sql_regcasePHP ManualPrevNextsql_regcasesql_regcase -- make regular expression for case insensitive matchDescriptionstring 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 1  2 echo sql_regcase( "Foo bar" ); 3  prints [Ff][Oo][Oo][ ][Bb][Aa][Rr]. This can be used to achieve case insensitive pattern matching in products which support only case sensitive regular expressions.PrevHomeNextsplitUpSemaphore and shared memory functions