3v4l.org

run code in 300+ PHP versions simultaneously
<?php function uuid() { $x4 = function() { $n = ''; while (strlen($n) < 4) { $n = $n.mt_rand(); } return substr($n, -4); }; return sprintf( '%s-%04d-%04d-%04d-%04d%04d%04d', time(), $x4(), $x4(), $x4(), $x4(), $x4(), $x4(), $x4() ); } echo uuid();

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)
7.3.10.0070.00716.52
7.3.00.0030.00916.83
7.2.130.0060.00916.80
7.2.120.0000.01516.94
7.2.110.0070.00717.00
7.2.100.0100.00016.68
7.2.90.0040.01216.96
7.2.80.0000.01216.80
7.2.70.0110.00016.98
7.2.60.0060.00317.05
7.2.50.0090.00316.91
7.2.40.0100.00317.05
7.2.30.0030.01217.00
7.2.20.0100.00316.85
7.2.10.0030.01017.05
7.2.00.0000.01416.97
7.1.250.0030.00915.85
7.1.70.0000.00717.03
7.1.60.0040.00817.05
7.1.50.0030.00716.63
7.1.00.0030.07722.25
7.0.200.0000.01716.69
7.0.140.0000.08022.18
7.0.90.0030.04019.87
7.0.80.0030.03719.90
7.0.70.0170.04319.99
7.0.60.0070.04020.00
7.0.50.0030.03720.27
7.0.40.0000.04020.00
7.0.30.0070.09020.09
7.0.20.0030.08720.03
7.0.10.0070.06320.16
7.0.00.0070.08320.16
5.6.280.0030.07321.05
5.6.240.0170.07320.64
5.6.230.0170.05320.63
5.6.220.0030.04320.75
5.6.210.0070.04020.63
5.6.200.0000.05320.96
5.6.190.0000.05021.01
5.6.180.0030.04721.18
5.6.170.0130.07721.07
5.6.160.0100.07720.96
5.6.150.0000.06721.04
5.6.140.0070.07021.02
5.6.130.0000.08720.94
5.6.120.0070.08721.08
5.6.110.0100.08020.93
5.6.100.0070.07020.95
5.6.90.0030.04721.16
5.6.80.0100.07320.38
5.6.70.0070.06720.35
5.6.60.0030.06020.39
5.6.50.0070.07720.44
5.6.40.0000.08020.41
5.6.30.0030.05320.44
5.6.20.0100.07020.31
5.6.10.0130.06020.39
5.6.00.0030.06720.42
5.5.380.0030.04020.45
5.5.370.0070.03720.55
5.5.360.0130.03020.40
5.5.350.0000.04720.43
5.5.340.0100.02720.83
5.5.330.0000.03720.80
5.5.320.0130.07320.80
5.5.310.0030.08720.86
5.5.300.0070.06720.86
5.5.290.0100.07720.78
5.5.280.0030.07720.89
5.5.270.0130.08320.90
5.5.260.0100.07720.73
5.5.250.0100.07720.74
5.5.240.0070.07320.32
5.5.230.0030.05020.26
5.5.220.0070.07320.18
5.5.210.0000.08720.12
5.5.200.0100.07720.28
5.5.190.0130.06020.21
5.5.180.0070.08020.21
5.5.160.0070.05720.23
5.5.150.0070.08320.11
5.5.140.0100.07320.25
5.5.130.0030.07320.07
5.5.120.0000.07720.12
5.5.110.0170.07020.18
5.5.100.0200.07319.95
5.5.90.0030.08320.17
5.5.80.0030.04719.95
5.5.70.0100.06720.04
5.5.60.0070.07720.04
5.5.50.0000.06720.07
5.5.40.0070.08020.15
5.5.30.0130.05719.96
5.5.20.0100.05320.00
5.5.10.0130.06720.06
5.5.00.0100.07019.96
5.4.450.0070.07319.37
5.4.440.0070.07719.54
5.4.430.0030.06319.41
5.4.420.0100.06319.20
5.4.410.0070.06319.09
5.4.400.0000.07319.14
5.4.390.0030.07318.95
5.4.380.0100.07019.16
5.4.370.0100.07319.19
5.4.360.0200.06319.11
5.4.350.0030.06319.23
5.4.340.0070.07719.09
5.4.320.0100.05318.95
5.4.310.0100.07319.00
5.4.300.0130.07018.86
5.4.290.0070.06019.04
5.4.280.0100.07019.02
5.4.270.0070.07319.04
5.4.260.0100.07719.02
5.4.250.0070.05719.02
5.4.240.0070.07319.13
5.4.230.0070.06719.13
5.4.220.0100.07318.89
5.4.210.0030.04719.12
5.4.200.0070.07018.86
5.4.190.0030.06019.13
5.4.180.0000.06019.02
5.4.170.0030.04319.03
5.4.160.0030.07719.19
5.4.150.0070.08019.16
5.4.140.0030.07716.51
5.4.130.0000.08016.41
5.4.120.0070.06716.38
5.4.110.0100.07016.54
5.4.100.0130.06716.52
5.4.90.0070.07716.56
5.4.80.0030.08016.49
5.4.70.0030.03316.51
5.4.60.0030.06716.32
5.4.50.0100.07016.31
5.4.40.0070.04716.38
5.4.30.0030.06316.40
5.4.20.0100.07316.32
5.4.10.0030.07716.39
5.4.00.0070.06315.85
5.3.290.0000.06314.63
5.3.280.0000.08314.61
5.3.270.0070.06714.67
5.3.260.0130.06314.63
5.3.250.0030.07314.57
5.3.240.0000.06314.54
5.3.230.0130.07314.67
5.3.220.0130.06014.53
5.3.210.0130.07314.60
5.3.200.0070.07314.51
5.3.190.0030.07714.55
5.3.180.0130.07314.54
5.3.170.0030.07314.55
5.3.160.0100.07014.62
5.3.150.0030.06314.55
5.3.140.0100.06714.69
5.3.130.0100.07014.48
5.3.120.0070.07014.57
5.3.110.0070.08014.66
5.3.100.0030.08314.15
5.3.90.0000.06014.07
5.3.80.0000.08013.97
5.3.70.0030.07013.92
5.3.60.0100.07014.12
5.3.50.0000.08314.01
5.3.40.0130.03713.97
5.3.30.0030.06713.97
5.3.20.0030.07713.77
5.3.10.0030.07713.62
5.3.00.0030.07013.73
5.2.170.0100.05311.25
5.2.160.0030.06311.23
5.2.150.0000.06311.25
5.2.140.0030.06311.25
5.2.130.0030.05310.98
5.2.120.0030.06011.21
5.2.110.0000.05311.09
5.2.100.0030.04711.01
5.2.90.0070.06711.16
5.2.80.0000.06311.20
5.2.70.0070.04710.98
5.2.60.0030.05311.11
5.2.50.0070.05711.13
5.2.40.0070.06311.04
5.2.30.0070.04310.86
5.2.20.0030.06311.01
5.2.10.0070.04310.92
5.2.00.0070.06010.74
5.1.60.0000.04710.23
5.1.50.0030.03010.23
5.1.40.0030.03710.23
5.1.30.0070.02310.23
5.1.20.0000.06310.37
5.1.10.0070.02710.23
5.1.00.0030.04310.23
5.0.50.0070.02010.23
5.0.40.0070.04010.23
5.0.30.0000.06310.23
5.0.20.0000.03310.23
5.0.10.0030.03310.23
5.0.00.0000.06710.23
4.4.90.0070.02010.23
4.4.80.0030.02710.23
4.4.70.0000.04010.23
4.4.60.0000.04310.23
4.4.50.0070.03010.23
4.4.40.0100.04010.23
4.4.30.0000.01710.23
4.4.20.0030.01710.23
4.4.10.0100.02010.23
4.4.00.0000.03010.23
4.3.110.0030.02310.23
4.3.100.0030.02310.23
4.3.90.0000.03710.23
4.3.80.0030.02310.23
4.3.70.0030.03310.23
4.3.60.0030.03010.23
4.3.50.0030.02010.23
4.3.40.0070.04710.23
4.3.30.0070.02710.23
4.3.20.0030.02010.23
4.3.10.0030.03310.23
4.3.00.0000.03310.23

preferences:
36.4 ms | 401 KiB | 5 Q