3v4l.org

run code in 300+ PHP versions simultaneously
<?php function randomString($length = 6) { $pre = $suf = ""; $characters = array_merge(range('a','z'), range('0','9')); $max = count($characters) - 1; for ($i = 0; $i < $length; $i++) { $rand = mt_rand(0, $max); $pre .= $characters[$rand]; $rand = mt_rand(0, $max); $suf .= $characters[$rand]; } return $pre . time() . $suf; } 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)
7.2.00.0040.00719.52
7.1.70.0000.00717.35
7.1.60.0070.01719.70
7.1.50.0110.01116.98
7.1.00.0000.08022.33
7.0.200.0080.00315.08
7.0.140.0070.07022.19
7.0.90.0030.08721.74
7.0.80.0000.07721.95
7.0.70.0070.07721.73
7.0.60.0070.08321.87
7.0.50.0070.08322.09
7.0.40.0000.07720.07
7.0.30.0070.04020.18
7.0.20.0030.07720.13
7.0.10.0030.08720.02
7.0.00.0030.08720.07
5.6.280.0070.06721.02
5.6.240.0000.09320.63
5.6.230.0030.06020.60
5.6.220.0000.08020.56
5.6.210.0000.05720.68
5.6.200.0070.07021.08
5.6.190.0000.08721.17
5.6.180.0030.05021.13
5.6.170.0130.08721.03
5.6.160.0070.03721.18
5.6.150.0000.04321.09
5.6.140.0030.04021.14
5.6.130.0070.05321.05
5.6.120.0070.07721.08
5.6.110.0000.04321.02
5.6.100.0030.03721.10
5.6.90.0070.03721.12
5.6.80.0000.04720.41
5.6.70.0000.04020.38
5.6.60.0030.03720.41
5.6.50.0070.03320.52
5.6.40.0030.03320.29
5.6.30.0000.04020.41
5.6.20.0000.04720.31
5.6.10.0030.03720.30
5.6.00.0000.06720.37
5.5.380.0070.07320.42
5.5.370.0030.04320.51
5.5.360.0030.07720.39
5.5.350.0070.08020.38
5.5.340.0030.05020.80
5.5.330.0000.08320.80
5.5.320.0030.06020.80
5.5.310.0100.07720.89
5.5.300.0000.04320.80
5.5.290.0000.04320.93
5.5.280.0000.04020.89
5.5.270.0030.04020.86
5.5.260.0030.04020.64
5.5.250.0000.04720.61
5.5.240.0030.04020.25
5.5.230.0000.05720.30
5.5.220.0000.05720.20
5.5.210.0000.03720.24
5.5.200.0070.03720.08
5.5.190.0000.05720.11
5.5.180.0070.03720.22
5.5.160.0000.03720.25
5.5.150.0000.08020.18
5.5.140.0030.04320.23
5.5.130.0000.08020.27
5.5.120.0030.08020.17
5.5.110.0030.08020.08
5.5.100.0100.07320.16
5.5.90.0000.07720.16
5.5.80.0000.07720.09
5.5.70.0030.07019.90
5.5.60.0030.08020.16
5.5.50.0000.07320.06
5.5.40.0100.05720.09
5.5.30.0030.07320.11
5.5.20.0070.07719.99
5.5.10.0070.08020.06
5.5.00.0030.07720.07
5.4.450.0030.03719.26
5.4.440.0000.04019.45
5.4.430.0000.05319.35
5.4.420.0070.03719.36
5.4.410.0000.03719.10
5.4.400.0030.04018.88
5.4.390.0030.04319.23
5.4.380.0000.03319.16
5.4.370.0070.07019.13
5.4.360.0070.03319.05
5.4.350.0000.03719.03
5.4.340.0030.04018.91
5.4.320.0000.04019.16
5.4.310.0000.03719.12
5.4.300.0030.03319.18
5.4.290.0070.05719.13
5.4.280.0070.07018.94
5.4.270.0000.08019.13
5.4.260.0170.06019.02
5.4.250.0000.08019.16
5.4.240.0070.07018.87
5.4.230.0070.04019.08
5.4.220.0100.07319.04
5.4.210.0030.06319.02
5.4.200.0030.07719.18
5.4.190.0030.08019.22
5.4.180.0000.06319.02
5.4.170.0070.06719.08
5.4.160.0030.08019.14
5.4.150.0030.07019.10
5.4.140.0070.06316.43
5.4.130.0030.07316.32
5.4.120.0100.06316.41
5.4.110.0030.04016.48
5.4.100.0070.06716.44
5.4.90.0000.06316.39
5.4.80.0030.04316.48
5.4.70.0000.07716.50
5.4.60.0030.08016.41
5.4.50.0070.07016.43
5.4.40.0030.07016.52
5.4.30.0000.07316.48
5.4.20.0070.06716.26
5.4.10.0000.07716.44
5.4.00.0100.07015.91
5.3.290.0030.03314.61
5.3.280.0070.04714.66
5.3.270.0030.04714.73
5.3.260.0030.08014.63
5.3.250.0030.08014.54
5.3.240.0070.04014.75
5.3.230.0030.07014.57
5.3.220.0030.07314.58
5.3.210.0030.07314.52
5.3.200.0030.07314.62
5.3.190.0030.04714.50
5.3.180.0000.07714.70
5.3.170.0030.06714.54
5.3.160.0070.06314.58
5.3.150.0030.07714.54
5.3.140.0070.07014.66
5.3.130.0000.08314.57
5.3.120.0000.08314.48
5.3.110.0070.07314.53
5.3.100.0000.07714.05
5.3.90.0000.07714.04
5.3.80.0000.08014.14
5.3.70.0000.08014.14
5.3.60.0000.05013.94
5.3.50.0000.08014.00
5.3.40.0070.06713.90
5.3.30.0100.06014.01
5.3.20.0030.06713.74
5.3.10.0030.06713.55
5.3.00.0030.07013.63
5.2.170.0000.06311.10
5.2.160.0100.04011.18
5.2.150.0030.06011.25
5.2.140.0000.05011.20
5.2.130.0000.06011.25
5.2.120.0000.06011.16
5.2.110.0100.05011.03
5.2.100.0030.05711.05
5.2.90.0070.04011.20
5.2.80.0070.03711.23
5.2.70.0030.05711.02
5.2.60.0030.05311.11
5.2.50.0000.03711.08
5.2.40.0030.06010.86
5.2.30.0000.06310.91
5.2.20.0030.05310.96
5.2.10.0070.05710.97
5.2.00.0030.06010.58
5.1.60.0030.05310.41
5.1.50.0030.05010.41
5.1.40.0030.03310.41
5.1.30.0000.05710.41
5.1.20.0000.06010.41
5.1.10.0000.02710.41
5.1.00.0070.05010.41
5.0.50.0030.04310.41
5.0.40.0000.02710.41
5.0.30.0030.06310.41
5.0.20.0030.04310.41
5.0.10.0070.03710.41
5.0.00.0030.06010.41
4.4.90.0030.03010.41
4.4.80.0000.03010.41
4.4.70.0000.03310.41
4.4.60.0070.02710.41
4.4.50.0030.03310.41
4.4.40.0000.03010.41
4.4.30.0000.03710.41
4.4.20.0030.03010.41
4.4.10.0000.02710.41
4.4.00.0030.05010.41
4.3.110.0030.03010.41
4.3.100.0030.03310.41
4.3.90.0070.02710.41
4.3.80.0030.04710.41
4.3.70.0070.02710.41
4.3.60.0030.03010.41
4.3.50.0000.02710.41
4.3.40.0000.04310.41
4.3.30.0070.03010.41
4.3.20.0030.03710.41
4.3.10.0030.02710.41
4.3.00.0030.03310.41

preferences:
31.86 ms | 401 KiB | 5 Q