3v4l.org

run code in 500+ PHP versions simultaneously
<?php function f($a) { $b = 2; } $b = 1; f(&$b); echo $b;

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)
8.3.50.0070.00716.79
5.4.360.0270.04718.57
5.4.350.0170.04013.80
5.4.340.0230.03013.81
5.4.320.0070.04314.22
5.4.310.0130.04014.29
5.4.300.0230.02714.39
5.4.290.0130.04014.35
5.4.280.0170.03314.17
5.4.270.0070.04014.17
5.4.260.0170.04014.32
5.4.250.0070.04014.15
5.4.240.0030.05014.29
5.4.230.0070.04714.09
5.4.220.0000.05014.16
5.4.210.0070.04714.11
5.4.200.0170.03714.16
5.4.190.0100.05014.16
5.4.180.0000.04314.14
5.4.170.0000.04314.27
5.4.160.0030.04314.15
5.4.150.0070.04014.39
5.4.140.0100.03713.84
5.4.130.0100.03713.81
5.4.120.0000.04313.94
5.4.110.0000.04713.75
5.4.100.0100.04013.99
5.4.90.0100.03713.78
5.4.80.0030.04313.84
5.4.70.0030.03714.01
5.4.60.0070.03313.84
5.4.50.0070.03713.79
5.4.40.0070.03713.67
5.4.30.0030.03713.75
5.4.20.0070.03713.74
5.4.10.0030.03713.79
5.4.00.0070.03313.38
5.3.290.0170.04314.80
5.3.280.0030.04314.67
5.3.270.0070.04314.57
5.3.260.0030.04714.55
5.3.250.0100.03314.68
5.3.240.0100.03714.74
5.3.230.0070.05314.62
5.3.220.0070.04014.50
5.3.210.0030.04314.50
5.3.200.0130.03014.59
5.3.190.0130.03314.73
5.3.180.0070.03714.58
5.3.170.0030.04014.73
5.3.160.0070.03714.70
5.3.150.0070.04014.45
5.3.140.0100.03314.72
5.3.130.0030.04314.50
5.3.120.0070.04014.50
5.3.110.0030.05314.63
5.3.100.0100.03714.00
5.3.90.0100.04013.91
5.3.80.0130.03314.16
5.3.70.0070.04013.96
5.3.60.0070.04313.95
5.3.50.0070.03713.97
5.3.40.0070.04013.93
5.3.30.0030.04313.97
5.3.20.0170.02313.75
5.3.10.0070.03713.70
5.3.00.0100.03313.62
5.2.170.0130.02711.11
5.2.160.0070.03311.09
5.2.150.0030.03311.21
5.2.140.0000.03711.20
5.2.130.0070.02711.05
5.2.120.0070.03011.26
5.2.110.0070.03011.14
5.2.100.0030.03011.09
5.2.90.0000.03711.08
5.2.80.0100.03011.23
5.2.70.0030.03711.15
5.2.60.0070.03011.19
5.2.50.0100.02711.01
5.2.40.0000.03311.01
5.2.30.0100.02710.96
5.2.20.0070.02711.03
5.2.10.0030.03010.81
5.2.00.0070.03310.68
5.1.60.0070.0209.95
5.1.50.0030.02710.06
5.1.40.0070.0279.94
5.1.30.0100.02710.52
5.1.20.0070.03010.49
5.1.10.0030.0309.99
5.1.00.0100.03310.03
5.0.50.0030.0208.67
5.0.40.0100.0178.55
5.0.30.0000.0338.16
5.0.20.0000.0308.23
5.0.10.0000.0238.35
5.0.00.0030.0338.12
4.4.90.0030.0205.83
4.4.80.0000.0205.88
4.4.70.0030.0135.98
4.4.60.0000.0175.94
4.4.50.0030.0136.00
4.4.40.0100.0205.85
4.4.30.0070.0105.98
4.4.20.0030.0135.88
4.4.10.0030.0135.92
4.4.00.0000.0275.93
4.3.110.0000.0205.93
4.3.100.0000.0235.79
4.3.90.0000.0175.76
4.3.80.0000.0335.76
4.3.70.0000.0175.71
4.3.60.0070.0105.75
4.3.50.0070.0135.75
4.3.40.0030.0235.75
4.3.30.0030.0174.60
4.3.20.0000.0174.48
4.3.10.0030.0134.52
4.3.00.0100.0209.43

preferences:
46.27 ms | 1004 KiB | 4 Q