I made a PHP function which returns a random string using Alphabets [a to z] and [A to Z], Numbers [0 to 9]. It is very easy to use and can be easily modified.
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<?php /* * Create a random string using PHP * @author php-tricks * @param $length the length of the string how long you want to create * @return $string as a result of random string */ function generateRandomString($length = 6) { $string = ""; $valid_characters = array_merge(range('A','Z'), range('a','z'), range('0','9')); $max = count($valid_characters) - 1; for ($i = 0; $i < $length; $i++) { $rand = mt_rand(0, $max); $string .= $valid_characters[$rand]; } return $string ; } |
How to call it ??
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<?php /* Calling above function */ echo generateRandomString(12); // Here you will get random string length of 12 characters. ?> |
Note: You can remove any of the ranges in $valid_characters (For e.g. if you do not want uppercase letters in random string then delete the range('A','Z')) or you can put you own array of custom characters.
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