3v4l.org

run code in 300+ PHP versions simultaneously
<?php $list_ar = array(); for($x = 0;$x < 500; $x++){ $val = generateRandomString(20); if(!in_array($val,$list_ar)){ echo $x.'=='.$val.'<br>'; array_push($list_ar,$val); } else { echo $x.'== IN ARRAY<br>'; } } function generateRandomString($length){ $characterlist = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789'; $characterlist_array = str_split($characterlist); $id = ''; for($a = 0;$a<$length;$a++){ shuffle($characterlist_array); $position = array_rand($characterlist_array, 1); $id .= $characterlist_array[$position]; } return $id; }

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)
7.0.70.0030.10321.82
7.0.60.0030.10021.55
7.0.50.0030.11322.10
7.0.40.0000.09020.07
7.0.30.0030.11019.95
7.0.20.0030.09320.10
7.0.10.0030.11320.02
7.0.00.0100.10720.11
5.6.220.0100.11020.50
5.6.210.0100.11720.67
5.6.200.0070.12021.15
5.6.190.0230.09721.13
5.6.180.0070.11721.10
5.6.170.0030.12021.12
5.6.160.0030.12021.05
5.6.150.0000.12720.99
5.6.140.0070.12020.98
5.6.130.0100.10721.15
5.6.120.0030.11021.15
5.6.110.0030.07021.02
5.6.100.0070.12021.10
5.6.90.0170.10020.95
5.6.80.0070.11320.38
5.6.70.0030.11320.52
5.6.60.0000.06320.35
5.6.50.0030.06020.36
5.6.40.0030.07020.39
5.6.30.0000.06320.43
5.6.20.0030.06320.46
5.6.10.0000.06320.46
5.6.00.0070.06720.45
5.5.360.0070.10720.57
5.5.350.0070.12020.51
5.5.340.0000.12320.84
5.5.330.0030.07720.96
5.5.320.0070.12020.92
5.5.310.0070.12320.84
5.5.300.0070.12320.80
5.5.290.0030.11720.93
5.5.280.0070.11020.86
5.5.270.0030.12320.86
5.5.260.0070.10020.80
5.5.250.0100.11720.75
5.5.240.0030.11720.25
5.5.230.0070.11720.34
5.5.220.0030.06020.28
5.5.210.0030.06320.24
5.5.200.0000.06720.32
5.5.190.0070.06320.31
5.5.180.0030.09320.27
5.5.160.0000.09320.30
5.5.150.0070.05720.29
5.5.140.0030.06320.24
5.5.130.0030.06020.27
5.5.120.0070.10320.13
5.5.110.0030.06020.26
5.5.100.0000.09720.11
5.5.90.0070.06020.11
5.5.80.0000.06320.15
5.5.70.0000.05320.19
5.5.60.0030.08020.10
5.5.50.0070.10719.99
5.5.40.0030.11320.00
5.5.30.0070.06320.08
5.5.20.0070.12020.12
5.5.10.0070.11720.09
5.5.00.0030.11020.00
5.4.450.0170.10719.20
5.4.440.0100.06319.36
5.4.430.0030.10719.42
5.4.420.0170.11719.35
5.4.410.0070.11019.25
5.4.400.0070.06319.05
5.4.390.0070.11719.16
5.4.380.0030.06019.23
5.4.370.0030.06018.85
5.4.360.0030.06019.09
5.4.350.0070.05319.05
5.4.340.0100.10719.21
5.4.320.0030.06018.86
5.4.310.0000.07719.15
5.4.300.0030.06018.94
5.4.290.0070.05719.03
5.4.280.0000.06319.03
5.4.270.0030.06019.09
5.4.260.0130.04018.85
5.4.250.0030.05719.17
5.4.240.0030.08319.02
5.4.230.0070.06719.15
5.4.220.0070.04718.94
5.4.210.0070.08019.15
5.4.200.0130.10019.22
5.4.190.0100.11318.84
5.4.180.0100.11719.11
5.4.170.0100.10019.09
5.4.160.0030.11319.02
5.4.150.0070.08319.14
5.4.140.0100.09716.49
5.4.130.0070.09016.38
5.4.120.0030.08016.30
5.4.110.0000.12016.54
5.4.100.0030.11716.44
5.4.90.0030.10316.35
5.4.80.0100.11316.31
5.4.70.0070.11716.40
5.4.60.0100.10316.56
5.4.50.0070.11016.51
5.4.40.0100.10316.42
5.4.30.0030.05716.43
5.4.20.0030.11316.53
5.4.10.0070.09016.41
5.4.00.0030.07315.94
5.3.290.0200.05014.82
5.3.280.0000.05314.68
5.3.270.0070.11314.68
5.3.260.0000.11714.82
5.3.250.0100.07014.73
5.3.240.0000.11014.67
5.3.230.0030.12014.80
5.3.220.0070.11314.62
5.3.210.0070.11014.63
5.3.200.0070.11714.76
5.3.190.0000.11714.68
5.3.180.0000.11714.61
5.3.170.0070.10314.61
5.3.160.0130.10714.59
5.3.150.0030.09014.67
5.3.140.0070.10714.79
5.3.130.0070.10014.73
5.3.120.0070.05714.73
5.3.110.0100.10314.64
5.3.100.0030.10714.05
5.3.90.0100.08014.20
5.3.80.0030.10314.03
5.3.70.0100.10014.22
5.3.60.0030.11314.12
5.3.50.0000.11314.02
5.3.40.0100.10714.12
5.3.30.0000.11013.93
5.3.20.0100.10013.90
5.3.10.0070.10313.81
5.3.00.0030.11713.75
5.2.170.0000.09312.79
5.2.160.0000.08712.79
5.2.150.0070.09712.79
5.2.140.0030.09712.79
5.2.130.0200.09012.79
5.2.120.0030.08712.79
5.2.110.0130.09312.79
5.2.100.0000.10312.79
5.2.90.0030.09312.79
5.2.80.0030.10312.79
5.2.70.0070.10312.79
5.2.60.0030.09312.79
5.2.50.0030.09012.79
5.2.40.0000.08012.79
5.2.30.0070.10012.79
5.2.20.0000.11012.79
5.2.10.0030.08012.79
5.2.00.0130.08712.79
5.1.60.0030.10312.79
5.1.50.0030.09012.79
5.1.40.0030.08312.79
5.1.30.0070.10312.79
5.1.20.0070.10012.79
5.1.10.0070.09012.79
5.1.00.0070.11312.79
5.0.50.0000.08712.79
5.0.40.0030.09712.79
5.0.30.0000.13712.79
5.0.20.0030.10012.79
5.0.10.0070.08712.79
5.0.00.0070.10712.79
4.4.90.0000.04012.79
4.4.80.0000.02712.79
4.4.70.0030.03312.79
4.4.60.0000.03712.79
4.4.50.0030.03312.79
4.4.40.0000.03712.79
4.4.30.0000.03312.79
4.4.20.0030.03312.79
4.4.10.0030.02712.79
4.4.00.0000.05712.79
4.3.110.0000.03312.79
4.3.100.0030.03012.79
4.3.90.0000.03312.79
4.3.80.0000.03312.79
4.3.70.0030.03012.79
4.3.60.0000.02712.79
4.3.50.0000.04012.79
4.3.40.0070.04312.79
4.3.30.0000.02312.79
4.3.20.0000.04012.79
4.3.10.0000.02012.79
4.3.00.0000.03312.79

preferences:
35.22 ms | 401 KiB | 5 Q