3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'foo'; $range = range(1,100); foreach ($range as $i) { $$i = ''; } foreach ($range as $y) { $$y = ''; } var_dump($a = memory_get_usage()); foreach ($range as $i) { $$i = $foo; } var_dump($b = memory_get_usage()); foreach ($range as $y) { $$y &= $foo; } var_dump($c = memory_get_usage()); echo "Copy: " . ($b - $a) . "\n"; echo "Ref : " . ($c - $b) . "\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)
7.4.00.0060.01215.10
7.3.120.0070.01014.65
7.3.110.0060.01215.13
7.3.100.0040.01114.53
7.3.90.0000.01014.89
7.3.80.0080.00414.92
7.3.70.0060.00914.77
7.3.60.0030.00714.91
7.3.50.0080.00014.47
7.3.40.0000.01814.81
7.3.30.0030.00814.99
7.3.20.0060.00316.88
7.3.10.0070.00716.53
7.3.00.0100.00716.70
7.2.250.0030.01615.16
7.2.240.0110.00715.34
7.2.230.0070.00415.13
7.2.220.0060.00615.23
7.2.210.0030.00715.18
7.2.200.0030.01415.05
7.2.190.0040.01115.02
7.2.180.0000.01515.15
7.2.170.0070.00315.23
7.2.00.0000.01219.10
7.1.330.0040.01115.60
7.1.320.0030.00915.82
7.1.310.0070.00716.03
7.1.300.0040.00715.71
7.1.290.0000.01515.74
7.1.280.0070.00615.66
7.1.270.0090.00615.70
7.1.260.0030.01016.02
7.1.70.0030.00717.18
7.1.60.0070.00417.41
7.1.50.0070.00716.86
7.1.00.0000.08022.54
7.0.200.0030.01316.88
7.0.140.0030.07322.09
7.0.60.0100.04719.90
7.0.50.0100.06717.83
7.0.40.0100.08720.06
7.0.30.0330.07320.02
7.0.20.0200.07320.02
7.0.10.0070.05319.99
7.0.00.0100.08720.00
5.6.280.0130.06021.10
5.6.210.0100.05720.51
5.6.200.0100.08018.23
5.6.190.0000.08720.57
5.6.180.0270.05020.67
5.6.170.0200.03720.50
5.6.160.0070.05020.50
5.6.150.0070.05018.21
5.6.140.0030.05718.11
5.6.130.0030.04018.21
5.6.120.0070.03721.02
5.6.110.0030.09020.96
5.6.100.0030.08021.11
5.6.90.0270.05021.04
5.6.80.0100.07020.44
5.6.70.0430.03320.52
5.5.350.0100.05320.33
5.5.340.0130.04017.97
5.5.330.0070.08020.27
5.5.320.0000.08720.32
5.5.310.0200.06720.41
5.5.300.0170.07317.94
5.5.290.0030.04017.92
5.5.280.0170.07320.87
5.5.270.0130.08320.79
5.5.260.0130.06020.89
5.5.250.0030.09020.68
5.5.240.0130.07720.26
5.4.450.0270.05719.42
5.4.440.0030.04719.46
5.4.430.0100.04719.10
5.4.420.0300.04319.10
5.4.410.0300.04319.29
5.4.400.0470.03719.16
5.4.390.0500.04018.80
5.4.380.0270.05718.65
5.4.370.0270.05718.47
5.4.360.0300.05318.55
5.4.350.0500.05318.67
5.4.340.0370.05718.73
5.4.320.0090.04712.48
5.4.310.0080.04912.48
5.4.300.0070.03812.48
5.4.290.0080.03612.48
5.4.280.0100.03012.38
5.4.270.0070.03512.38
5.4.260.0050.03912.38
5.4.250.0050.03712.38
5.4.240.0080.03312.38
5.4.230.0050.03912.37
5.4.220.0050.04312.37
5.4.210.0050.03712.37
5.4.200.0070.03712.37
5.4.190.0050.03612.37
5.4.180.0040.03812.36
5.4.170.0070.03912.38
5.4.160.0060.03612.38
5.4.150.0080.03412.37
5.4.140.0060.03712.05
5.4.130.0060.04412.04
5.4.120.0080.04912.00
5.4.110.0080.04812.00
5.4.100.0060.03711.99
5.4.90.0090.03412.00
5.4.80.0070.03712.00
5.4.70.0110.03311.99
5.4.60.0090.03211.99
5.4.50.0080.04111.99
5.4.40.0040.03611.98
5.4.30.0060.03511.98
5.4.20.0060.03511.98
5.4.10.0020.03711.98
5.4.00.0050.03611.47
5.3.290.0060.04012.80
5.3.280.0050.03912.71
5.3.270.0030.04112.73
5.3.260.0070.03912.72
5.3.250.0050.03812.72
5.3.240.0060.03912.72
5.3.230.0080.03712.71
5.3.220.0110.03312.68
5.3.210.0070.03812.68
5.3.200.0120.06112.68
5.3.190.0090.03512.67
5.3.180.0070.03612.67
5.3.170.0070.03512.67
5.3.160.0060.03812.67
5.3.150.0080.03612.67
5.3.140.0070.03612.66
5.3.130.0060.03912.66
5.3.120.0080.03712.66
5.3.110.0040.04012.66
5.3.100.0040.03912.12
5.3.90.0080.03412.09
5.3.80.0100.03212.08
5.3.70.0060.03712.08
5.3.60.0070.03612.07
5.3.50.0060.03712.02
5.3.40.0030.04012.02
5.3.30.0120.03411.98
5.3.20.0060.03411.76
5.3.10.0040.03611.72
5.3.00.0070.03511.71
5.2.170.0060.0299.21
5.2.160.0050.0289.21
5.2.150.0070.0289.21
5.2.140.0050.0309.21
5.2.130.0030.0319.18
5.2.120.0030.0309.17
5.2.110.0060.0289.18
5.2.100.0070.0269.17
5.2.90.0080.0279.17
5.2.80.0020.0329.17
5.2.70.0040.0309.17
5.2.60.0100.0249.12
5.2.50.0060.0299.08
5.2.40.0030.0309.07
5.2.30.0040.0319.04
5.2.20.0050.0289.03
5.2.10.0040.0278.96
5.2.00.0030.0308.83
5.1.60.0040.0238.12
5.1.50.0030.0268.11
5.1.40.0030.0248.10
5.1.30.0040.0308.45
5.1.20.0020.0308.47
5.1.10.0030.0278.19
5.1.00.0050.0248.19
5.0.50.0030.0216.68
5.0.40.0020.0216.54
5.0.30.0020.0376.34
5.0.20.0050.0186.31
5.0.10.0050.0196.29
5.0.00.0020.0326.29
4.4.90.0030.0154.78
4.4.80.0010.0174.75
4.4.70.0020.0164.75
4.4.60.0020.0164.75
4.4.50.0030.0154.77
4.4.40.0030.0254.71
4.4.30.0020.0164.75
4.4.20.0030.0144.84
4.4.10.0030.0154.85
4.4.00.0040.0244.76
4.3.110.0020.0164.67
4.3.100.0030.0144.66
4.3.90.0030.0144.63
4.3.80.0010.0254.58
4.3.70.0030.0144.63
4.3.60.0020.0154.63
4.3.50.0030.0154.63
4.3.40.0050.0284.54
4.3.30.0020.0163.33
4.3.20.0010.0173.31
4.3.10.0030.0153.27
4.3.00.0030.01718.23

preferences:
38.58 ms | 400 KiB | 5 Q