3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('b' => 'b'); function &f($b){ global $a; return $a[$b]; } f('b') = 'c'; var_dump($a);

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)
5.6.110.0070.05321.00
5.6.100.0000.04321.00
5.6.90.0130.08321.13
5.6.80.0200.06720.49
5.5.270.0130.06020.76
5.5.260.0100.07020.77
5.5.250.0030.09020.58
5.5.240.0130.06720.24
5.4.430.0770.05319.21
5.4.420.0670.06019.57
5.4.410.0730.05719.21
5.4.400.0630.05018.89
5.4.390.0670.04718.99
5.4.380.0600.05019.07
5.4.370.0530.05719.32
5.4.360.0800.06319.06
5.4.350.0630.05019.34
5.4.340.0670.05019.00
5.4.320.0600.05319.11
5.4.310.0600.05719.31
5.4.300.0630.05019.31
5.4.290.0700.04718.96
5.4.280.0630.06319.12
5.4.270.0670.04719.32
5.4.260.0570.05719.31
5.4.250.0600.05718.90
5.4.240.0700.05319.22
5.4.230.0800.05319.10
5.4.220.0570.06018.88
5.4.210.0630.05319.01
5.4.200.0700.04017.02
5.4.190.0730.06318.96
5.4.180.0670.05319.26
5.4.170.0570.05719.11
5.4.160.0630.05318.92
5.4.150.0570.05319.12
5.4.140.0570.05716.46
5.4.130.0700.03716.55
5.4.120.0770.06016.35
5.4.110.0730.05016.46
5.4.100.0700.05716.44
5.4.90.0670.05016.25
5.4.80.0530.05716.45
5.4.70.0930.05316.43
5.4.60.0830.05716.67
5.4.50.0770.04716.54
5.4.40.0730.05316.23
5.4.30.0670.04716.51
5.4.20.0830.04716.42
5.4.10.0700.05016.19
5.4.00.0570.05315.85
5.3.290.0700.05314.66
5.3.280.0630.04714.73
5.3.270.0570.05714.56
5.3.260.0600.05314.53
5.3.250.0500.06014.61
5.3.240.0630.04714.75
5.3.230.0570.05314.75
5.3.220.0530.05714.72
5.3.210.0570.05714.42
5.3.200.0700.04014.50
5.3.190.0700.04014.63
5.3.180.0730.04314.59
5.3.170.0670.04714.59
5.3.160.0600.05314.50
5.3.150.0570.05314.47
5.3.140.0730.05314.56
5.3.130.0670.07314.57
5.3.120.0770.04014.45
5.3.110.0670.04714.50
5.3.100.0630.04714.10
5.3.90.0700.06714.17
5.3.80.1000.05013.87
5.3.70.0870.04013.95
5.3.60.0800.04713.98
5.3.50.0830.06314.00
5.3.40.0800.04713.85
5.3.30.0730.05313.81
5.3.20.0670.04013.58
5.3.10.0800.04713.61
5.3.00.0700.05713.54
5.2.170.0670.04011.07
5.2.160.0700.04011.30
5.2.150.0630.04311.12
5.2.140.0770.04311.25
5.2.130.0600.04311.07
5.2.120.0700.04311.17
5.2.110.0600.04011.00
5.2.100.0530.04311.21
5.2.90.0570.04311.01
5.2.80.0570.04311.09
5.2.70.0530.05011.00
5.2.60.0470.04311.16
5.2.50.0670.03710.91
5.2.40.0470.03310.85
5.2.30.0400.04010.97
5.2.20.0400.03710.91
5.2.10.0430.03310.89
5.2.00.0400.04010.77
5.1.60.0470.0339.92
5.1.50.0430.0309.93
5.1.40.0370.0339.95
5.1.30.0430.03310.40
5.1.20.0500.02710.52
5.1.10.0370.0379.96
5.1.00.0530.03010.01
5.0.50.0300.0238.60
5.0.40.0330.0208.29
5.0.30.0300.0408.32
5.0.20.0270.0278.05
5.0.10.0230.0278.16
5.0.00.0300.0438.04
4.4.90.0270.0205.94
4.4.80.0230.0175.84
4.4.70.0170.0235.73
4.4.60.0230.0175.86
4.4.50.0130.0275.75
4.4.40.0170.0375.90
4.4.30.0170.0235.76
4.4.20.0170.0235.93
4.4.10.0130.0275.89
4.4.00.0270.0405.77
4.3.110.0200.0205.72
4.3.100.0330.0175.79
4.3.90.0270.0275.77
4.3.80.0200.0475.64
4.3.70.0270.0275.69
4.3.60.0200.0335.66
4.3.50.0270.0235.77
4.3.40.0300.0335.62
4.3.30.0100.0304.61
4.3.20.0130.0204.55
4.3.10.0070.0304.52
4.3.00.0030.0207.09

preferences:
167.73 ms | 1005 KiB | 7 Q