3v4l.org

run code in 300+ PHP versions simultaneously
<?php function quickRandom($length = 16) { $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); } echo strlen(quickRandom(311));

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)
7.2.00.0060.00919.32
7.1.100.0100.00317.88
7.1.70.0030.00717.16
7.1.60.0100.01319.43
7.1.50.0240.01434.92
7.1.00.0000.06322.49
7.0.200.0000.00716.82
7.0.140.0030.07322.21
7.0.60.0000.06719.87
7.0.50.0100.03317.91
7.0.40.0000.07020.13
7.0.30.0370.03320.24
7.0.20.0370.07720.10
7.0.10.0300.07320.05
7.0.00.0130.08320.20
5.6.280.0000.07721.12
5.6.210.0100.08020.67
5.6.200.0130.03718.29
5.6.190.0070.09320.61
5.6.180.0270.08020.61
5.6.170.0230.04720.47
5.6.160.0100.06720.39
5.6.150.0030.04318.30
5.6.140.0000.06318.17
5.6.130.0100.06718.17
5.6.120.0100.08021.16
5.6.110.0030.05321.16
5.6.100.0070.06720.95
5.6.90.0070.08320.97
5.6.80.0030.08720.43
5.6.70.0200.07020.44
5.5.350.0000.07320.44
5.5.340.0030.08717.97
5.5.330.0030.08020.40
5.5.320.0200.06720.42
5.5.310.0300.05320.30
5.5.300.0000.04717.93
5.5.290.0070.08018.08
5.5.280.0030.04020.88
5.5.270.0000.09320.78
5.5.260.0100.07720.68
5.5.250.0130.07320.60
5.5.240.0130.07020.14
5.4.450.0900.07319.39
5.4.440.1070.06319.30
5.4.430.1000.05319.42
5.4.420.1070.05719.48
5.4.410.0130.06019.34
5.4.400.0400.06318.86
5.4.390.0500.07318.61
5.4.380.0270.05018.75
5.4.370.0300.06318.75
5.4.360.0100.06318.78
5.4.350.0050.04412.04
5.4.340.0090.03312.04
5.4.320.0040.03912.53
5.4.310.0090.03612.52
5.4.300.0080.04012.53
5.4.290.0050.03912.52
5.4.280.0070.03812.41
5.4.270.0100.04712.41
5.4.260.0040.03912.41
5.4.250.0270.05719.00
5.4.240.0130.06719.01
5.4.230.0100.06018.89
5.4.220.0070.06018.89
5.4.210.0200.05018.89
5.4.200.0030.06018.99
5.4.190.0100.05319.01
5.4.180.0170.05318.95
5.4.170.0070.06018.89
5.4.160.0100.05018.79
5.4.150.0030.08018.88
5.4.140.0170.04316.40
5.4.130.0030.05716.45
5.4.120.0070.05016.39
5.4.110.0100.05316.54
5.4.100.0030.05316.68
5.4.90.0000.06016.62
5.4.80.0130.04316.61
5.4.70.0070.07316.52
5.4.60.0170.06016.53
5.4.50.0100.05716.42
5.4.40.0100.06316.42
5.4.30.0070.05716.39
5.4.20.0070.07316.68
5.4.10.0070.05716.53
5.4.00.0070.06315.93
5.3.290.0030.05212.80
5.3.280.0130.07014.63
5.3.270.0100.05714.70
5.3.260.0070.07714.73
5.3.250.0200.06014.77
5.3.240.0100.05314.46
5.3.230.0100.07014.69
5.3.220.0070.05314.60
5.3.210.0100.05014.68
5.3.200.0170.04014.57
5.3.190.0100.05014.57
5.3.180.0130.05014.73
5.3.170.0130.06014.61
5.3.160.0030.05314.57
5.3.150.0100.06314.75
5.3.140.0170.04314.66
5.3.130.0070.05714.76
5.3.120.0100.05714.64
5.3.110.0100.05714.66
5.3.100.0130.05014.05
5.3.90.0170.04014.13
5.3.80.0030.07314.14
5.3.70.0100.06013.88
5.3.60.0070.05314.14
5.3.50.0070.05713.95
5.3.40.0100.04714.20
5.3.30.0170.04014.11
5.3.20.0100.06013.82
5.3.10.0030.05313.92
5.3.00.0130.06713.73
5.2.170.0100.05011.13
5.2.160.0030.04311.25
5.2.150.0070.04011.25
5.2.140.0000.04311.08
5.2.130.0070.04010.96
5.2.120.0000.04311.13
5.2.110.0000.06011.12
5.2.100.0070.04311.30
5.2.90.0000.04311.21
5.2.80.0000.04711.20
5.2.70.0100.03711.07
5.2.60.0070.05311.18
5.2.50.0070.03711.06
5.2.40.0100.05011.10
5.2.30.0000.04711.07
5.2.20.0100.03711.15
5.2.10.0100.03311.11
5.2.00.0070.03710.91
5.1.60.0100.02710.00
5.1.50.0100.04310.09
5.1.40.0030.03310.16
5.1.30.0100.05010.54
5.1.20.0000.04010.48
5.1.10.0000.04010.06
5.1.00.0000.04010.08
5.0.50.0000.0308.67
5.0.40.0030.0278.41
5.0.30.0030.0408.30
5.0.20.0070.0278.29
5.0.10.0000.0378.25
5.0.00.0030.0408.20
4.4.90.0030.0306.82
4.4.80.0030.0306.82
4.4.70.0000.0236.82
4.4.60.0070.0176.82
4.4.50.0070.0236.80
4.4.40.0070.0306.72
4.4.30.0000.0236.68
4.4.20.0070.0276.67
4.4.10.0000.0236.67
4.4.00.0030.0406.67
4.3.110.0000.0236.67
4.3.100.0000.0236.67
4.3.90.0000.0236.67
4.3.80.0000.0377.21
4.3.70.0030.0237.21
4.3.60.0000.0207.21
4.3.50.0030.0277.21
4.3.40.0000.0337.21
4.3.30.0000.0237.21
4.3.20.0030.0207.21
4.3.10.0000.0237.21
4.3.00.0170.0207.62

preferences:
45.77 ms | 400 KiB | 5 Q