3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo random_string(32,0,0); function random_string($charCount = 8, $mode = 0, $capsOnly = 0) { /* 0 = alphanumeric 1 = letters only 2 = numbers only */ $chars_alpha_cap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; $chars_alpha_low = 'abcdefghijklmnopqrstuvwxyz'; $chars_num = '0123456789'; if ($capsonly) { $characters_a = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; } switch ($mode) { case 1: $chars = $chars_alpha_cap . $chars_alpha_low; break; case 2: $chars = $chars_num; break; default: $chars = $chars_alpha_cap . $chars_alpha_low . $chars_num; } for ($i = 0; $i < $charCount; $i++) { $rand .= $chars[mt_rand(0, strlen($characters) - 1)]; } return $rand; }

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)
7.3.10.0030.01216.70
7.3.00.0070.00716.48
7.2.130.0000.01917.09
7.2.120.0120.00317.07
7.2.110.0000.01416.77
7.2.100.0110.00316.95
7.2.90.0070.00716.78
7.2.80.0070.01116.79
7.2.70.0040.00716.92
7.2.60.0090.00617.00
7.2.50.0060.01017.05
7.2.40.0060.01016.88
7.2.30.0120.00317.09
7.2.20.0060.00917.10
7.2.10.0120.00616.90
7.2.00.0050.00818.07
7.1.250.0070.00415.86
7.1.70.0000.00817.18
7.1.60.0070.01719.40
7.1.50.0250.00934.88
7.1.00.0130.06322.33
7.0.200.0140.00414.80
7.0.140.0030.07322.13
7.0.120.0070.04722.13
7.0.60.0030.05719.82
7.0.50.0070.05017.97
7.0.40.0430.07320.34
7.0.30.0430.07320.09
7.0.20.0400.04020.10
7.0.10.0430.05720.07
7.0.00.0300.04320.11
5.6.210.0030.07020.65
5.6.200.0030.08018.17
5.6.190.0330.07720.54
5.6.180.0500.07020.58
5.6.170.0370.08320.39
5.6.160.0500.07020.52
5.6.150.0430.08020.48
5.6.140.0330.03720.37
5.6.130.0270.04320.30
5.6.120.0170.04320.32
5.6.110.0030.04720.29
5.6.100.0300.03720.20
5.6.90.0370.04320.35
5.6.80.0200.04319.72
5.6.70.0200.04319.69
5.6.60.0270.03719.73
5.6.50.0230.04019.68
5.6.40.0270.03719.56
5.6.30.0230.04319.68
5.6.20.0270.03319.63
5.6.10.0230.04319.71
5.6.00.0230.03719.70
5.5.350.0370.07720.36
5.5.340.0130.06317.98
5.5.330.0200.04720.32
5.5.320.0430.03320.36
5.5.310.0400.08020.35
5.5.300.0330.04320.15
5.5.290.0230.04020.15
5.5.280.0170.04020.06
5.5.270.0170.03720.10
5.5.260.0300.03320.17
5.5.250.0230.04019.93
5.5.240.0230.04019.54
5.5.230.0200.04319.50
5.5.220.0230.04019.56
5.5.210.0230.04019.45
5.5.200.0300.04319.46
5.5.190.0270.03719.46
5.5.180.0200.04019.50
5.5.160.0200.04019.42
5.5.150.0270.04319.46
5.5.140.0270.04319.38
5.5.130.0230.05719.35
5.5.120.0230.06019.41
5.5.110.0400.04319.45
5.5.100.0330.05719.41
5.5.90.0270.07319.36
5.5.80.0300.04319.38
5.5.70.0400.07719.36
5.5.60.0230.04719.39
5.5.50.0300.05019.31
5.5.40.0000.04719.57
5.5.30.0000.04719.43
5.5.20.0370.07019.34
5.5.10.0200.04319.41
5.5.00.0300.03719.45
5.4.450.0330.03319.43
5.4.440.0130.04019.38
5.4.430.0170.04019.37
5.4.420.0230.03719.60
5.4.410.0370.04019.25
5.4.400.0270.03318.90
5.4.390.0230.03719.10
5.4.380.0270.03319.05
5.4.370.0230.03719.15
5.4.360.0300.03019.10
5.4.350.0230.03719.05
5.4.340.0270.03319.10
5.4.320.0200.04719.04
5.4.310.0200.05018.96
5.4.300.0330.06719.03
5.4.290.0370.06718.89
5.4.280.0330.07019.15
5.4.270.0370.05719.27
5.4.260.0330.04019.12
5.4.250.0330.07018.95
5.4.240.0430.06019.03
5.4.230.0400.04019.27
5.4.220.0270.04019.01
5.4.210.0330.04719.09
5.4.200.0130.07019.14
5.4.190.0400.06719.13
5.4.180.0170.04319.02
5.4.170.0230.04019.05
5.4.160.0230.03718.94
5.4.150.0230.07319.01
5.4.140.0230.05016.60
5.4.130.0270.07016.30
5.4.120.0300.03716.40
5.4.110.0370.05716.38
5.4.100.0370.07016.30
5.4.90.0370.05716.45
5.4.80.0330.04316.39
5.4.70.0500.04316.42
5.4.60.0330.05316.21
5.4.50.0370.05716.23
5.4.40.0300.04316.45
5.4.30.0370.04316.53
5.4.20.0330.04316.30
5.4.10.0400.05016.36
5.4.00.0370.05715.93
5.3.290.0270.04714.71
5.3.280.0400.06014.56
5.3.270.0230.04014.70
5.3.260.0230.03714.60
5.3.250.0300.03014.45
5.3.240.0200.04314.55
5.3.230.0270.03714.65
5.3.220.0230.07314.55
5.3.210.0300.05014.55
5.3.200.0430.05714.57
5.3.190.0300.07714.61
5.3.180.0230.04714.57
5.3.170.0330.07014.62
5.3.160.0300.04014.62
5.3.150.0370.05314.77
5.3.140.0400.06714.51
5.3.130.0330.07014.58
5.3.120.0430.06014.51
5.3.110.0430.06714.57
5.3.100.0470.06014.00
5.3.90.0330.03714.09
5.3.80.0370.07014.02
5.3.70.0500.06014.05
5.3.60.0370.06014.11
5.3.50.0330.06314.02
5.3.40.0270.03713.84
5.3.30.0430.03313.96
5.3.20.0470.06013.73
5.3.10.0430.03713.68
5.3.00.0430.06313.68
5.2.170.0270.04011.21
5.2.160.0300.05711.20
5.2.150.0270.04011.18
5.2.140.0370.05711.17
5.2.130.0300.04011.20
5.2.120.0400.05311.14
5.2.110.0300.03011.14
5.2.100.0400.03311.17
5.2.90.0330.04711.13
5.2.80.0370.05011.10
5.2.70.0330.05710.94
5.2.60.0400.04311.02
5.2.50.0370.04311.02
5.2.40.0200.05311.00
5.2.30.0230.06010.98
5.2.20.0200.03311.17
5.2.10.0300.05710.83
5.2.00.0300.05010.72
5.1.60.0270.0509.96
5.1.50.0300.05010.09
5.1.40.0300.02310.04
5.1.30.0330.04710.34
5.1.20.0270.04010.41
5.1.10.0200.0279.90
5.1.00.0230.04010.16
5.0.50.0130.0338.53
5.0.40.0230.0338.36
5.0.30.0230.0538.23
5.0.20.0200.0378.20
5.0.10.0100.0238.18
5.0.00.0130.0708.22
4.4.90.0200.0237.28
4.4.80.0170.0277.28
4.4.70.0130.0177.28
4.4.60.0170.0377.28
4.4.50.0130.0237.28
4.4.40.0230.0477.28
4.4.30.0170.0177.28
4.4.20.0100.0207.28
4.4.10.0200.0107.28
4.4.00.0170.0407.28
4.3.110.0170.0337.28
4.3.100.0230.0237.28
4.3.90.0070.0277.28
4.3.80.0130.0477.28
4.3.70.0130.0277.28
4.3.60.0170.0277.28
4.3.50.0170.0207.28
4.3.40.0130.0307.28
4.3.30.0070.0377.28
4.3.20.0100.0277.28
4.3.10.0070.0337.28
4.3.00.0100.0307.28

preferences:
39.05 ms | 401 KiB | 5 Q