3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(['a'=>1, 'b'=>1]+['a'=>2, 'c'=>2])

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)
5.4.360.0200.05018.73
5.4.350.0130.03313.73
5.4.340.0070.03713.72
5.4.320.0070.04014.13
5.4.310.0100.03714.09
5.4.300.0030.04014.14
5.4.290.0070.04314.09
5.4.280.0000.04313.96
5.4.270.0170.03014.10
5.4.260.0130.03313.98
5.4.250.0100.03714.09
5.4.240.0030.04014.21
5.4.230.0070.04314.00
5.4.220.0170.03014.08
5.4.210.0130.03314.09
5.4.200.0030.04014.20
5.4.190.0030.04014.08
5.4.180.0130.03014.02
5.4.170.0070.03314.10
5.4.160.0100.03014.01
5.4.150.0030.03714.04
5.4.140.0070.03713.93
5.4.130.0100.03013.68
5.4.120.0070.03313.80
5.4.110.0100.03013.72
5.4.100.0070.03713.71
5.4.90.0070.03713.71
5.4.80.0070.03713.64
5.4.70.0030.03713.72
5.4.60.0000.04313.64
5.4.50.0200.02713.72
5.4.40.0030.03713.65
5.4.30.0070.03713.71
5.4.20.0070.04013.70
5.4.10.0100.03313.63
5.4.00.0030.04713.30
5.3.290.0100.04714.48
5.3.280.0130.04714.60
5.3.270.0030.04714.63
5.3.260.0130.04314.45
5.3.250.0070.04314.48
5.3.240.0070.05014.61
5.3.230.0100.03714.52
5.3.220.0130.03314.58
5.3.210.0170.03314.43
5.3.200.0130.03314.59
5.3.190.0130.03314.45
5.3.180.0130.03314.46
5.3.170.0170.03014.45
5.3.160.0070.04014.41
5.3.150.0200.03014.48
5.3.140.0200.02714.61
5.3.130.0070.04714.60
5.3.120.0100.03714.58
5.3.110.0000.04714.45
5.3.100.0070.03713.92
5.3.90.0130.03013.93
5.3.80.0070.03714.02
5.3.70.0030.04013.90
5.3.60.0100.03313.88
5.3.50.0000.04313.84
5.3.40.0100.03313.81
5.3.30.0070.03313.79
5.3.20.0030.03713.70
5.3.10.0030.03713.63
5.3.00.0070.03713.50
5.2.170.0030.03011.06
5.2.160.0000.03311.10
5.2.150.0030.03311.10
5.2.140.0000.03311.11
5.2.130.0100.02311.07
5.2.120.0070.02711.01
5.2.110.0000.03711.19
5.2.100.0000.03311.11
5.2.90.0000.03310.96
5.2.80.0070.03710.96
5.2.70.0030.03311.01
5.2.60.0130.02711.05
5.2.50.0000.03310.90
5.2.40.0070.02710.99
5.2.30.0030.03010.96
5.2.20.0000.03310.92
5.2.10.0100.02310.78
5.2.00.0070.03010.75
5.1.60.0030.02710.00
5.1.50.0030.0279.91
5.1.40.0030.0279.96
5.1.30.0000.03010.29
5.1.20.0130.02010.32
5.1.10.0030.02710.07
5.1.00.0030.02710.07
5.0.50.0100.0178.47
5.0.40.0070.0178.37
5.0.30.0000.0378.33
5.0.20.0000.0238.14
5.0.10.0030.0308.07
5.0.00.0000.0338.21
4.4.90.0070.0135.77
4.4.80.0030.0175.82
4.4.70.0030.0135.83
4.4.60.0070.0135.78
4.4.50.0000.0205.77
4.4.40.0070.0275.75
4.4.30.0030.0175.86
4.4.20.0000.0205.88
4.4.10.0070.0135.89
4.4.00.0100.0205.89
4.3.110.0070.0135.77
4.3.100.0070.0135.69
4.3.90.0000.0175.75
4.3.80.0030.0235.73
4.3.70.0000.0175.75
4.3.60.0070.0135.73
4.3.50.0030.0135.73
4.3.40.0030.0235.72
4.3.30.0000.0174.51
4.3.20.0070.0104.45
4.3.10.0030.0174.44
4.3.00.0000.0277.21

preferences:
130.85 ms | 1398 KiB | 7 Q