3v4l.org

run code in 300+ PHP versions simultaneously
<?php Which is a valid character for starting a PHP function name?

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)
5.6.80.0070.03720.34
5.5.240.0070.07320.07
5.4.400.0430.07018.77
5.4.390.0400.07318.61
5.4.380.0630.06318.53
5.4.370.0430.04718.75
5.4.360.1870.06018.75
5.4.350.0370.06718.49
5.4.340.0500.06018.78
5.4.320.0530.06318.82
5.4.310.0500.06318.51
5.4.300.0330.06018.78
5.4.290.0500.06318.86
5.4.280.0200.07018.71
5.4.270.0270.06718.85
5.4.260.0300.05318.73
5.4.250.0400.05018.60
5.4.240.0330.07018.79
5.4.230.0330.05018.79
5.4.220.0400.06318.82
5.4.210.0430.05718.73
5.4.200.0300.08016.53
5.4.190.0300.08718.66
5.4.180.0470.06018.73
5.4.170.0400.05318.75
5.4.160.0270.07318.48
5.4.150.0470.07318.50
5.4.140.0370.06716.29
5.4.130.0470.04716.20
5.4.120.0370.06016.25
5.4.110.0400.05316.30
5.4.100.0370.07016.41
5.4.90.0270.06716.27
5.4.80.0530.05016.30
5.4.70.0470.05316.22
5.4.60.0370.05316.22
5.4.50.0400.06016.20
5.4.40.0530.07016.41
5.4.30.0700.05016.40
5.4.20.0370.07316.28
5.4.10.0530.05316.36
5.4.00.0600.06015.68
5.3.290.0500.06314.63
5.3.280.0500.06714.56
5.3.270.0370.06714.54
5.3.260.0570.05714.66
5.3.250.0430.06314.68
5.3.240.0400.06714.58
5.3.230.0430.05314.59
5.3.220.0470.05014.48
5.3.210.0530.06714.54
5.3.200.0330.06014.54
5.3.190.0430.06014.48
5.3.180.0330.04314.54
5.3.170.1200.06714.59
5.3.160.0300.06014.53
5.3.150.1100.07314.55
5.3.140.0400.05314.45
5.3.130.0300.07014.54
5.3.120.0470.06314.58
5.3.110.1370.07014.53
5.3.100.0330.06014.07
5.3.90.0330.06014.04
5.3.80.0200.06714.04
5.3.70.0270.06713.93
5.3.60.0530.03713.93
5.3.50.0330.05313.98
5.3.40.0470.05713.93
5.3.30.0570.04713.85
5.3.20.0530.04313.70
5.3.10.0230.05313.57
5.3.00.0400.05713.65
5.2.170.0270.04311.09
5.2.160.0270.04011.28
5.2.150.0000.05011.18
5.2.140.0070.05011.12
5.2.130.0170.03711.05
5.2.120.0030.05311.25
5.2.110.0300.03311.08
5.2.100.0200.04311.04
5.2.90.0200.04311.14
5.2.80.0130.05011.04
5.2.70.0270.04311.05
5.2.60.0300.04011.04
5.2.50.0300.04711.07
5.2.40.0200.04011.03
5.2.30.0270.04310.92
5.2.20.0370.03310.96
5.2.10.0170.03710.91
5.2.00.0270.05310.75
5.1.60.0170.0439.96
5.1.50.0230.03710.01
5.1.40.0330.04310.11
5.1.30.0230.03010.39
5.1.20.0500.05010.34
5.1.10.1270.04310.04
5.1.00.0230.04710.15
5.0.50.0030.0378.60
5.0.40.0030.0378.45
5.0.30.0130.0578.24
5.0.20.0200.0408.38
5.0.10.0130.0278.24
5.0.00.0100.0438.19
4.4.90.0070.0235.91
4.4.80.0130.0275.87
4.4.70.0130.0275.88
4.4.60.0070.0275.81
4.4.50.1270.0235.86
4.4.40.0170.0375.86
4.4.30.0100.0305.86
4.4.20.0330.0205.91
4.4.10.0200.0275.91
4.4.00.0130.0435.84
4.3.110.0170.0275.82
4.3.100.0230.0205.79
4.3.90.0100.0335.87
4.3.80.0170.0405.78
4.3.70.0100.0275.78
4.3.60.0170.0235.81
4.3.50.0130.0305.80
4.3.40.0100.0475.77
4.3.30.0000.0334.55
4.3.20.0070.0304.61
4.3.10.0100.0234.51
4.3.00.0100.0236.46

preferences:
144.62 ms | 939 KiB | 8 Q