3v4l.org

run code in 300+ PHP versions simultaneously
<?php function randomString($length = 6) { $str = ""; $characters = array_merge(range('a','z'), range('0','9')); $max = count($characters) - 1; for ($i = 0; $i < $length; $i++) { $rand = mt_rand(0, $max); $str .= $characters[$rand]; } return $str . time(); } echo randomString();

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)
7.2.00.0100.00319.18
7.1.70.0040.00417.19
7.1.60.0150.00919.70
7.1.50.0070.01017.07
7.1.00.0030.07722.48
7.0.200.0230.01014.64
7.0.140.0130.06321.92
7.0.80.0070.04719.96
7.0.70.0030.07719.90
7.0.60.0230.05319.88
7.0.50.0100.08320.30
7.0.40.0170.03720.08
7.0.30.0070.08320.03
7.0.20.0070.08720.03
7.0.10.0170.07320.07
7.0.00.0000.06020.04
5.6.280.0030.07321.11
5.6.230.0070.06020.57
5.6.220.0100.06020.67
5.6.210.0100.06320.58
5.6.200.0170.06321.11
5.6.190.0170.07321.04
5.6.180.0000.06721.11
5.6.170.0130.06321.11
5.6.160.0070.08720.96
5.6.150.0100.07720.95
5.6.140.0100.08321.06
5.6.130.0170.05721.00
5.6.120.0200.07021.17
5.6.110.0200.03320.94
5.6.100.0070.06721.06
5.6.90.0070.07721.02
5.6.80.0100.07020.32
5.6.70.0130.07020.52
5.6.60.0170.06020.30
5.6.50.0100.07720.52
5.6.40.0170.07320.40
5.6.30.0070.08320.41
5.6.20.0070.08020.30
5.6.10.0070.08720.39
5.6.00.0070.08020.36
5.5.370.0070.07720.36
5.5.360.0070.06320.36
5.5.350.0030.08720.34
5.5.340.0100.08720.89
5.5.330.0170.07320.76
5.5.320.0130.07720.79
5.5.310.0170.07320.89
5.5.300.0270.07020.82
5.5.290.0000.09320.76
5.5.280.0070.07720.89
5.5.270.0070.04320.89
5.5.260.0200.05320.80
5.5.250.0000.05020.68
5.5.240.0000.08720.16
5.5.230.0030.08720.24
5.5.220.0130.07320.17
5.5.210.0100.07320.27
5.5.200.0100.07320.11
5.5.190.0130.07020.14
5.5.180.0130.06720.25
5.5.160.0100.07720.28
5.5.150.0030.08320.28
5.5.140.0200.07020.28
5.5.130.0170.06720.27
5.5.120.0070.05020.12
5.5.110.0030.06720.21
5.5.100.0000.08320.09
5.5.90.0070.07720.16
5.5.80.0030.06719.96
5.5.70.0070.07720.06
5.5.60.0170.07019.96
5.5.50.0100.06720.14
5.5.40.0200.06020.05
5.5.30.0200.06320.09
5.5.20.0070.07320.12
5.5.10.0130.06320.03
5.5.00.0130.05019.96
5.4.450.0070.07019.56
5.4.440.0170.06719.35
5.4.430.0070.08019.35
5.4.420.0100.08319.37
5.4.410.0100.08719.32
5.4.400.0030.09019.16
5.4.390.0100.08019.05
5.4.380.0070.05019.04
5.4.370.0070.06319.21
5.4.360.0130.07019.03
5.4.350.0070.08019.23
5.4.340.0170.07018.89
5.4.320.0100.07019.05
5.4.310.0070.08019.21
5.4.300.0100.07718.90
5.4.290.0200.04319.22
5.4.280.0070.08019.02
5.4.270.0070.06019.02
5.4.260.0100.06719.09
5.4.250.0030.07319.04
5.4.240.0100.05319.15
5.4.230.0130.07018.94
5.4.220.0100.05719.02
5.4.210.0130.06319.04
5.4.200.0130.07719.19
5.4.190.0100.07319.17
5.4.180.0070.05019.12
5.4.170.0170.06318.99
5.4.160.0130.05019.01
5.4.150.0000.07718.88
5.4.140.0070.08016.45
5.4.130.0100.07316.33
5.4.120.0130.06016.19
5.4.110.0100.06316.35
5.4.100.0070.04716.51
5.4.90.0230.06016.35
5.4.80.0000.07316.32
5.4.70.0030.05316.34
5.4.60.0030.07016.46
5.4.50.0130.05316.45
5.4.40.0070.06716.47
5.4.30.0100.06716.44
5.4.20.0030.06716.30
5.4.10.0070.08016.45
5.4.00.0170.04015.86
5.3.290.0030.07714.68
5.3.280.0100.07714.62
5.3.270.0000.08314.67
5.3.260.0030.08014.61
5.3.250.0070.07014.55
5.3.240.0070.08014.66
5.3.230.0130.06314.62
5.3.220.0030.08014.57
5.3.210.0130.06314.63
5.3.200.0130.07014.66
5.3.190.0030.04314.62
5.3.180.0000.04314.55
5.3.170.0100.06314.70
5.3.160.0130.07314.51
5.3.150.0100.07314.63
5.3.140.0030.08014.62
5.3.130.0070.06714.61
5.3.120.0000.08014.60
5.3.110.0000.08014.62
5.3.100.0070.07014.18
5.3.90.0100.07013.99
5.3.80.0130.07013.96
5.3.70.0130.07314.06
5.3.60.0200.06314.09
5.3.50.0100.07314.01
5.3.40.0130.06713.96
5.3.30.0230.05713.93
5.3.20.0100.07013.70
5.3.10.0070.04713.68
5.3.00.0070.07313.56
5.2.170.0070.05711.16
5.2.160.0070.06311.05
5.2.150.0070.04311.05
5.2.140.0030.06311.20
5.2.130.0100.05311.16
5.2.120.0170.04311.17
5.2.110.0100.03311.15
5.2.100.0100.04711.13
5.2.90.0070.02711.13
5.2.80.0030.04011.13
5.2.70.0070.02711.11
5.2.60.0030.06711.13
5.2.50.0070.02711.07
5.2.40.0030.03011.01
5.2.30.0100.05711.11
5.2.20.0070.02710.99
5.2.10.0030.06010.93
5.2.00.0100.05310.89
5.1.60.0000.06010.89
5.1.50.0030.03310.89
5.1.40.0000.04710.89
5.1.30.0070.05710.89
5.1.20.0030.05310.89
5.1.10.0070.04310.89
5.1.00.0070.05310.89
5.0.50.0030.03310.89
5.0.40.0000.04710.89
5.0.30.0030.06010.89
5.0.20.0000.02310.89
5.0.10.0100.02010.89
5.0.00.0000.03710.89
4.4.90.0030.01310.89
4.4.80.0030.01310.89
4.4.70.0000.04010.89
4.4.60.0070.02010.89
4.4.50.0030.01710.89
4.4.40.0030.03310.89
4.4.30.0030.02310.89
4.4.20.0070.02710.89
4.4.10.0030.03310.89
4.4.00.0130.04310.89
4.3.110.0000.04010.89
4.3.100.0030.03310.89
4.3.90.0000.02710.89
4.3.80.0030.04310.89
4.3.70.0000.03310.89
4.3.60.0030.03710.89
4.3.50.0030.03710.89
4.3.40.0070.04310.89
4.3.30.0000.03310.89
4.3.20.0000.03010.89
4.3.10.0000.03710.89
4.3.00.0030.03010.89

preferences:
37.98 ms | 401 KiB | 5 Q