php man page for ingres_error

INGRES_ERROR(3) 							 1							   INGRES_ERROR(3)

ingres_error - Get a meaningful error message for the last error generated

SYNOPSIS
       string ingres_error ([resource  $link])

DESCRIPTION
	Returns a string containing the last error, or NULL if no error has occurred.

	If  a  $link  resource	is  passed  to	ingres_error(3),  it  returns  the  last  error  recorded  for the link. If no link is passed then
       ingres_error(3) returns the last error reported using the default link.

	The function, ingres_error(3), should always be called after executing any database query. Calling another function before ingres_error(3)
       is called will reset or change any error message from the last Ingres function call.

PARAMETERS
	      o $link
		- The connection link identifier

RETURN VALUES
	Returns a string containing the last error, or NULL if no error has occurred.

EXAMPLES
       Example #1

	      Get a message for the last error generated

	      <?php
	      $link = ingres_connect($database, $user, $password);

	      $result = ingres_query($link, "select * from table");

	      $error_text = ingres_error();

	      if (!is_null($error_text)) {
		 echo "An error occurred - " . $error_text;
	      }
	      ?>

SEE ALSO
       ingres_errno(3), ingres_errsqlstate(3), ingres_next_error(3).

PHP Documentation Group 													   INGRES_ERROR(3)