3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [1="a",3=>'b']; echo json_encode($arr); ?>

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)
5.6.80.0000.04020.50
5.5.240.0000.07320.26
5.4.400.0200.05018.54
5.4.390.0170.05318.76
5.4.380.0230.05318.58
5.4.370.0170.05318.75
5.4.360.0130.05718.76
5.4.350.0130.06018.50
5.4.340.0270.04718.76
5.4.320.0200.05318.59
5.4.310.0200.05318.50
5.4.300.0130.06018.79
5.4.290.0130.05718.65
5.4.280.0300.04318.73
5.4.270.0300.04318.73
5.4.260.0300.04018.75
5.4.250.0070.06318.59
5.4.240.0170.05718.39
5.4.230.0300.04018.70
5.4.220.0300.04718.61
5.4.210.0200.05018.48
5.4.200.0270.04016.66
5.4.190.0200.05718.72
5.4.180.0200.05018.75
5.4.170.0370.06018.57
5.4.160.0270.06318.78
5.4.150.0200.05018.71
5.4.140.0170.05316.28
5.4.130.0270.05016.35
5.4.120.0130.05716.26
5.4.110.0100.05716.46
5.4.100.0200.05316.23
5.4.90.0200.05316.17
5.4.80.0200.04716.36
5.4.70.0230.04716.19
5.4.60.0270.04316.21
5.4.50.0230.04316.21
5.4.40.0200.05016.16
5.4.30.0270.05316.16
5.4.20.0300.04016.19
5.4.10.0100.05716.18
5.4.00.0270.04015.65
5.3.290.0130.05714.74
5.3.280.0170.05714.50
5.3.270.0130.07014.54
5.3.260.0270.04314.56
5.3.250.0170.05314.58
5.3.240.0200.06714.65
5.3.230.0200.05314.57
5.3.220.0230.05014.44
5.3.210.0230.05014.55
5.3.200.0230.05014.63
5.3.190.0130.05714.48
5.3.180.0330.05714.63
5.3.170.0170.05314.52
5.3.160.0170.05314.55
5.3.150.0230.05714.55
5.3.140.0130.05714.47
5.3.130.0270.06014.50
5.3.120.0170.05714.52
5.3.110.0230.05014.41
5.3.100.0200.05014.09
5.3.90.0230.04713.97
5.3.80.0170.05713.93
5.3.70.0100.05713.95
5.3.60.0170.05013.96
5.3.50.0130.05713.81
5.3.40.0230.04713.93
5.3.30.0130.05713.97
5.3.20.0200.05013.61
5.3.10.0230.04313.57
5.3.00.0130.05313.67
5.2.170.0100.05311.19
5.2.160.0130.05311.17
5.2.150.0330.06011.27
5.2.140.0200.05011.05
5.2.130.0070.04711.13
5.2.120.0230.03311.22
5.2.110.0100.04711.22
5.2.100.0130.04011.23
5.2.90.0130.04311.23
5.2.80.0300.03311.22
5.2.70.0200.03311.09
5.2.60.0170.03710.99
5.2.50.0130.04711.13
5.2.40.0070.04710.92
5.2.30.0100.04311.02
5.2.20.0130.04011.09
5.2.10.0100.04010.88
5.2.00.0070.05010.76
5.1.60.0100.0379.97
5.1.50.0130.03310.09
5.1.40.0230.04710.07
5.1.30.0130.03710.45
5.1.20.0100.03710.48
5.1.10.0130.03710.11
5.1.00.0200.03710.11
5.0.50.0070.0308.64
5.0.40.0100.0238.52
5.0.30.0170.0338.33
5.0.20.0170.0278.29
5.0.10.0070.0378.34
5.0.00.0130.0478.31
4.4.90.0100.0205.92
4.4.80.0070.0205.91
4.4.70.0070.0205.85
4.4.60.0030.0235.91
4.4.50.0070.0205.87
4.4.40.0100.0405.91
4.4.30.0070.0305.88
4.4.20.0070.0276.00
4.4.10.0100.0206.01
4.4.00.0030.0375.92
4.3.110.0100.0205.79
4.3.100.0030.0235.82
4.3.90.0100.0175.82
4.3.80.0030.0375.87
4.3.70.0030.0275.79
4.3.60.0070.0235.79
4.3.50.0000.0275.82
4.3.40.0100.0305.76
4.3.30.0030.0234.54
4.3.20.0070.0234.61
4.3.10.0100.0174.50
4.3.00.0100.0206.93

preferences:
142.91 ms | 1398 KiB | 7 Q