(PECL maxdb >= 1.0)
maxdb_errno -- maxdb->errno — Returns the error code for the most recent function call
过程化风格
面向对象风格
The maxdb_errno() function will return the last error code for the most recent MaxDB function call that can succeed or fail with respect to the database link defined by the link parameter. If no errors have occured, this function will return zero.
An error code value for the last call, if it failed. zero means no error occurred.
Example #1 Object oriented style
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if (!$maxdb->query("SELECT xxx FROM hotel.city")) {
printf("Errorcode: %d\n", $maxdb->errno);
}
/* close connection */
$maxdb->close();
?>
Example #2 Procedural style
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if (!maxdb_query($link, "SELECT xxx FROM hotel.city")) {
printf("Errorcode: %d\n", maxdb_errno($link));
}
/* close connection */
maxdb_close($link);
?>
以上例程的输出类似于：
PHP Warning: maxdb_query(): -4005 POS(8) Unknown column name:XXX [42000] <...> Errorcode: -4005