3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = new \WeakMap(); $a = new \stdClass(); $b = new \stdClass(); $s[$a] ??= []; $v = &$s[$a]; $v[1] = ['foo' => 'bar']; var_dump($v); var_dump($s[$a]); $d = &$s[$a][1]; $d['bar'] = 'baz'; var_dump($d); var_dump($s[$a]); $s[$b] ??= []; $s[$b][2] = 2; var_dump($s[$b]); var_dump($s); unset($a); var_dump($s);

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)
8.4.130.0120.00717.82
8.4.120.0160.00420.49
8.4.110.0120.00818.74
8.4.100.0140.00717.85
8.4.90.0140.00820.38
8.4.80.0060.00318.82
8.4.70.0080.00617.82
8.4.60.0170.00518.86
8.4.50.0100.00618.62
8.4.40.0060.00317.94
8.4.30.0030.00618.69
8.4.20.0470.00317.39
8.4.10.0410.00717.36
8.3.260.0120.00716.39
8.3.250.0040.00618.84
8.3.240.0100.01016.75
8.3.230.0130.00716.52
8.3.220.0120.00418.69
8.3.210.0120.00816.75
8.3.200.0050.00416.57
8.3.190.0050.00317.00
8.3.180.0050.00517.00
8.3.170.0050.00317.02
8.3.160.0120.00618.52
8.3.150.0350.00616.44
8.3.140.0330.00916.49
8.3.130.0350.00716.75
8.3.120.0320.00916.44
8.3.110.0380.00316.48
8.3.100.0400.00816.33
8.3.90.0240.01516.82
8.3.80.0400.00716.17
8.3.70.0320.00916.40
8.3.60.0340.00916.57
8.3.50.0410.01016.27
8.3.40.0240.00317.36
8.3.30.0110.00517.66
8.3.20.0240.00017.52
8.3.10.0270.00717.64
8.3.00.0150.01119.47
8.2.290.0090.00216.64
8.2.280.0150.00618.78
8.2.270.0230.00816.51
8.2.260.0390.00016.28
8.2.250.0320.00616.57
8.2.240.0290.01016.35
8.2.230.0320.00716.35
8.2.220.0510.00716.32
8.2.210.0340.00716.08
8.2.200.0290.00716.33
8.2.190.0310.00916.74
8.2.180.0300.01016.44
8.2.170.0430.00017.46
8.2.160.0280.01417.41
8.2.150.0370.00017.70
8.2.140.0280.00617.62
8.2.130.0350.00617.30
8.2.120.0370.00317.21
8.2.110.0370.00317.39
8.2.100.0330.00517.32
8.2.90.0320.00617.43
8.2.80.0400.00317.39
8.2.70.0300.00917.41
8.2.60.0270.01317.21
8.2.50.0380.00317.07
8.2.40.0270.01017.63
8.2.30.0270.01017.45
8.2.20.0320.00417.52
8.2.10.0300.00717.28
8.2.00.0360.00017.55
8.1.320.0130.00715.89

preferences:
27.04 ms | 403 KiB | 5 Q