.220.0100.00818.95
8.3.210.0050.00816.24
8.3.200.0050.00416.53
8.3.190.0090.01117.02
8.3.180.0100.01016.64
8.3.170.0040.00417.08
8.3.160.0090.00918.45
8.3.150.0110.00720.49
8.3.140.0050.00316.61
8.3.130.0000.00818.34
8.3.120.0120.00018.70
8.3.110.0090.00320.94
8.3.100.0030.00616.62
8.3.90.0030.00526.77
8.3.80.0060.00317.97
8.3.70.0000.01518.40
8.3.60.0060.01016.75
8.3.50.0130.00716.47
8.3.40.0070.01323.73
8.3.30.0120.00319.01
8.3.20.0080.00024.18
8.3.10.0070.00024.66
8.3.00.0050.00226.16
8.2.290.0080.01020.20
8.2.280.0060.00718.62
8.2.270.0070.01117.54
8.2.260.0130.00617.24
8.2.250.0040.00417.50
8.2.240.0030.00618.73
8.2.230.0060.00322.58
8.2.220.0030.00724.06
8.2.210.0030.00726.77
8.2.200.0060.00316.75
8.2.190.0090.00618.16
8.2.180.0200.00018.54
8.2.170.0140.00718.81
8.2.160.0070.00722.96
8.2.150.0040.00425.66
8.2.140.0030.00624.66
8.2.130.0050.00326.16
8.2.120.0050.00320.96
8.2.110.0070.00320.73
8.2.100.0140.00618.52
8.2.90.0120.00518.56
8.2.80.0160.00218.50
8.2.70.0120.00718.48
8.2.60.0110.00818.72
8.2.50.0130.00618.52
8.2.40.0130.00418.54
8.2.30.0130.00518.52
8.2.20.0110.00618.52
8.2.10.0150.00318.46
8.2.00.0110.00518.54
8.1.330.0120.00722.01
8.1.320.0110.00818.01
8.1.310.0060.00816.48
8.1.300.0130.00715.97
8.1.290.0030.00630.84
8.1.280.0060.00925.92
8.1.270.0080.00024.66
8.1.260.0030.00626.35
8.1.250.0000.00828.09
8.1.240.0050.00620.31
8.1.230.0120.00518.62
8.1.220.0110.00518.50
8.1.210.0110.00618.91
8.1.200.0130.00418.47
8.1.190.0110.00718.42
8.1.180.0150.00318.43
8.1.170.0120.00618.56
8.1.160.0110.00518.52
8.1.150.0140.00418.47
8.1.140.0120.00418.43
8.1.130.0110.00718.44
8.1.120.0130.00518.61
8.1.110.0080.00918.48
8.1.100.0100.00618.44
8.1.90.0150.00318.47
8.1.80.0120.00518.64
8.1.70.0100.00718.42
8.1.60.0100.00918.50
8.1.50.0090.00718.66
8.1.40.0120.00518.51
8.1.30.0090.00718.76
8.1.20.0150.00318.50
8.1.10.0140.00218.47
8.1.00.0110.00518.52
8.0.300.0130.00318.34
8.0.290.0130.00518.77
8.0.280.0130.00418.29
8.0.270.0110.00618.32
8.0.260.0170.00318.29
8.0.250.0120.00818.31
8.0.240.0160.00618.34
8.0.230.0170.00318.31
8.0.220.0110.00718.32
8.0.210.0140.00518.31
8.0.200.0160.00318.32
8.0.190.0150.00418.31
8.0.180.0160.00618.35
8.0.170.0200.00318.30
8.0.160.0180.00318.79
8.0.150.0150.00318.29
8.0.140.0150.00518.30
8.0.130.0150.00318.28
8.0.120.0170.00318.28
8.0.110.0180.00318.33
8.0.100.0150.00618.27
8.0.90.0130.00818.29
8.0.80.0190.00118.29
8.0.70.0170.00518.30
8.0.60.0140.00818.30
8.0.50.0190.00218.28
8.0.30.0200.00218.30
8.0.20.0190.00218.37
8.0.10.0140.00618.31

preferences:
72.5 ms | 403 KiB | 5 Q