3v4l.org

run code in 300+ PHP versions simultaneously
<?php $length = 8; $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890'; { $chars_length = (strlen($chars) - 1); $string = $chars{rand(0, $chars_length)}; for ($i = 1; $i < $length; $i = strlen($string)) { $r = $chars{rand(0, $chars_length)}; if ($r != $string{$i - 1}) { $string .= $r; } } echo $string; }

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)
7.4.00.0070.01114.64
7.3.120.0000.01514.64
7.3.110.0090.00914.66
7.3.100.0070.00714.84
7.3.90.0060.00914.96
7.3.80.0080.00414.99
7.3.70.0090.00614.81
7.3.60.0130.00314.94
7.3.50.0040.01115.01
7.3.40.0090.00314.78
7.3.30.0150.00014.44
7.3.20.0110.00416.70
7.3.10.0050.00816.56
7.3.00.0050.00816.55
7.2.250.0100.01014.99
7.2.240.0000.02015.20
7.2.230.0070.00715.20
7.2.220.0030.01415.24
7.2.210.0060.00615.03
7.2.200.0040.01115.22
7.2.190.0070.01015.15
7.2.180.0100.00315.05
7.2.170.0070.01015.03
7.2.130.0080.00416.74
7.2.120.0040.00716.77
7.2.110.0060.00616.68
7.2.100.0030.00716.61
7.2.90.0040.00816.48
7.2.80.0120.00416.99
7.2.70.0080.00416.84
7.2.60.0030.01316.95
7.2.50.0000.01316.97
7.2.40.0030.00916.69
7.2.30.0030.00916.55
7.2.20.0030.01316.88
7.2.10.0040.00817.09
7.2.00.0070.00918.11
7.1.330.0090.00615.65
7.1.320.0060.00615.91
7.1.310.0140.00415.73
7.1.300.0080.00415.81
7.1.290.0040.01115.93
7.1.280.0060.00915.82
7.1.270.0060.00615.77
7.1.260.0090.00315.79
7.1.250.0070.00715.78
7.1.70.0050.00517.28
7.1.60.0130.01019.82
7.1.50.0060.01616.93
7.1.00.0070.07322.44
7.0.200.0000.01016.55
7.0.140.0000.07722.09
7.0.60.0070.03719.91
7.0.50.0100.03317.84
7.0.40.0030.05020.40
7.0.30.0370.06020.13
7.0.20.0270.06720.04
7.0.10.0000.07720.20
7.0.00.0070.08020.09
5.6.280.0000.07721.15
5.6.210.0100.08020.62
5.6.200.0130.08018.11
5.6.190.0100.08720.45
5.6.180.0130.07320.64
5.6.170.0300.07320.52
5.6.160.0030.04020.48
5.6.150.0070.08318.18
5.6.140.0070.08318.14
5.6.130.0000.04718.18
5.6.120.0070.08320.96
5.6.110.0100.07320.98
5.6.100.0130.08020.97
5.6.90.0030.06720.97
5.6.80.0030.04020.41
5.6.70.4500.04020.36
5.5.350.0170.08020.39
5.5.340.0100.07017.95
5.5.330.0000.05320.06
5.5.320.0400.06320.41
5.5.310.0230.04320.31
5.5.300.0100.03717.88
5.5.290.0100.06017.98
5.5.280.0200.07320.96
5.5.270.0100.07320.72
5.5.260.0100.07320.86
5.5.250.0170.06020.68
5.5.240.0270.07020.23
5.4.450.0170.05719.63
5.4.440.0230.04719.45
5.4.430.0070.05719.58
5.4.420.0070.05719.13
5.4.410.0530.05319.46
5.4.400.0100.05318.46
5.4.390.0000.06318.73
5.4.380.0230.05318.50
5.4.370.0200.05318.60
5.4.360.0100.05718.69
5.4.350.0230.05018.53
5.4.340.0170.05318.48
5.4.320.0070.04112.46
5.4.310.0080.04312.45
5.4.300.0130.03512.45
5.4.290.0100.04212.45
5.4.280.0060.03912.35
5.4.270.0100.06018.96
5.4.260.0170.05718.92
5.4.250.0170.07018.98
5.4.240.0100.05318.88
5.4.230.0100.07018.94
5.4.220.0100.09018.85
5.4.210.0130.06318.79
5.4.200.0130.07018.79
5.4.190.0130.06018.99
5.4.180.0070.06019.03
5.4.170.0070.07719.00
5.4.160.0170.07019.00
5.4.150.0070.06019.16
5.4.140.0100.06716.27
5.4.130.0130.05016.37
5.4.120.0070.06316.32
5.4.110.0100.07016.31
5.4.100.0230.04716.36
5.4.90.0100.06716.36
5.4.80.0100.06016.34
5.4.70.0070.06316.51
5.4.60.0100.05716.50
5.4.50.0070.06716.33
5.4.40.0100.05016.66
5.4.30.0100.05716.28
5.4.20.0070.05316.27
5.4.10.0200.05716.56
5.4.00.0130.05015.71
5.3.290.0060.04212.80
5.3.280.0100.06014.68
5.3.270.0070.08014.53
5.3.260.0130.06314.75
5.3.250.0070.06014.69
5.3.240.0070.06314.75
5.3.230.0070.06014.68
5.3.220.0170.07014.61
5.3.210.0070.07714.61
5.3.200.0030.06314.56
5.3.190.0030.05714.57
5.3.180.0100.06714.65
5.3.170.0130.05714.54
5.3.160.0130.07014.63
5.3.150.0100.05714.70
5.3.140.0100.07014.75
5.3.130.0100.07714.55
5.3.120.0100.06014.61
5.3.110.0100.05314.54
5.3.100.0170.05314.20
5.3.90.0000.06314.13
5.3.80.0200.05314.05
5.3.70.0100.05714.00
5.3.60.0130.06013.98
5.3.50.0070.07714.04
5.3.40.0030.06713.93
5.3.30.0170.04714.07
5.3.20.0070.06713.63
5.3.10.0130.05313.82
5.3.00.0130.05013.70
5.2.170.0100.04310.95
5.2.160.0100.04311.27
5.2.150.0070.06011.25
5.2.140.0170.05311.13
5.2.130.0070.06011.27
5.2.120.0030.06011.09
5.2.110.0130.04710.91
5.2.100.0070.04311.02
5.2.90.0030.05711.14
5.2.80.0070.04711.02
5.2.70.0200.05311.28
5.2.60.0100.04311.28
5.2.50.0130.04011.13
5.2.40.0130.03311.21
5.2.30.0070.04310.95
5.2.20.0100.03711.07
5.2.10.0070.05311.14
5.2.00.0100.05010.71
5.1.60.0070.03310.20
5.1.50.0070.05010.14
5.1.40.0030.03710.13
5.1.30.0130.04710.61
5.1.20.0070.05010.35
5.1.10.0000.04710.36
5.1.00.0170.03710.14
5.0.50.0100.0308.57
5.0.40.0030.0338.53
5.0.30.0070.0538.42
5.0.20.0130.0378.42
5.0.10.0100.0278.42
5.0.00.0070.0478.42
4.4.90.0070.0308.42
4.4.80.0000.0238.42
4.4.70.0030.0238.42
4.4.60.0000.0378.42
4.4.50.0070.0278.42
4.4.40.0100.0378.42
4.4.30.0070.0208.42
4.4.20.0030.0308.42
4.4.10.0030.0238.42
4.4.00.0070.0408.42
4.3.110.0000.0308.42
4.3.100.0030.0278.42
4.3.90.0030.0238.42
4.3.80.0000.0438.42
4.3.70.0100.0238.42
4.3.60.0030.0238.42
4.3.50.0000.0338.42
4.3.40.0000.0408.42
4.3.30.0030.0208.42
4.3.20.0030.0338.42
4.3.10.0030.0238.42
4.3.00.0030.0207.72

preferences:
33.98 ms | 401 KiB | 5 Q