random_string()

random_string([$type = 'alnum'[, $len = 8]])

Generates a random string based on the type and length you specify. Useful for creating passwords or generating random hashes.

The first parameter specifies the type of string, the second parameter specifies the length. The following choices are available:

• alpha: A string with lower and uppercase letters only.
• alnum: Alpha-numeric string with lower and uppercase characters.
• basic: A random number based on mt_rand().
• numeric: Numeric string.
• nozero: Numeric string with no zeros.
• md5: An encrypted random number based on md5() (fixed length of 32).
• sha1: An encrypted random number based on sha1() (fixed length of 40).

Usage example:

echo random_string('alnum', 16);