Description
string 
ingres_error ( [resource link] )
     Returns a string containing the last error, or NULL if no error has
     occurred.
    
     If a link resource is passed to
     ingres_error() it returns the last error recorded for
     the link. If no link is passed then ingres_error()
     returns the last error reported using the default link.
    
     The function, ingres_error(), should always be called
     after executing any database query.  Calling another function before 
     ingres_error() is called will reset or change any
     error message from the last Ingres function call.
    
     
Example 1. ingres_error() example 
<?php ingres_connect($database, $user, $password);
  ingres_query("select * from table");
  $error_text = ingres_error();
  if ( is_null($error_text) ) {    echo "An error occured - " . $error_text; } ?>
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     See also
     ingres_errno() and
     ingres_errsqlstate().