3v4l.org

run code in 300+ PHP versions simultaneously
<?php function keygen($length=10) { $key = ''; list($usec, $sec) = explode(' ', microtime()); mt_srand((float) $sec + ((float) $usec * 100000)); $inputs = array_merge(range('z','a'),range(0,9),range('A','Z')); for($i=0; $i<$length; $i++) { $key .= $inputs{mt_rand(0,61)}; } return $key; } echo keygen();

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)
7.2.00.0000.00919.48
7.1.70.0030.01317.19
7.1.60.0080.00517.17
7.1.50.0100.01417.05
7.1.00.0000.07022.46
7.0.200.0050.00516.69
7.0.140.0070.06322.15
7.0.100.0070.08019.96
7.0.90.0030.06319.92
7.0.80.0100.06719.91
7.0.70.0370.08319.90
7.0.60.0100.07719.91
7.0.50.0170.06020.26
7.0.40.0130.07320.06
7.0.30.0070.08019.90
7.0.20.0130.08720.12
7.0.10.0070.07320.04
7.0.00.0100.07720.07
5.6.280.0100.08720.91
5.6.250.0070.08720.77
5.6.240.0130.07720.70
5.6.230.0030.08720.50
5.6.220.0030.09020.66
5.6.210.0070.08320.76
5.6.200.0000.05721.03
5.6.190.0000.07321.13
5.6.180.0100.08021.10
5.6.170.0100.07321.13
5.6.160.0130.05021.02
5.6.150.0070.08321.07
5.6.140.0070.06021.07
5.6.130.0070.08320.94
5.6.120.0070.08021.03
5.6.110.0030.05321.02
5.6.100.0070.07721.06
5.6.90.0030.07320.91
5.6.80.0100.08020.45
5.6.70.0070.07320.32
5.6.60.0170.07020.44
5.6.50.0130.05320.42
5.6.40.0100.07720.45
5.6.30.0000.07720.25
5.6.20.0130.06020.36
5.6.10.0230.06720.28
5.6.00.0100.07320.44
5.5.380.0130.07320.41
5.5.370.0030.08320.43
5.5.360.0100.06320.48
5.5.350.0100.07320.42
5.5.340.0170.06720.61
5.5.330.0100.07320.92
5.5.320.0100.04720.77
5.5.310.0100.05720.87
5.5.300.0070.08320.88
5.5.290.0130.08320.88
5.5.280.0100.08320.90
5.5.270.0070.08020.71
5.5.260.0130.04720.91
5.5.250.0170.07720.63
5.5.240.0130.06720.25
5.5.230.0070.04720.24
5.5.220.0030.09020.23
5.5.210.0130.07320.27
5.5.200.0070.04319.98
5.5.190.0130.07320.21
5.5.180.0100.07320.27
5.5.160.0170.03720.26
5.5.150.0130.07320.11
5.5.140.0130.07720.09
5.5.130.0000.08020.16
5.5.120.0030.08020.24
5.5.110.0100.06720.06
5.5.100.0200.06720.05
5.5.90.0030.07720.06
5.5.80.0070.06720.05
5.5.70.0070.07720.09
5.5.60.0030.08020.05
5.5.50.0100.07020.08
5.5.40.0070.07020.03
5.5.30.0130.06020.03
5.5.20.0000.05020.04
5.5.10.0070.07719.93
5.5.00.0030.07320.11
5.4.450.0030.07319.55
5.4.440.0100.04319.23
5.4.430.0100.07719.41
5.4.420.0000.08319.50
5.4.410.0100.07719.32
5.4.400.0100.07319.15
5.4.390.0000.06319.23
5.4.380.0070.04719.15
5.4.370.0130.05719.13
5.4.360.0070.05019.10
5.4.350.0100.06719.03
5.4.340.0130.07319.14
5.4.320.0170.07019.15
5.4.310.0070.05719.13
5.4.300.0070.07718.84
5.4.290.0130.07019.13
5.4.280.0130.07019.02
5.4.270.0100.07718.87
5.4.260.0030.08018.87
5.4.250.0130.07319.13
5.4.240.0100.07319.23
5.4.230.0100.07318.84
5.4.220.0070.04319.04
5.4.210.0030.05319.13
5.4.200.0100.07319.13
5.4.190.0070.08019.02
5.4.180.0100.07719.13
5.4.170.0130.03719.15
5.4.160.0030.06719.04
5.4.150.0130.07019.03
5.4.140.0170.06016.38
5.4.130.0100.07016.36
5.4.120.0070.07716.39
5.4.110.0030.07016.36
5.4.100.0030.04716.50
5.4.90.0100.06316.42
5.4.80.0130.04716.47
5.4.70.0130.07016.45
5.4.60.0000.05716.30
5.4.50.0070.06316.47
5.4.40.0130.06316.46
5.4.30.0070.08016.39
5.4.20.0170.06316.36
5.4.10.0070.07316.42
5.4.00.0030.08015.80
5.3.290.0030.07014.80
5.3.280.0070.06714.66
5.3.270.0070.05314.73
5.3.260.0130.05014.61
5.3.250.0100.06714.70
5.3.240.0130.03714.75
5.3.230.0030.06314.70
5.3.220.0070.06714.71
5.3.210.0070.06714.64
5.3.200.0170.06014.64
5.3.190.0000.08014.60
5.3.180.0030.07014.63
5.3.170.0000.08014.66
5.3.160.0030.04314.66
5.3.150.0000.04314.53
5.3.140.0070.07714.59
5.3.130.0000.08014.68
5.3.120.0100.03714.69
5.3.110.0030.06014.68
5.3.100.0100.03714.00
5.3.90.0030.04014.16
5.3.80.0030.07714.00
5.3.70.0030.05314.16
5.3.60.0100.07314.00
5.3.50.0070.06713.88
5.3.40.0030.07713.94
5.3.30.0070.07013.94
5.3.20.0070.07013.62
5.3.10.0100.06713.68
5.3.00.0100.07013.77
5.2.170.0000.05311.07
5.2.160.0030.06311.22
5.2.150.0030.06311.21
5.2.140.0070.06011.18
5.2.130.0030.04711.13
5.2.120.0000.06311.14
5.2.110.0070.05311.25
5.2.100.0030.03011.24
5.2.90.0070.06011.18
5.2.80.0070.05311.02
5.2.70.0070.05311.04
5.2.60.0070.03011.12
5.2.50.0070.05710.96
5.2.40.0030.03311.12
5.2.30.0030.06011.01
5.2.20.0030.07011.09
5.2.10.0030.06710.87
5.2.00.0070.06010.77
5.1.60.0070.05310.07
5.1.50.0070.04710.07
5.1.40.0030.05310.07
5.1.30.0170.04010.31
5.1.20.0030.06310.47
5.1.10.0000.05310.07
5.1.00.0100.05010.17
5.0.50.0030.0478.70
5.0.40.0070.0438.32
5.0.30.0000.0478.29
5.0.20.0030.0378.21
5.0.10.0030.0408.22
5.0.00.0000.0678.24
4.4.90.0030.0338.21
4.4.80.0070.0308.21
4.4.70.0030.0308.21
4.4.60.0070.0138.21
4.4.50.0000.0408.21
4.4.40.0000.0478.21
4.4.30.0070.0338.21
4.4.20.0000.0208.21
4.4.10.0000.0378.21
4.4.00.0000.0538.21
4.3.110.0000.0378.21
4.3.100.0070.0308.21
4.3.90.0000.0378.21
4.3.80.0000.0438.21
4.3.70.0000.0378.21
4.3.60.0030.0208.21
4.3.50.0000.0338.21
4.3.40.0030.0378.21
4.3.30.0030.0208.21
4.3.20.0000.0408.21
4.3.10.0000.0408.21
4.3.00.0030.0378.21

preferences:
36.4 ms | 400 KiB | 5 Q