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Regex for Alphanumeric Only – No Spaces, dashes or Underlines
Regex for A-Z, 0-9 and limited to 0-32 characters Pattern: /^[a-zA-Z0-9]{0,32}$/ Usage if (preg_match(‘/^[a-zA-Z0-9]{0,32}$/’, $mystring)) { return true; }
Regex for A-Z, 0-9 and limited to 0-32 characters Pattern: /^[a-zA-Z0-9]{0,32}$/ Usage if (preg_match(‘/^[a-zA-Z0-9]{0,32}$/’, $mystring)) { return true; }