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PHP5中文手册

ingres_error

(PECL ingres:1.1-1.4.3)

ingres_error — Gets a meaningful error message for the last error generated

说明

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.

参数

link

The connection link identifier. If not specified, the last opened link is used.

返回值

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

范例

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;
}
?>