sql_regcase Make regular expression for case insensitive match &warn.deprecated.function.5-3-0.removed.7-0-0.alternatives; preg_match preg_quote &reftitle.description; stringsql_regcase stringstring Creates a regular expression for a case insensitive match. &reftitle.parameters; string The input string. &reftitle.returnvalues; Returns a valid regular expression which will match string, ignoring case. This expression is string with each alphabetic character converted to a bracket expression; this bracket expression contains that character's uppercase and lowercase form. Other characters remain unchanged. &reftitle.examples; ]]> &example.outputs; This can be used to achieve case insensitive pattern matching in products which support only case sensitive regular expressions.