3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; $a[] = $a; echo "\na: ".serialize($a); $b = []; $b[] =& $b; echo "\nb: ".serialize($b); $c = new stdClass(); $c->c = $c; echo "\nc: ".serialize($c); $d = new stdClass(); $d->c =& $d; echo "\nd: ".serialize($d); $e = new stdClass(); $e->e = clone $e; echo "\ne: ".serialize($e);

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)
8.3.70.0110.00418.30
8.3.60.0180.00418.32
8.3.50.0060.00918.19
8.3.40.0120.00318.70
8.3.30.0090.00918.84
8.3.20.0070.00020.16
8.3.10.0080.00021.75
8.3.00.0040.00423.66
8.2.180.0150.00618.41
8.2.170.0000.01522.96
8.2.160.0070.01020.37
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00420.96
8.2.110.0070.00320.93
8.2.100.0060.01017.91
8.2.90.0060.00317.75
8.2.80.0050.00318.78
8.2.70.0040.00417.59
8.2.60.0030.00617.63
8.2.50.0080.00018.22
8.2.40.0040.00420.37
8.2.30.0000.00719.32
8.2.20.0030.00518.05
8.2.10.0030.00518.06
8.2.00.0050.00518.04
8.1.280.0030.01425.92
8.1.270.0050.00222.19
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0040.00423.83
8.1.230.0040.00717.77
8.1.220.0030.00617.89
8.1.210.0040.00418.77
8.1.200.0030.00517.00
8.1.190.0050.00317.23
8.1.180.0050.00318.10
8.1.170.0040.00418.58
8.1.160.0030.00618.84
8.1.150.0000.00720.60
8.1.140.0070.00019.15
8.1.130.0070.00018.88
8.1.120.0040.00417.32
8.1.110.0040.00417.42
8.1.100.0040.00417.31
8.1.90.0030.00617.42
8.1.80.0040.00417.42
8.1.70.0000.00817.36
8.1.60.0040.00417.51
8.1.50.0040.00417.42
8.1.40.0060.00317.58
8.1.30.0100.00217.57
8.1.20.0000.00817.70
8.1.10.0040.00417.48
8.1.00.0030.00617.40
8.0.300.0040.00418.77
8.0.290.0080.00016.75
8.0.280.0000.00718.37
8.0.270.0070.00017.20
8.0.260.0040.00416.81
8.0.250.0000.00816.93
8.0.240.0070.00016.96
8.0.230.0000.00816.98
8.0.220.0030.00316.73
8.0.210.0070.00016.81
8.0.200.0000.00716.84
8.0.190.0030.00617.00
8.0.180.0040.00416.95
8.0.170.0040.00416.87
8.0.160.0040.00416.98
8.0.150.0030.00516.77
8.0.140.0100.00016.88
8.0.130.0030.00313.32
8.0.120.0040.00416.83
8.0.110.0030.00416.71
8.0.100.0030.00316.85
8.0.90.0040.00416.82
8.0.80.0090.00616.77
8.0.70.0030.00616.71
8.0.60.0040.00416.75
8.0.50.0040.00416.73
8.0.30.0080.01117.10
8.0.20.0070.01117.40
8.0.10.0000.00816.77
8.0.00.0050.01316.59
7.4.330.0060.00015.55
7.4.320.0030.00316.57
7.4.300.0030.00516.42
7.4.290.0030.00316.54
7.4.280.0000.00716.54
7.4.270.0030.00316.47
7.4.260.0080.00316.46
7.4.250.0030.00316.45
7.4.240.0000.00716.46
7.4.230.0070.00016.53
7.4.220.0060.01216.61
7.4.210.0080.00616.60
7.4.200.0080.00016.33
7.4.160.0120.00616.41
7.4.150.0090.00917.40
7.4.140.0110.01017.86
7.4.130.0110.00516.42
7.4.120.0130.00616.48
7.4.110.0130.01016.57
7.4.100.0060.01216.36
7.4.90.0150.00416.52
7.4.80.0090.00919.39
7.4.70.0170.00716.52
7.4.60.0040.01216.44
7.4.50.0070.00216.53
7.4.40.0100.01416.32
7.4.30.0160.00016.40
7.4.00.0060.01014.72
7.3.330.0000.00513.26
7.3.320.0060.00013.17
7.3.310.0000.00716.16
7.3.300.0030.00316.23
7.3.290.0060.00916.29
7.3.280.0050.01616.34
7.3.270.0060.01217.40
7.3.260.0080.01216.29
7.3.250.0140.00716.37
7.3.240.0120.00616.44
7.3.230.0060.01216.42
7.3.210.0090.00916.35
7.3.200.0090.00816.27
7.3.190.0040.01216.50
7.3.180.0120.00316.46
7.3.170.0060.01016.37
7.3.160.0080.00816.35
7.3.120.0030.00916.90
7.3.110.0090.00616.90
7.3.100.0060.00916.90
7.3.90.0060.00916.90
7.3.80.0030.01316.90
7.3.70.0040.00816.90
7.3.60.0040.01116.90
7.3.50.0030.00716.90
7.3.40.0110.00416.90
7.3.30.0110.00316.90
7.3.20.0100.00716.90
7.3.10.0100.00716.90
7.3.00.0040.00716.90
7.2.330.0070.01116.76
7.2.320.0070.01016.38
7.2.310.0040.01516.41
7.2.300.0130.00816.39
7.2.290.0100.01416.86
7.2.240.0070.00716.90
7.2.230.0060.00616.90
7.2.220.0060.00616.90
7.2.210.0070.00316.90
7.2.200.0060.01016.90
7.2.190.0000.01116.90
7.2.180.0080.00416.90
7.2.170.0080.00616.90
7.2.160.0070.01016.90
7.2.150.0090.00617.08
7.2.140.0070.01017.08
7.2.130.0070.01116.90
7.2.120.0060.00616.90
7.2.110.0080.00616.90
7.2.100.0060.00916.90
7.2.90.0110.00316.90
7.2.80.0070.00516.90
7.2.70.0060.01016.90
7.2.60.0080.00816.81
7.2.50.0090.00616.95
7.2.40.0060.00616.98
7.2.30.0030.01416.90
7.2.20.0040.00816.94
7.2.10.0030.01117.01
7.2.00.0080.01017.21
7.1.330.0060.00616.90
7.1.320.0100.00716.90
7.1.310.0000.01716.90
7.1.300.0060.01016.90
7.1.290.0040.00416.90
7.1.280.0070.00316.90
7.1.270.0000.01116.90
7.1.260.0100.00716.90
7.1.250.0030.01416.90
7.1.200.0040.00415.84
7.1.120.0140.00716.93
7.1.110.0100.00716.38
7.1.100.0110.00716.22
7.1.90.0100.00616.21
7.1.80.0130.00316.33
7.1.70.0060.00915.32
7.1.60.0230.00633.35
7.1.50.0250.00933.00
7.1.40.0240.00632.58
7.1.30.0250.00732.47
7.1.20.0100.01932.78
7.1.10.0070.01014.71
7.1.00.0120.00814.93

preferences:
51.59 ms | 400 KiB | 5 Q