3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Tracking { function __construct($client_id) {} function createIdent($charcount) { $ident = null; $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; $x = 0; while ($x <= $charcount) { $ident .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); $x++; } return $ident; } } $tracking = new Tracking(1477); echo $tracking->createIdent(7);

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)
7.2.00.0030.01319.46
7.1.70.0030.00517.09
7.1.60.0140.01119.29
7.1.50.0100.00716.70
7.1.00.0070.05322.57
7.0.200.0000.00716.70
7.0.140.0070.07021.92
7.0.100.0130.07719.93
7.0.90.0400.09719.96
7.0.80.0070.08019.89
7.0.70.0030.07719.85
7.0.60.0170.05319.91
7.0.50.0100.07720.41
7.0.40.0100.07720.05
7.0.30.0030.06020.14
7.0.20.0100.08320.05
7.0.10.0100.06719.94
7.0.00.0100.08020.03
5.6.280.0100.07021.12
5.6.250.0030.08720.47
5.6.240.0000.08320.46
5.6.230.0130.06720.54
5.6.220.0030.07320.63
5.6.210.0130.08020.42
5.6.200.0070.08320.94
5.6.190.0170.07321.04
5.6.180.0170.06321.02
5.6.170.0100.08021.04
5.6.160.0170.06321.02
5.6.150.0070.04720.97
5.6.140.0070.07721.05
5.6.130.0170.07721.04
5.6.120.0030.06721.07
5.6.110.0030.04720.95
5.6.100.0070.08320.95
5.6.90.0100.04721.16
5.6.80.0170.07720.40
5.6.70.0130.05020.51
5.6.60.0000.04720.35
5.6.50.0130.07720.49
5.6.40.0170.06320.50
5.6.30.0130.07320.38
5.6.20.0200.06320.28
5.6.10.0030.08320.24
5.6.00.0100.05720.43
5.5.380.0030.06020.32
5.5.370.0100.08320.32
5.5.360.0100.07320.29
5.5.350.0130.07320.38
5.5.340.0130.06720.84
5.5.330.0170.07020.80
5.5.320.0030.05320.89
5.5.310.0030.05020.64
5.5.300.0130.07720.77
5.5.290.0100.07720.64
5.5.280.0070.07720.84
5.5.270.0170.06720.77
5.5.260.0130.06720.85
5.5.250.0070.07320.68
5.5.240.0030.05020.12
5.5.230.0130.04320.23
5.5.220.0100.03320.18
5.5.210.0170.07320.02
5.5.200.0000.05720.15
5.5.190.0130.06020.24
5.5.180.0070.08020.28
5.5.160.0100.07320.27
5.5.150.0000.08320.22
5.5.140.0100.07320.17
5.5.130.0170.06720.27
5.5.120.0070.06320.08
5.5.110.0030.04320.11
5.5.100.0100.08020.16
5.5.90.0030.07720.15
5.5.80.0100.07320.07
5.5.70.0100.07320.07
5.5.60.0170.06720.02
5.5.50.0070.06720.00
5.5.40.0070.07720.05
5.5.30.0070.07020.07
5.5.20.0070.07720.05
5.5.10.0130.05020.04
5.5.00.0070.05019.96
5.4.450.0070.05719.36
5.4.440.0100.08319.36
5.4.430.0070.07319.37
5.4.420.0100.07719.32
5.4.410.0100.08019.06
5.4.400.0030.05319.13
5.4.390.0070.07319.03
5.4.380.0030.04319.10
5.4.370.0070.04319.04
5.4.360.0070.07018.95
5.4.350.0070.07719.23
5.4.340.0070.05019.18
5.4.320.0100.07019.13
5.4.310.0100.07019.03
5.4.300.0130.07319.17
5.4.290.0070.06318.89
5.4.280.0100.07318.88
5.4.270.0070.08019.06
5.4.260.0070.07019.11
5.4.250.0070.07319.20
5.4.240.0130.07019.12
5.4.230.0130.06319.17
5.4.220.0070.07719.20
5.4.210.0070.04019.02
5.4.200.0100.07719.11
5.4.190.0230.06019.15
5.4.180.0070.06318.87
5.4.170.0070.07719.11
5.4.160.0100.07018.85
5.4.150.0130.07319.01
5.4.140.0070.07316.40
5.4.130.0100.05016.40
5.4.120.0130.03716.27
5.4.110.0030.06316.45
5.4.100.0070.07016.50
5.4.90.0170.05716.47
5.4.80.0070.07016.37
5.4.70.0070.06716.39
5.4.60.0030.04316.40
5.4.50.0100.07016.39
5.4.40.0100.05716.52
5.4.30.0170.06316.30
5.4.20.0000.07316.36
5.4.10.0070.05016.30
5.4.00.0070.07315.72
5.3.290.0070.03714.66
5.3.280.0200.07014.57
5.3.270.0030.08014.70
5.3.260.0100.07314.68
5.3.250.0030.04714.64
5.3.240.0070.07714.67
5.3.230.0000.04714.72
5.3.220.0130.05714.71
5.3.210.0100.06014.64
5.3.200.0100.04314.54
5.3.190.0070.07314.71
5.3.180.0130.06314.50
5.3.170.0200.07014.52
5.3.160.0000.07314.62
5.3.150.0130.05714.55
5.3.140.0100.07014.58
5.3.130.0130.04314.62
5.3.120.0070.06314.52
5.3.110.0000.07714.52
5.3.100.0030.08314.18
5.3.90.0130.06314.13
5.3.80.0170.06714.08
5.3.70.0030.06014.01
5.3.60.0070.08314.11
5.3.50.0030.07313.90
5.3.40.0000.04713.94
5.3.30.0100.03314.05
5.3.20.0000.04313.61
5.3.10.0000.05313.63
5.3.00.0030.03713.65
5.2.170.0070.04311.20
5.2.160.0000.05711.10
5.2.150.0070.02711.20
5.2.140.0100.02711.29
5.2.130.0000.04011.12
5.2.120.0070.02711.09
5.2.110.0000.03011.16
5.2.100.0070.03011.22
5.2.90.0000.03011.21
5.2.80.0030.02710.96
5.2.70.0030.03311.13
5.2.60.0000.03311.11
5.2.50.0030.02711.02
5.2.40.0000.03011.14
5.2.30.0030.02710.83
5.2.20.0000.02311.03
5.2.10.0000.02311.01
5.2.00.0030.03310.83
5.1.60.0000.0209.98
5.1.50.0070.03010.08
5.1.40.0070.02010.01
5.1.30.0000.02710.35
5.1.20.0000.02310.35
5.1.10.0070.03310.16
5.1.00.0030.0209.96
5.0.50.0030.0178.76
5.0.40.0000.0238.76
5.0.30.0030.0278.76
5.0.20.0000.0238.76
5.0.10.0100.0108.76
5.0.00.0000.0308.76
4.4.90.0030.0138.76
4.4.80.0000.0178.76
4.4.70.0000.0178.76
4.4.60.0000.0178.76
4.4.50.0030.0138.76
4.4.40.0030.0238.76
4.4.30.0000.0178.76
4.4.20.0000.0138.76
4.4.10.0070.0178.76
4.4.00.0030.0238.76
4.3.110.0000.0138.76
4.3.100.0000.0178.76
4.3.90.0000.0138.76
4.3.80.0000.0378.76
4.3.70.0030.0208.76
4.3.60.0000.0138.76
4.3.50.0000.0178.76
4.3.40.0000.0208.76
4.3.30.0030.0138.76
4.3.20.0000.0178.76
4.3.10.0000.0138.76
4.3.00.0030.0238.76

preferences:
41.17 ms | 401 KiB | 5 Q