Description
string 
sql_regcase ( string string )
     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.
    
     
| Example 1. sql_regcase() example | 
<?phpecho sql_regcase("Foo - bar.");
 ?>
 | 
 The above example will output: | [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.