3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Crap { public function generateSalt($len = 32) { $salt = ""; for ($i = 0; $i < $len; $i++) { $index = rand(0, (strlen($this->chars) - 1)); $salt .= $this->chars[$index]; } return $salt; } } $crap = new Crap(); echo $crap->generateSalt();

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)
7.1.70.0000.00816.96
7.1.60.0030.02019.46
7.1.50.0030.02016.65
7.1.00.0000.08022.30
7.0.200.0030.00616.88
7.0.140.0000.07722.01
7.0.60.0070.08719.91
7.0.50.0030.05317.89
7.0.40.0070.05020.32
7.0.30.0570.07020.07
7.0.20.0130.05020.20
7.0.10.0230.05720.16
7.0.00.0130.08020.05
5.6.280.0030.07021.11
5.6.210.0070.08020.50
5.6.200.0070.07718.27
5.6.190.0030.04320.52
5.6.180.3470.05020.54
5.6.170.0130.07720.43
5.6.160.0100.08020.46
5.6.150.0130.06718.20
5.6.140.0030.05318.14
5.6.130.0030.04318.13
5.6.120.0070.04021.14
5.6.110.0100.09021.02
5.6.100.0170.07321.13
5.6.90.0100.07721.07
5.6.80.0070.08320.36
5.6.70.0300.06720.36
5.5.350.0300.07020.43
5.5.340.0070.07717.98
5.5.330.0000.06020.18
5.5.320.0500.06720.48
5.5.310.0330.07320.27
5.5.300.0070.04717.95
5.5.290.0030.07717.96
5.5.280.0070.08720.80
5.5.270.0030.05020.84
5.5.260.0100.08320.77
5.5.250.0130.05320.80
5.5.240.0100.07720.16
5.4.450.0170.06319.47
5.4.440.0270.07019.48
5.4.430.0230.05719.16
5.4.420.0200.03719.43
5.4.410.0300.06719.40
5.4.400.0100.04719.10
5.4.390.0270.03018.87
5.4.380.0130.04719.16
5.4.370.0200.04719.06
5.4.360.0230.03719.06
5.4.350.0200.03719.06
5.4.340.0370.04019.21
5.4.320.0230.05019.00
5.4.310.0170.04719.16
5.4.300.0170.05319.12
5.4.290.0100.04719.05
5.4.280.0300.07019.20
5.4.270.0070.05319.05
5.4.260.0170.05019.16
5.4.250.0270.04019.11
5.4.240.0300.06719.08
5.4.230.0230.03319.05
5.4.220.0130.04319.19
5.4.210.0200.03718.85
5.4.200.0200.04018.83
5.4.190.0230.07318.97
5.4.180.0230.03319.08
5.4.170.0170.05019.15
5.4.160.0200.03719.10
5.4.150.0170.04019.21
5.4.140.0200.05016.33
5.4.130.0270.07016.51
5.4.120.0200.04716.30
5.4.110.0230.04016.40
5.4.100.0270.04016.56
5.4.90.0300.06716.25
5.4.80.0300.04016.52
5.4.70.0270.03716.28
5.4.60.0270.07716.43
5.4.50.0270.04716.16
5.4.40.0270.03716.38
5.4.30.0330.05316.32
5.4.20.0200.04016.42
5.4.10.0230.03716.16
5.4.00.0200.03715.84
5.3.290.0200.04714.64
5.3.280.0270.04314.67
5.3.270.0270.03314.68
5.3.260.0270.03714.57
5.3.250.0200.08014.72
5.3.240.0400.04314.58
5.3.230.0200.04314.50
5.3.220.0170.04314.53
5.3.210.0230.04014.64
5.3.200.0230.04314.57
5.3.190.0370.05314.47
5.3.180.0230.03714.55
5.3.170.0270.04014.79
5.3.160.0300.06714.55
5.3.150.0300.04714.57
5.3.140.0230.05014.53
5.3.130.0300.03314.46
5.3.120.0330.02714.45
5.3.110.0330.06314.51
5.3.100.0300.03713.95
5.3.90.0270.03713.95
5.3.80.0270.07014.03
5.3.70.0200.05313.93
5.3.60.0300.06314.07
5.3.50.0300.06714.06
5.3.40.0230.06313.85
5.3.30.0300.05313.96
5.3.20.0230.04013.70
5.3.10.0270.03013.55
5.3.00.0270.06313.56
5.2.170.0300.04712.91
5.2.160.0170.03312.91
5.2.150.0170.03712.91
5.2.140.0230.03012.91
5.2.130.0300.05012.91
5.2.120.0270.05712.91
5.2.110.0270.04312.91
5.2.100.0300.05012.91
5.2.90.0300.05012.91
5.2.80.0270.06012.91
5.2.70.0230.04712.91
5.2.60.0270.05712.91
5.2.50.0170.04312.91
5.2.40.0170.04312.91
5.2.30.0230.05712.91
5.2.20.0200.05712.91
5.2.10.0230.04312.91
5.2.00.0270.03012.91
5.1.60.0230.02012.91
5.1.50.0170.02312.91
5.1.40.0170.04712.91
5.1.30.0200.05712.91
5.1.20.0200.05012.91
5.1.10.0200.03712.91
5.1.00.0170.04712.91
5.0.50.0100.03712.91
5.0.40.0070.02312.91
5.0.30.0100.04712.91
5.0.20.0130.04012.91
5.0.10.0130.03712.91
5.0.00.0030.05312.91
4.4.90.0070.03712.91
4.4.80.0170.02312.91
4.4.70.0100.03712.91
4.4.60.0100.02012.91
4.4.50.0030.02312.91
4.4.40.0100.05012.91
4.4.30.0130.02312.91
4.4.20.0100.02712.91
4.4.10.0100.02012.91
4.4.00.0170.04312.91
4.3.110.0130.03012.91
4.3.100.0100.02312.91
4.3.90.0100.03312.91
4.3.80.0070.03312.91
4.3.70.0100.03312.91
4.3.60.0070.01712.91
4.3.50.0070.03712.91
4.3.40.0100.04712.91
4.3.30.0070.02312.91
4.3.20.0070.02712.91
4.3.10.0030.02012.91
4.3.00.0100.02712.91

preferences:
35.87 ms | 401 KiB | 5 Q