php教程

ingres_error

(PECL ingres >= 1.1.0)

ingres_errorGet a meaningful error message for the last error generated

说明

ingres_error ([ resource $link ] ) : string

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.

参数

link

The connection link identifier

返回值

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

范例

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;
}
?>

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