string sql_regcase(string string);
Returns a valid regular expression which will match string, ignoring case. This expression is string with each character converted to a bracket expression; this bracket expression contains that character's uppercase and lowercase form if applicable, otherwise it contains the original character twice.
Example 1. sql_regcase() example
echo sql_regcase( "Foo bar" );
This can be used to achieve case insensitive pattern matching in products which support only case sensitive regular expressions.