Description
string 
fbsql_error ( [resource link_identifier] )
     Returns the error text from the last fbsql function, or
     '' (the empty string) if no error occurred.
    
     Errors coming back from the fbsql database backend don't issue
     warnings. Instead, use fbsql_error() to
     retrieve the error text. Note that this function only returns the
     error text from the most recently executed fbsql function (not
     including fbsql_error() and
     fbsql_errno()), so if you want to use it, make
     sure you check the value before calling another fbsql function.
     
     
     See also: fbsql_errno() and
     fbsql_warnings().