mysqli_errno
(PHP 5)
mysqli_errno
(no version information, might be only in CVS)
mysqli->errno -- Returns the error code for the most recent function call
说明
Procedural style:
int
mysqli_errno ( mysqli link )
Object oriented style (property):
class
mysqli {
int errno
}
Returns the last error code for the most recent MySQLi function call that
can succeed or fail.
Client error message numbers are listed in the MySQL
errmsg.h header file, server error message numbers
are listed in mysqld_error.h.
In the MySQL source distribution you can find a complete list of error
messages and error numbers in the file
Docs/mysqld_error.txt.
返回值
An error code value for the last call, if it failed. zero means no error
occurred.
范例
例 1. Object oriented style
<?php $mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); }
if (!$mysqli->query("SET a=1")) { printf("Errorcode: %d\n", $mysqli->errno); }
/* close connection */ $mysqli->close(); ?>
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例 2. Procedural style
<?php $link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); }
if (!mysqli_query($link, "SET a=1")) { printf("Errorcode: %d\n", mysqli_errno($link)); }
/* close connection */ mysqli_close($link); ?>
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上例将输出: