3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a(&$a) { $a = 4; } $a = 2; echo "$a\n"; a(&$a); echo "$a\n";

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)
5.4.360.0200.05018.77
5.4.350.0070.03313.82
5.4.340.0100.04013.78
5.4.320.0070.04014.26
5.4.310.0030.04314.39
5.4.300.0130.03314.26
5.4.290.0230.04014.26
5.4.280.0030.04714.33
5.4.270.0070.03714.19
5.4.260.0070.04014.17
5.4.250.0070.03714.18
5.4.240.0130.03314.26
5.4.230.0070.04014.19
5.4.220.0100.04014.22
5.4.210.0000.05014.11
5.4.200.0130.03714.17
5.4.190.0070.04314.16
5.4.180.0170.03014.21
5.4.170.0100.03314.16
5.4.160.0070.04014.32
5.4.150.0130.03014.15
5.4.140.0100.04713.96
5.4.130.0070.04013.82
5.4.120.0130.03713.80
5.4.110.0170.04013.71
5.4.100.0070.03714.02
5.4.90.0030.04313.77
5.4.80.0100.03713.79
5.4.70.0030.03713.86
5.4.60.0100.03313.77
5.4.50.0100.03713.79
5.4.40.0130.03713.84
5.4.30.0100.04313.75
5.4.20.0070.04013.78
5.4.10.0100.04013.74
5.4.00.0070.04013.33
5.3.290.0100.04714.82
5.3.280.0100.03714.54
5.3.270.0070.04314.63
5.3.260.0030.04714.67
5.3.250.0030.04714.58
5.3.240.0070.04014.59
5.3.230.0070.04014.78
5.3.220.0070.04314.54
5.3.210.0070.04314.66
5.3.200.0070.03714.50
5.3.190.0200.02714.57
5.3.180.0070.03714.69
5.3.170.0100.04014.70
5.3.160.0070.04014.49
5.3.150.0070.03714.51
5.3.140.0230.02714.73
5.3.130.0030.04014.70
5.3.120.0130.04014.53
5.3.110.0000.05714.58
5.3.100.0170.03014.02
5.3.90.0100.03314.00
5.3.80.0070.04314.06
5.3.70.0000.05014.14
5.3.60.0070.04314.05
5.3.50.0030.04013.88
5.3.40.0000.04313.87
5.3.30.0030.04013.82
5.3.20.0100.04013.75
5.3.10.0130.03313.77
5.3.00.0100.03713.79
5.2.170.0030.03711.11
5.2.160.0000.03711.08
5.2.150.0030.03311.07
5.2.140.0100.03011.05
5.2.130.0030.03011.07
5.2.120.0100.03011.09
5.2.110.0070.03311.22
5.2.100.0030.03011.13
5.2.90.0030.03011.07
5.2.80.0030.03711.17
5.2.70.0000.03311.08
5.2.60.0070.03311.17
5.2.50.0070.03010.98
5.2.40.0070.03011.07
5.2.30.0070.03310.99
5.2.20.0100.03711.14
5.2.10.0000.03310.79
5.2.00.0070.03010.79
5.1.60.0030.0339.96
5.1.50.0070.03010.14
5.1.40.0170.0139.90
5.1.30.0030.02710.31
5.1.20.0030.03710.43
5.1.10.0070.02310.20
5.1.00.0070.02710.08
5.0.50.0000.0278.48
5.0.40.0000.0278.38
5.0.30.0130.0278.31
5.0.20.0030.0208.13
5.0.10.0070.0308.11
5.0.00.0070.0308.20
4.4.90.0000.0205.81
4.4.80.0000.0175.83
4.4.70.0030.0135.93
4.4.60.0030.0135.82
4.4.50.0000.0235.87
4.4.40.0070.0235.91
4.4.30.0030.0275.89
4.4.20.0000.0235.87
4.4.10.0030.0175.96
4.4.00.0000.0275.89
4.3.110.0000.0235.77
4.3.100.0070.0175.75
4.3.90.0030.0205.74
4.3.80.0000.0275.85
4.3.70.0030.0135.71
4.3.60.0030.0135.72
4.3.50.0000.0205.79
4.3.40.0000.0275.80
4.3.30.0070.0104.53
4.3.20.0000.0174.45
4.3.10.0000.0174.47
4.3.00.0100.0207.40

preferences:
143.61 ms | 1394 KiB | 7 Q