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);

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)
8.2.20.0130.00417.50
8.2.10.0140.00217.69
8.2.00.0080.00817.75
8.1.150.0080.00817.40
8.1.140.0000.01517.39
8.1.130.0110.00417.47
8.1.120.0070.00717.51
8.1.110.0100.00517.38
8.1.100.0150.00017.46
8.1.90.0120.00317.47
8.1.80.0130.00317.46
8.1.70.0100.00717.34
8.1.60.0130.00317.59
8.1.50.0060.00619.26
8.1.40.0050.00519.40
8.1.30.0060.00619.29
8.1.20.0060.00619.39
8.1.10.0070.00217.51
8.1.00.0130.00517.47
8.0.270.0070.00716.68
8.0.260.0040.00716.76
8.0.250.0100.00516.70
8.0.240.0100.00516.74
8.0.230.0060.00316.76
8.0.220.0050.00416.63
8.0.210.0030.00516.67
8.0.200.0100.00016.82
8.0.190.0090.00016.77
8.0.180.0030.00716.79
8.0.170.0070.00216.87
8.0.160.0070.00416.81
8.0.150.0050.00516.72
8.0.140.0050.00516.66
8.0.130.0040.00816.75
8.0.120.0080.00416.68
8.0.110.0020.00616.77
8.0.100.0040.00416.74
8.0.90.0030.00516.76
8.0.80.0040.00516.79
8.0.70.0010.00816.75
8.0.60.0050.00316.85
8.0.50.0030.00516.71
8.0.30.0060.00716.80
8.0.20.0040.00916.80
8.0.10.0060.00716.93
8.0.00.0070.00816.92
7.4.330.0080.00416.43
7.4.320.0170.00016.45
7.4.300.0160.00016.48
7.4.290.0090.00616.43
7.4.280.0120.00416.43
7.4.270.0060.01016.59
7.4.260.0050.01116.50
7.4.250.0050.01116.49
7.4.240.0050.00516.49
7.4.230.0030.00716.54
7.4.220.0040.00516.55
7.4.210.0040.00516.45
7.4.200.0050.00416.49
7.4.190.0060.00416.52
7.4.180.0060.00416.51
7.4.160.0070.00616.54
7.4.150.0050.00916.51
7.4.140.0070.00816.46
7.4.130.0060.00816.35
7.4.120.0060.00816.43
7.4.110.0080.00516.34
7.4.100.0090.00516.51
7.4.90.0050.00916.47
7.4.80.0060.00716.41
7.4.70.0060.00616.44
7.4.60.0070.00516.43
7.4.50.0080.00416.30
7.4.40.0030.00916.39
7.4.30.0080.00516.44
7.4.20.0090.00516.39
7.4.10.0080.00716.44
7.4.00.0060.00816.46
7.3.330.0120.00216.43
7.3.320.0080.00616.43
7.3.310.0030.00616.33
7.3.300.0060.00316.29
7.3.290.0060.00416.29
7.3.280.0050.00916.28
7.3.270.0070.00616.31
7.3.260.0090.00616.29
7.3.250.0070.00716.32
7.3.240.0060.00716.32
7.3.230.0070.00616.28
7.3.220.0060.00716.31
7.3.210.0060.00716.29
7.3.200.0050.00716.29
7.3.190.0060.00616.28
7.3.180.0070.00616.32
7.3.170.0060.00716.33
7.3.160.0050.00716.32
7.3.150.0080.00516.32
7.3.140.0080.00616.28
7.3.130.0090.00516.31
7.3.120.0060.00716.29
7.3.110.0070.00516.20
7.3.100.0050.00716.23
7.3.90.0080.00516.46
7.3.80.0060.00716.26
7.3.70.0100.00416.34
7.3.60.0080.00416.42
7.3.50.0070.00616.41
7.3.40.0060.00716.37
7.3.30.0090.00616.38
7.3.20.0080.00917.30
7.3.10.0140.00617.23
7.3.00.0100.00717.20

preferences:
43.26 ms | 400 KiB | 5 Q