PHP – Generate a random password based on length

Here’s a quick function to generate a password. All you have to do is call it passing the length of your required password as an argument.

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<?php function generatePassword($intNumOfChars) {       if (is_numeric($intNumOfChars) && ($intNumOfChars > 0)) {     $strChars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_";     for ($i = 0; $i < $intNumOfChars; $i ++)  {         $strPassword .= $strChars[rand(0, strlen($strChars)-1)];      }     }     return $strPassword; } ?>