3v4l.org

run code in 300+ PHP versions simultaneously
<?php class X { public $r; public $r2; public function __destruct() { $this->r2 = null; } } function getCircle() { $a = new X(); $b = new X(); $c = new X(); $a->r = $c; $b->r = $a; $c->r = $b; return $a; } $zeroMemory = memory_get_usage(); $u = getCircle(); $u->r2 = getCircle(); $u = null; gc_collect_cycles(); var_dump(memory_get_usage()- $zeroMemory); gc_collect_cycles(); var_dump(memory_get_usage()- $zeroMemory);

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)
8.2.80.0050.00317.97
8.2.70.0160.00017.97
8.2.60.0110.00617.97
8.2.50.0160.00017.97
8.2.40.0110.00417.97
8.2.30.0060.01117.97
8.2.20.0110.00517.75
8.2.10.0100.00517.82
8.2.00.0090.00417.81
8.1.210.0090.00917.97
8.1.200.0150.00317.97
8.1.190.0070.01017.97
8.1.180.0170.00017.97
8.1.170.0080.00817.97
8.1.160.0100.00717.97
8.1.150.0100.00617.67
8.1.140.0090.00417.64
8.1.130.0120.00217.70
8.1.120.0070.00717.73
8.1.110.0070.00717.66
8.1.100.0090.00817.65
8.1.90.0120.00417.72
8.1.80.0070.01117.72
8.1.70.0110.00617.74
8.1.60.0170.00317.81
8.1.50.0180.00417.78
8.1.40.0150.00417.83
8.1.30.0170.00217.79
8.1.20.0140.00617.81
8.1.10.0050.01217.70
8.1.00.0110.00417.72
8.0.290.0130.00417.97
8.0.280.0100.00817.97
8.0.270.0090.00417.35
8.0.260.0090.00617.31
8.0.250.0100.00317.37
8.0.240.0060.00717.42
8.0.230.0070.00817.39
8.0.220.0080.00717.29
8.0.210.0120.00317.28
8.0.200.0050.00817.35
8.0.190.0130.00417.31
8.0.180.0110.00517.40
8.0.170.0140.00217.39
8.0.160.0070.00917.39
8.0.150.0140.00317.32
8.0.140.0120.00517.34
8.0.130.0140.00317.30
8.0.120.0110.00117.34
8.0.110.0080.00417.34
8.0.100.0080.00517.34
8.0.90.0090.00417.40
8.0.80.0080.00717.36
8.0.70.0090.00517.30
8.0.60.0080.00417.32
8.0.50.0070.00717.33
8.0.30.0130.00917.00
8.0.20.0180.00917.03
8.0.10.0180.00817.09
8.0.00.0200.00617.11
7.4.330.0090.00517.20
7.4.320.0170.00017.20
7.4.300.0150.00117.20
7.4.290.0130.00517.20
7.4.280.0110.00517.24
7.4.270.0110.00517.25
7.4.260.0080.00817.21
7.4.250.0120.00517.26
7.4.240.0130.00417.23
7.4.230.0150.00217.20
7.4.220.0140.00317.22
7.4.210.0120.00417.20
7.4.200.0110.00517.20
7.4.190.0100.00617.22
7.4.180.0110.00417.20
7.4.160.0130.00916.78
7.4.150.0160.00816.72
7.4.140.0200.00416.73
7.4.130.0190.00616.73
7.4.120.0140.00916.70
7.4.110.0190.00616.69
7.4.100.0120.01116.73
7.4.90.0190.00616.74
7.4.80.0200.00516.69
7.4.70.0170.00716.67
7.4.60.0180.00716.63
7.4.50.0190.00616.61
7.4.40.0190.00616.63
7.4.30.0140.00916.67
7.4.20.0160.00916.69
7.4.10.0210.00416.69
7.4.00.0110.00816.72
7.3.330.0080.00516.82
7.3.320.0100.00517.20
7.3.310.0100.00517.20
7.3.300.0090.00617.20
7.3.290.0100.00517.20
7.3.280.0190.00616.61
7.3.270.0150.00716.60
7.3.260.0170.00916.61
7.3.250.0150.00916.64
7.3.240.0180.00616.64
7.3.230.0160.00816.63
7.3.220.0160.01116.63
7.3.210.0210.00716.61
7.3.200.0160.00916.63
7.3.190.0190.00616.64
7.3.180.0190.00716.63
7.3.170.0220.00416.63
7.3.160.0160.00916.63
7.3.150.0150.01016.61
7.3.140.0190.00616.61
7.3.130.0170.00716.64
7.3.120.0200.00416.59
7.3.110.0150.00716.52
7.3.100.0130.00716.55
7.3.90.0140.00816.75
7.3.80.0160.00616.58
7.3.70.0160.00816.64
7.3.60.0180.00616.67
7.3.50.0140.00816.70
7.3.40.0180.00416.69
7.3.30.0150.00616.67
7.3.20.0210.00616.68
7.3.10.0150.00916.66
7.3.00.0180.00716.66

preferences:
28.76 ms | 403 KiB | 5 Q