3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = function() { $p = 'abcde'; $c = 'abc'; var_export(substr($p, 0, strlen($c)) == $c, true); }; $s = microtime(1); for ($i =0; $i < 100; $i++) { $test(); } echo printf('%f2', microtime(1) - $s);

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)
7.2.00.0060.00619.41
7.1.70.0000.00817.25
7.1.60.0040.01819.82
7.1.50.0000.02116.96
7.1.00.0070.07322.45
7.0.200.0110.00016.76
7.0.140.0070.06322.18
7.0.100.0170.07719.96
7.0.90.0100.08019.86
7.0.80.0200.07719.87
7.0.70.0130.05319.92
7.0.60.0070.08019.82
7.0.50.0200.04720.28
7.0.40.0000.04720.05
7.0.30.0100.06320.05
7.0.20.0030.05020.03
7.0.10.0030.06720.08
7.0.00.0070.04320.12
5.6.280.0000.07721.10
5.6.250.0070.08020.58
5.6.240.0000.09020.71
5.6.230.0030.09020.61
5.6.220.0070.08320.63
5.6.210.0200.07320.62
5.6.200.0130.06721.02
5.6.190.0100.05320.99
5.6.180.0130.03320.99
5.6.170.0030.04320.92
5.6.160.0070.06020.98
5.6.150.0100.06320.89
5.6.140.0030.05320.91
5.6.130.0030.05320.97
5.6.120.0100.08721.07
5.6.110.0070.08721.02
5.6.100.0030.05720.90
5.6.90.0130.03320.96
5.6.80.0030.05320.48
5.6.70.0070.04320.43
5.6.60.0070.03720.46
5.6.50.0030.05020.44
5.6.40.0070.04320.33
5.6.30.0070.05720.35
5.6.20.0000.04720.39
5.6.10.0030.04020.33
5.6.00.0000.04020.40
5.5.380.0030.08720.35
5.5.370.0200.07020.31
5.5.360.0000.08720.41
5.5.350.0070.04720.27
5.5.340.0100.04320.73
5.5.330.0000.04320.82
5.5.320.0070.05320.82
5.5.310.0100.04020.84
5.5.300.0030.06720.82
5.5.290.0100.07020.81
5.5.280.0030.08320.59
5.5.270.0030.09020.71
5.5.260.0070.07020.75
5.5.250.0130.06020.54
5.5.240.0030.03720.11
5.5.230.0030.04020.25
5.5.220.0070.04020.16
5.5.210.0030.04720.07
5.5.200.0100.03320.19
5.5.190.0030.06319.93
5.5.180.0100.03720.14
5.5.160.0100.04320.22
5.5.150.0000.05720.20
5.5.140.0000.04320.22
5.5.130.0000.04020.22
5.5.120.0070.03720.18
5.5.110.0000.05020.13
5.5.100.0030.04020.13
5.5.90.0070.03719.98
5.5.80.0070.07020.13
5.5.70.0000.08020.11
5.5.60.0070.06719.95
5.5.50.0130.04020.10
5.5.40.0100.06319.99
5.5.30.0130.06320.05
5.5.20.0170.07320.02
5.5.10.0030.05019.93
5.5.00.0100.07020.07
5.4.450.0030.08019.37
5.4.440.0130.05319.20
5.4.430.0100.07019.46
5.4.420.0070.05719.53
5.4.410.0130.04319.23
5.4.400.0000.04319.17
5.4.390.0070.06318.95
5.4.380.0070.07019.13
5.4.370.0030.03319.21
5.4.360.0000.05019.03
5.4.350.0070.04719.07
5.4.340.0030.04018.86
5.4.320.0000.05019.03
5.4.310.0130.02319.05
5.4.300.0030.03719.21
5.4.290.0000.04019.03
5.4.280.0070.03719.16
5.4.270.0000.04019.14
5.4.260.0100.03019.16
5.4.250.0070.04718.87
5.4.240.0100.05718.85
5.4.230.0030.07019.04
5.4.220.0100.07318.95
5.4.210.0130.07318.84
5.4.200.0130.07018.90
5.4.190.0070.07719.14
5.4.180.0000.08019.08
5.4.170.0030.08318.89
5.4.160.0030.04719.23
5.4.150.0100.07718.88
5.4.140.0070.07716.41
5.4.130.0070.07316.45
5.4.120.0100.04016.35
5.4.110.0100.06316.44
5.4.100.0100.06016.46
5.4.90.0130.06716.43
5.4.80.0030.07716.44
5.4.70.0170.06316.44
5.4.60.0000.07016.32
5.4.50.0070.07016.44
5.4.40.0030.07316.46
5.4.30.0100.07016.31
5.4.20.0100.06316.43
5.4.10.0030.05316.39
5.4.00.0130.06315.73
5.3.290.0070.07314.68
5.3.280.0100.06714.66
5.3.270.0070.07714.63
5.3.260.0100.04314.63
5.3.250.0030.04314.57
5.3.240.0070.07314.58
5.3.230.0130.04314.58
5.3.220.0070.07314.68
5.3.210.0100.06014.54
5.3.200.0030.07314.58
5.3.190.0100.07714.70
5.3.180.0100.07014.59
5.3.170.0100.07014.67
5.3.160.0030.05014.55
5.3.150.0100.07714.54
5.3.140.0100.06714.54
5.3.130.0170.06014.57
5.3.120.0200.06014.47
5.3.110.0100.06714.61
5.3.100.0100.07014.05
5.3.90.0070.07014.03
5.3.80.0100.07014.14
5.3.70.0000.07714.11
5.3.60.0100.04714.11
5.3.50.0130.05013.93
5.3.40.0070.07314.09
5.3.30.0030.06713.97
5.3.20.0000.07313.73
5.3.10.0070.06713.78
5.3.00.0100.06713.76
5.2.170.0100.05711.14
5.2.160.0100.05711.01
5.2.150.0030.06310.96
5.2.140.0070.06311.19
5.2.130.0000.04011.16
5.2.120.0100.05011.09
5.2.110.0030.06710.92
5.2.100.0070.06010.89
5.2.90.0030.06311.09
5.2.80.0000.05711.11
5.2.70.0130.05711.11
5.2.60.0030.06311.05
5.2.50.0030.06011.08
5.2.40.0100.05011.02
5.2.30.0000.04010.99
5.2.20.0000.07011.03
5.2.10.0070.03710.86
5.2.00.0030.06010.72
5.1.60.0000.05710.01
5.1.50.0030.0539.82
5.1.40.0070.0509.96
5.1.30.0030.05710.34
5.1.20.0100.04710.21
5.1.10.0170.0409.90
5.1.00.0000.03310.10
5.0.50.0030.0338.61
5.0.40.0070.0378.54
5.0.30.0070.0438.54
5.0.20.0000.0278.54
5.0.10.0030.0438.54
5.0.00.0130.0378.54
4.4.90.0000.0378.54
4.4.80.0100.0278.54
4.4.70.0000.0378.54
4.4.60.0000.0378.54
4.4.50.0000.0408.54
4.4.40.0000.0578.54
4.4.30.0000.0408.54
4.4.20.0000.0378.54
4.4.10.0000.0238.54
4.4.00.0070.0508.54
4.3.110.0030.0308.54
4.3.100.0030.0278.54
4.3.90.0030.0338.54
4.3.80.0030.0538.54
4.3.70.0000.0238.54
4.3.60.0030.0208.54
4.3.50.0070.0308.54
4.3.40.0000.0538.54
4.3.30.0070.0338.54
4.3.20.0070.0308.54
4.3.10.0000.0278.54
4.3.00.0030.0178.54

preferences:
39.96 ms | 401 KiB | 5 Q