strcasecmp Binary safe case-insensitive string comparison &reftitle.description; intstrcasecmp stringstring1 stringstring2 Binary safe case-insensitive string comparison. The comparison is not locale aware; only ASCII letters are compared in a case-insensitive way. &reftitle.parameters; string1 The first string string2 The second string &reftitle.returnvalues; Returns -1 if string1 is less than string2; 1 if string1 is greater than string2, and 0 if they are equal. &reftitle.changelog; &Version; &Description; &standard.changelog.binary-safe-string-comparison; &reftitle.examples; ]]> &reftitle.seealso; strcmp preg_match substr_compare strncasecmp stristr substr