3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3,4); foreach($a AS &$y) { $y = $y*2; } unset(&$y); foreach($a AS $y) { echo $y.', '; } echo PHP_EOL, $y , PHP_EOL; foreach($a AS $x) { echo $x.', '; } echo PHP_EOL, $x , PHP_EOL;

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)
5.4.350.0050.03612.02
5.4.340.0070.04912.01
5.4.320.0090.04512.50
5.4.310.0090.03812.50
5.4.300.0050.04112.50
5.4.290.0100.04412.50
5.4.280.0090.03612.39
5.4.270.0080.03812.39
5.4.260.0060.04312.39
5.4.250.0070.03712.39
5.4.240.0050.03912.39
5.4.230.0050.03912.39
5.4.220.0070.03512.39
5.4.210.0060.03612.39
5.4.200.0110.03512.39
5.4.190.0090.03412.38
5.4.180.0070.03912.38
5.4.170.0090.04712.39
5.4.160.0060.03912.38
5.4.150.0060.03812.38
5.4.140.0080.04012.07
5.4.130.0080.03512.05
5.4.120.0060.03512.02
5.4.110.0090.03412.01
5.4.100.0050.04212.02
5.4.90.0110.03612.01
5.4.80.0070.04012.01
5.4.70.0070.03712.00
5.4.60.0080.03512.00
5.4.50.0050.04012.00
5.4.40.0090.04412.00
5.4.30.0080.04512.00
5.4.20.0090.04011.99
5.4.10.0090.04112.00
5.4.00.0080.04211.48
5.3.290.0090.04412.80
5.3.280.0050.04112.71
5.3.270.0070.03912.72
5.3.260.0060.04112.71
5.3.250.0070.04012.72
5.3.240.0080.04312.71
5.3.230.0090.03712.71
5.3.220.0100.03612.68
5.3.210.0050.04212.68
5.3.200.0110.03712.68
5.3.190.0050.03912.68
5.3.180.0060.04212.67
5.3.170.0070.04512.67
5.3.160.0080.04312.68
5.3.150.0090.03912.67
5.3.140.0080.04612.66
5.3.130.0080.04112.66
5.3.120.0070.04412.66
5.3.110.0090.03812.66
5.3.100.0070.04112.12
5.3.90.0100.03912.08
5.3.80.0050.03812.08
5.3.70.0090.03712.07
5.3.60.0070.03812.06
5.3.50.0040.04012.00
5.3.40.0060.03912.00
5.3.30.0020.04011.95
5.3.20.0070.04811.73
5.3.10.0090.04511.70
5.3.00.0090.03611.69
5.2.170.0060.0359.18
5.2.160.0040.0329.18
5.2.150.0070.0329.18
5.2.140.0050.0349.18
5.2.130.0050.0359.14
5.2.120.0040.0319.14
5.2.110.0030.0349.15
5.2.100.0080.0299.14
5.2.90.0050.0309.14
5.2.80.0070.0299.13
5.2.70.0040.0349.14
5.2.60.0070.0289.09
5.2.50.0070.0319.06
5.2.40.0050.0379.04
5.2.30.0060.0329.02
5.2.20.0070.0319.01
5.2.10.0080.0268.92
5.2.00.0030.0338.79
5.1.60.0060.0248.07
5.1.50.0060.0268.07
5.1.40.0030.0278.04
5.1.30.0070.0248.40
5.1.20.0080.0248.42
5.1.10.0050.0278.14
5.1.00.0050.0268.14
5.0.50.0050.0206.63
5.0.40.0050.0196.48
5.0.30.0050.0336.30
5.0.20.0050.0196.27
5.0.10.0030.0246.24
5.0.00.0040.0406.23
4.4.90.0060.0154.78
4.4.80.0040.0164.75
4.4.70.0020.0194.75
4.4.60.0040.0194.76
4.4.50.0050.0174.77
4.4.40.0040.0294.70
4.4.30.0000.0204.76
4.4.20.0050.0164.84
4.4.10.0050.0194.85
4.4.00.0120.0564.76
4.3.110.0060.0284.67
4.3.100.0050.0154.66
4.3.90.0040.0164.63
4.3.80.0130.0254.59
4.3.70.0050.0224.63
4.3.60.0090.0204.62
4.3.50.0070.0244.62
4.3.40.0060.0264.53
4.3.30.0030.0223.29
4.3.20.0040.0183.27
4.3.10.0030.0153.22
4.3.00.0170.0206.66

preferences:
141.64 ms | 1386 KiB | 7 Q