getRandomBytes() getRandomBytes(integer $length, boolean $strong = false) : string Generate random bytes using OpenSSL or Mcrypt and mt_rand() as fallback Parameters integer $length boolean $strong true if you need a strong random generator (cryptography) Returns string
_getRandomBytes() _getRandomBytes(integer $size) : string Generate a random string of the specified size (very low security) Parameters integer $size The size of the requested random string Returns string — A string of the requested size