3v4l.org

run code in 300+ PHP versions simultaneously
<?php function get_next_colid(string $id): string { if ($id === '') { return "\0"; } $chrs = str_split($id); $bytes = array_map(fn(string $chr): int => ord($chr), $chrs); $last = array_pop($bytes); $last++; $bytes[] = $last; $reveresed = array_reverse($bytes); foreach($reveresed as $pos => $val) { if ($val > 255) { $reveresed[$pos] = 255; if (isset($reveresed[$pos+1])) { $reveresed[$pos+1] += ($val - 255); } else { $reveresed[$pos+1] = ($val - 255); } } } $bytes = array_reverse($reveresed); $chrs = array_map(fn(int $byte): string => chr($byte), $bytes); return join('', $chrs); } $s = '~'; for($i = 0; $i <= 1000; $i++) { print bin2hex($s) . PHP_EOL; $s = get_next_colid($s); } var_dump($s);

Abusive script

This script was stopped while abusing our resources

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)
8.5.10.0140.01021.73
8.5.00.0130.01520.09
8.4.160.0150.01223.90
8.4.150.0100.00516.92
8.4.140.0160.01017.54
8.4.130.0110.01119.35
8.4.120.0060.00822.46
8.4.110.0100.00922.11
8.4.100.0110.01318.88
8.4.90.0120.01120.83
8.4.80.0050.00818.65
8.4.70.0100.00818.71
8.4.60.0140.01218.89
8.4.50.0060.00718.81
8.4.40.0170.01019.35
8.4.30.0140.00320.60
8.4.20.0160.00719.75
8.4.10.0000.01220.43
8.3.290.0110.01320.76
8.3.280.0100.01318.52
8.3.270.0130.01216.69
8.3.260.0080.00316.62
8.3.250.0060.00416.99
8.3.240.0130.01116.67
8.3.230.0100.01216.48
8.3.220.0120.00718.83
8.3.210.0170.00816.54
8.3.200.0170.00816.82
8.3.190.0110.01217.21
8.3.180.0090.00719.03
8.3.170.0180.00416.55
8.3.160.0100.01017.37
8.3.150.0170.00717.00
8.3.140.0070.01019.03
8.3.130.0090.00018.43
8.3.120.0070.00418.95
8.3.110.0000.01320.94
8.3.100.0160.00924.06
8.3.90.0070.00326.77
8.3.80.0070.00716.75
8.3.70.0110.00716.58
8.3.60.0060.01218.43
8.3.50.0060.01120.22
8.3.40.0110.01119.35
8.3.30.0150.00419.06
8.3.20.0100.00024.18
8.3.10.0090.00024.66
8.3.00.0030.01026.16
8.2.300.0130.01222.29
8.2.290.0060.00420.43
8.2.280.0140.00718.98
8.2.270.0120.01217.03
8.2.260.0030.02016.79
8.2.250.0060.00318.33
8.2.240.0150.01116.84
8.2.230.0080.00322.58
8.2.220.0060.00337.54
8.2.210.0000.01026.77
8.2.200.0090.00318.29
8.2.190.0030.01716.88
8.2.180.0120.00625.92
8.2.170.0170.00719.00
8.2.160.0140.00422.96
8.2.150.0000.00925.66
8.2.140.0030.00624.66
8.2.130.0000.00926.16
8.2.120.0060.00326.16
8.2.110.0060.00622.13
8.2.100.0070.00717.97
8.2.90.0000.01019.12
8.2.80.0060.00317.97
8.2.70.0000.01117.75
8.2.60.0000.01018.04
8.2.50.0000.01218.07
8.2.40.0060.00319.88
8.2.30.0030.00618.39
8.2.20.0030.00620.36
8.2.10.0090.00018.19
8.2.00.0070.00319.23
8.1.330.0140.01216.20
8.1.320.0100.01616.00
8.1.310.0000.02216.27
8.1.300.0070.01318.23
8.1.290.0000.01030.84
8.1.280.0100.01425.92
8.1.270.0000.01023.99
8.1.260.0060.00326.35
8.1.250.0030.00628.09
8.1.240.0040.00721.44
8.1.230.0080.00917.45
8.1.220.0090.00017.76
8.1.210.0040.00818.77
8.1.200.0060.00617.35
8.1.190.0000.00917.35
8.1.180.0030.00618.10
8.1.170.0090.00018.59
8.1.160.0050.00520.59
8.1.150.0080.00318.70
8.1.140.0000.01117.46
8.1.130.0060.00318.91
8.1.120.0030.00617.46
8.1.110.0030.00717.36
8.1.100.0030.00717.41
8.1.90.0000.00917.44
8.1.80.0040.00717.46
8.1.70.0040.00417.45
8.1.60.0000.00917.63
8.1.50.0030.00617.43
8.1.40.0070.00317.57
8.1.30.0070.00317.66
8.1.20.0000.01017.71
8.1.10.0030.00617.64
8.1.00.0040.00417.55
8.0.300.0100.00018.77
8.0.290.0060.00316.75
8.0.280.0030.00618.46
8.0.270.0000.00916.82
8.0.260.0040.00418.45
8.0.250.0030.00616.95
8.0.240.0070.00316.95
8.0.230.0060.00316.86
8.0.220.0030.00616.79
8.0.210.0000.00916.78
8.0.200.0050.00516.83
8.0.190.0090.00016.92
8.0.180.0000.00916.82
8.0.170.0050.00516.98
8.0.160.0000.01116.78
8.0.150.0050.00516.73
8.0.140.0060.00316.87
8.0.130.0000.01016.84
8.0.120.0000.00916.84
8.0.110.0000.00916.95
8.0.100.0030.00716.79
8.0.90.0030.00816.97
8.0.80.0050.00516.92
8.0.70.0030.00716.88
8.0.60.0030.00916.96
8.0.50.0130.00016.81
8.0.30.0030.00816.89
8.0.20.0000.01317.02
8.0.10.0050.00516.88
7.4.330.0030.00315.55
7.4.320.0000.00916.50
7.4.300.0030.00616.66
7.4.290.0030.00616.47
7.4.280.0070.00416.65
7.4.270.0030.00616.53
7.4.260.0030.00616.61
7.4.250.0000.01016.45
7.4.240.0000.01116.70
7.4.230.0040.00716.51
7.4.220.0030.00916.38
7.4.210.0040.00716.41
7.4.200.0060.00616.52
7.4.190.0030.00716.49
7.4.180.0070.00316.58
7.4.160.0030.00616.54
7.4.150.0060.00316.53
7.4.140.0000.01016.49
7.4.130.0000.01016.46
7.4.120.0030.00916.47
7.4.110.0070.01216.46
7.4.100.0040.00716.55
7.4.90.0040.00816.50
7.4.80.0040.00416.40
7.4.70.0030.00616.61
7.4.60.0030.00716.52
7.4.50.0060.00316.48
7.4.40.0030.00716.46
7.4.30.0070.00316.60
7.4.20.0000.01116.43
7.4.10.0060.00616.45
7.4.00.0040.00716.53

preferences:
62.24 ms | 2618 KiB | 5 Q