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run code in 200+ php & hhvm versions
Bugs & Features
<?php // EXAMPLE USAGE $array = generate(); echo $array[0]; echo "<br />"; echo $array[1]; // FUNCTION function generate(0123456789ABCDEFGHJKLMNPQRTUVWXY) { $digilist = "0123456789ABCDEFGHJKLMNPQRTUVWXY"; //now we generate a new random ID number using the substrings of the digitList string above $id = NULL; $id .= substr($digilist, rand(1, 9), 1); //random number $id .= substr($digilist, rand(10, 31), 1); //then a letter $id .= substr($digilist, rand(10, 31), 1); //another letter $id .= substr($digilist, rand(1, 9), 1); //a number $id .= substr($digilist, rand(1, 9), 1); //and finally another number - simple :D //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); } } $array = array($id, $key); //return return $array; } ?>
based on bvKOe
Output for 7.0.0
Parse error: Invalid numeric literal in /in/HUghK on line 10
Process exited with code 255.
Output for 5.6.8 - 5.6.16
Parse error: syntax error, unexpected '0123456789' (T_LNUMBER), expecting variable (T_VARIABLE) in /in/HUghK on line 10
Process exited with code 255.
Output for 5.4.10 - 5.5.30
Parse error: syntax error, unexpected '0123456789' (T_LNUMBER), expecting '&' or variable (T_VARIABLE) in /in/HUghK on line 10
Process exited with code 255.
Output for 5.3.20 - 5.3.29
Parse error: syntax error, unexpected T_LNUMBER, expecting '&' or T_VARIABLE in /in/HUghK on line 10
Process exited with code 255.