3v4l.org

run code in 300+ PHP versions simultaneously
<?php generate(); // FUNCTION function generate() { $digilist = "0123456789ABCDEFGHJKLMNPQRTUVWXY"; //now we generate a new random ID number using the substrings of the digitList string above $three_chars = NULL; $three_chars .= substr( $digilist, rand( 1, 9 ), 1 ); $three_chars .= substr( $digilist, rand( 10, 31 ), 1 ); $three_chars .= substr( $digilist, rand( 10, 31 ), 1 ); for( $i = 22; $i < 100; $i++) { $id = $three_chars . $i; $key = get_key( $id ); echo $id . ":" . $key . "\n"; } } function get_key( $id ) { $digilist = "0123456789ABCDEFGHJKLMNPQRTUVWXY"; //ok so now we need to generate an MD5 hash of our ID $hash = md5($id); //cycle through the hash 16 (length of key) times (in steps of 2 because each hex bytes is 2 digits long) $i = 0; $key = NULL; for ($i; $i < 32; $i+=2) { //here we convert the next hex value to an integer and perform a bitwise AND operation against '31' //31 is the highest substring value in our digit list. $nextdigit = hexdec(substr($hash, $i, 2)) & 31; //if 'i' is divisable by 8 (every 4 cycles) then we want to add "-" if ((($i % 8) == 0) && ($i > 0)) { $key .= "-".substr($digilist, $nextdigit, 1); } else { $key .= substr($digilist, $nextdigit, 1); } } return $key; }
based on VS4oA

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)
7.4.120.0110.01016.12
7.4.110.0110.01016.18
7.4.100.0110.01016.13
7.4.90.0110.01016.17
7.4.80.0110.01016.17
7.4.70.0110.01016.21
7.4.60.0110.01016.19
7.4.50.0110.01016.21
7.4.40.0110.01016.21
7.4.30.0110.01016.21
7.4.20.0110.01016.18
7.4.10.0110.01016.10
7.4.00.0110.01016.09
7.3.240.0110.01016.13
7.3.230.0110.00916.20
7.3.220.0110.01016.21
7.3.210.0110.01016.18
7.3.200.0110.01016.18
7.3.190.0110.01016.18
7.3.180.0110.00916.21
7.3.170.0100.01016.17
7.3.160.0110.00916.22
7.3.150.0100.01016.20
7.3.140.0110.00916.20
7.3.130.0110.00916.19
7.3.120.0110.01016.15
7.3.110.0110.00916.13
7.3.100.0110.00916.13
7.3.90.0110.01016.16
7.3.80.0110.00916.14
7.3.70.0100.00916.08
7.3.60.0110.00916.07
7.3.50.0100.00916.11
7.3.40.0110.00916.12
7.3.30.0110.00916.13
7.3.20.0120.00916.20
7.3.10.0110.01016.20
7.3.00.0110.00916.20
7.2.340.0110.01016.39
7.2.330.0110.01016.36
7.2.320.0110.01016.37
7.2.310.0110.01016.39
7.2.300.0110.01016.39
7.2.290.0110.01016.38
7.2.280.0110.01016.38
7.2.270.0110.01016.40
7.2.260.0110.01016.36
7.2.250.0110.01016.37
7.2.240.0110.01016.38
7.2.230.0110.01016.36
7.2.220.0110.01016.38
7.2.210.0110.01016.34
7.2.200.0110.01016.41
7.2.190.0110.01016.32
7.2.180.0110.01016.32
7.2.170.0110.01016.37
7.2.160.0110.01016.35
7.2.150.0120.01016.47
7.2.140.0120.01016.46
7.2.130.0120.01016.49
7.2.120.0110.01016.39
7.2.110.0120.01016.40
7.2.100.0120.01016.45
7.2.90.0120.01016.46
7.2.80.0120.01016.41
7.2.70.0120.01016.36
7.2.60.0120.01016.47
7.2.50.0120.01016.34
7.2.40.0110.01016.41
7.2.30.0110.01016.41
7.2.20.0120.01016.40
7.2.10.0110.01016.44
7.2.00.0110.01016.46
7.1.330.0110.01015.38
7.1.320.0110.00915.39
7.1.310.0110.01015.32
7.1.300.0110.00915.40
7.1.290.0110.00915.39
7.1.280.0110.00915.40
7.1.270.0110.01015.40
7.1.260.0110.01015.36
7.1.250.0110.01015.29
7.1.240.0110.01015.24
7.1.230.0110.01015.17
7.1.220.0110.01015.17
7.1.210.0110.00915.25
7.1.200.0110.00915.18
7.1.190.0110.00915.15
7.1.180.0110.00915.16
7.1.170.0110.01015.19
7.1.160.0110.00915.21
7.1.150.0110.00915.13
7.1.140.0110.00915.12
7.1.130.0110.00915.23
7.1.120.0110.01015.16
7.1.110.0110.01015.33
7.1.100.0110.01015.32
7.1.90.0110.01015.26
7.1.80.0110.00915.14
7.1.70.0110.00915.30
7.1.60.0110.00915.31
7.1.50.0110.01015.21
7.1.40.0110.00915.32
7.1.30.0110.00915.20
7.1.20.0110.01015.22
7.1.10.0110.01015.33
7.1.00.0110.00915.29
7.0.330.0180.01815.37
7.0.320.0240.01015.40
7.0.310.0270.01015.22
7.0.300.0250.00715.31
7.0.290.0210.01815.38
7.0.280.0190.01115.51
7.0.270.0230.01215.24
7.0.260.0230.00815.30
7.0.250.0340.00015.37
7.0.240.0150.01515.37
7.0.230.0240.00315.23
7.0.220.0130.02015.34
7.0.210.0100.02015.32
7.0.200.0190.01315.45
7.0.190.0220.00915.46
7.0.180.0170.01515.43
7.0.170.0210.00515.41
7.0.160.0180.00915.39
7.0.150.0310.00315.34
7.0.140.0280.00615.34
7.0.130.0170.01115.34
7.0.120.0190.01115.36
7.0.110.0490.00615.39
7.0.100.0230.00515.31
7.0.90.0200.00815.39
7.0.80.0240.00915.39
7.0.70.0210.00715.20
7.0.60.0260.00815.23
7.0.50.0230.00515.26
7.0.40.0280.01415.39
7.0.30.0190.00915.39
7.0.20.0240.01215.31
7.0.10.0260.00315.14
7.0.00.0140.01515.20
5.6.400.0150.01815.80
5.6.390.0190.02016.10
5.6.380.0200.02016.05
5.6.370.0210.01516.34
5.6.360.0210.01516.05
5.6.350.0180.01816.13
5.6.340.0160.02015.82
5.6.330.0230.01316.09
5.6.320.0160.01615.66
5.6.310.0130.01715.85
5.6.300.0180.02216.04
5.6.290.0170.01415.92
5.6.280.0130.01715.91
5.6.270.0160.01615.88
5.6.260.0270.00715.97
5.6.250.0240.00716.07
5.6.240.0260.01015.97
5.6.230.0140.01916.00
5.6.220.0230.01015.94
5.6.210.0170.01516.09
5.6.200.0170.01715.91
5.6.190.0160.01616.07
5.6.180.0190.01416.23
5.6.170.0160.01616.13
5.6.160.0170.01715.77
5.6.150.0260.00915.86
5.6.140.0300.00615.93
5.6.130.0240.00816.02
5.6.120.0170.01716.04
5.6.110.0190.01516.11
5.6.100.0320.00516.07
5.6.90.0220.01216.06
5.6.80.0170.01315.95
5.6.70.0170.02015.75
5.6.60.0230.00615.91
5.6.50.0260.00916.01
5.6.40.0150.01515.75
5.6.30.0170.01316.06
5.6.20.0150.01815.87
5.6.10.0250.01215.95
5.6.00.0130.02215.95
5.5.380.0240.01816.09
5.5.370.0210.01516.14
5.5.360.0120.02016.17
5.5.350.0190.01115.84
5.5.340.0300.00715.79
5.5.330.0230.01015.80
5.5.320.0130.01815.80
5.5.310.0180.01515.90
5.5.300.0270.00816.09
5.5.290.0210.01715.82
5.5.280.0200.01415.96
5.5.270.0190.01516.27
5.5.260.0210.01115.73
5.5.250.0260.01515.91
5.5.240.0180.01215.83
5.5.230.0210.00915.95
5.5.220.0130.01715.90
5.5.210.0140.01715.87
5.5.200.0190.01315.98
5.5.190.0180.01115.90
5.5.180.0220.00915.96
5.5.170.0150.01515.73
5.5.160.0250.00616.20
5.5.150.0110.02215.72
5.5.140.0260.00615.88
5.5.130.0160.01415.91
5.5.120.0200.01315.70
5.5.110.0220.01115.98
5.5.100.0180.01215.86
5.5.90.0130.01615.66
5.5.80.0130.01715.94
5.5.70.0270.00515.99
5.5.60.0170.01715.93
5.5.50.0200.01215.94
5.5.40.0230.00915.92
5.5.30.0230.00816.04
5.5.20.0120.02016.06
5.5.10.0270.00715.93
5.5.00.0220.01615.92
5.4.450.0200.01013.27
5.4.440.0160.01013.27
5.4.430.0150.00913.27
5.4.420.0150.00913.27
5.4.410.0110.01413.27
5.4.400.0130.01213.27
5.4.390.0180.00413.27
5.4.380.0170.00713.27
5.4.370.0180.00613.27
5.4.360.0080.02313.27
5.4.350.0150.00713.27
5.4.340.0220.00613.27
5.4.330.0130.01613.27
5.4.320.0150.00813.27
5.4.310.0120.01213.27
5.4.300.0140.00913.27
5.4.290.0160.00813.27
5.4.280.0200.00313.27
5.4.270.0120.01213.27
5.4.260.0220.00413.27
5.4.250.0180.00913.27
5.4.240.0110.01513.27
5.4.230.0180.00613.27
5.4.220.0160.01113.27
5.4.210.0170.01313.27
5.4.200.0240.00513.27
5.4.190.0240.00313.27
5.4.180.0230.00713.27
5.4.170.0150.01113.27
5.4.160.0230.00913.27
5.4.150.0180.00913.27
5.4.140.0180.01113.27
5.4.130.0210.00613.27
5.4.120.0190.00813.27
5.4.110.0190.00913.27
5.4.100.0140.01213.27
5.4.90.0180.01213.27
5.4.80.0160.00813.27
5.4.70.0120.00813.27
5.4.60.0180.00513.27
5.4.50.0160.00613.27
5.4.40.0170.01213.27
5.4.30.0120.01213.27
5.4.20.0210.00413.27
5.4.10.0180.00913.27
5.4.00.0180.00513.27
5.3.290.0190.00513.27
5.3.280.0160.01313.27
5.3.270.0150.01113.28
5.3.260.0190.01113.27
5.3.250.0150.01213.27
5.3.240.0220.00613.27
5.3.230.0170.01713.27
5.3.220.0120.01613.27
5.3.210.0230.00713.27
5.3.200.0190.00913.27
5.3.190.0190.01213.27
5.3.180.0190.00713.27
5.3.170.0180.00913.27
5.3.160.0240.00913.28
5.3.150.0130.01913.27
5.3.140.0130.01313.27
5.3.130.0210.00413.27
5.3.120.0150.01013.27
5.3.110.0190.00613.27
5.3.100.0140.01013.27
5.3.90.0100.01413.27
5.3.80.0180.00613.27
5.3.70.0120.01213.27
5.3.60.0190.00613.27
5.3.50.0120.01513.27
5.3.40.0220.01213.27
5.3.30.0190.00613.27
5.3.20.0200.00313.27
5.3.10.0080.01613.27
5.3.00.0140.01713.27
5.2.170.0120.00813.27
5.2.160.0170.00913.27
5.2.150.0120.01513.27
5.2.140.0140.01113.27
5.2.130.0190.00313.27
5.2.120.0140.00813.27
5.2.110.0150.01213.27
5.2.100.0140.01513.27
5.2.90.0180.00613.27
5.2.80.0210.00313.27
5.2.70.0140.00713.27
5.2.60.0090.01513.27
5.2.50.0090.01313.27
5.2.40.0100.01113.27
5.2.30.0180.00313.27
5.2.20.0170.00413.27
5.2.10.0070.01413.27
5.2.00.0140.00713.27
5.1.60.0160.00913.27
5.1.50.0100.01013.27
5.1.40.0040.01613.27
5.1.30.0090.01313.27
5.1.20.0100.01113.27
5.1.10.0150.00513.27
5.1.00.0140.01113.27
5.0.50.0070.01713.27
5.0.40.0130.00513.27
5.0.30.0070.01713.27
5.0.20.0090.00913.27
5.0.10.0080.01713.27
5.0.00.0140.00313.27
4.4.90.0030.01013.27
4.4.80.0030.01013.27
4.4.70.0140.00013.27
4.4.60.0110.00613.27
4.4.50.0080.00413.27
4.4.40.0120.01113.27
4.4.30.0100.00213.27
4.4.20.0130.00313.27
4.4.10.0150.00313.27
4.4.00.0080.00613.27
4.3.110.0060.00813.27
4.3.100.0080.00413.27
4.3.90.0130.00413.27
4.3.80.0090.00413.27
4.3.70.0110.00513.27
4.3.60.0070.01013.27
4.3.50.0090.00413.27
4.3.40.0100.00413.27
4.3.30.0070.00413.27
4.3.20.0040.00713.27
4.3.10.0030.01213.27
4.3.00.0080.00813.27