MysqlndUhConnection::getErrorNumber

(PECL mysqlnd-uh >= 1.0.0-alpha)

MysqlndUhConnection::getErrorNumberReturns the error code for the most recent function call

说明

public MysqlndUhConnection::getErrorNumber ( mysqlnd_connection $connection ) : int

Returns the error code for the most recent function call.

参数

connection

Mysqlnd connection handle. Do not modify!

返回值

Error code for the most recent function call.

范例

MysqlndUhConnection::getErrorNumber() is not only executed after the invocation of a user space API call which maps directly to it but also called internally.

Example #1 MysqlndUhConnection::getErrorNumber() example

<?php
class proxy extends MysqlndUhConnection {
 public function 
getErrorNumber($res) {
   
printf("%s(%s)\n"__METHOD__var_export(func_get_args(), true));
   
$ret parent::getErrorNumber($res);
   
printf("%s returns %s\n"__METHOD__var_export($rettrue));
   return 
$ret;
 }
}
mysqlnd_uh_set_connection_proxy(new proxy());

printf("connect...\n");
$mysqli = new mysqli("localhost""root""""test");
printf("query...\n");
$mysqli->query("PLEASE_LET_THIS_BE_INVALID_SQL");
printf("errno...\n");
var_dump($mysqli->errno);
printf("close...\n");
$mysqli->close();
?>

以上例程会输出:

connect...
proxy::getErrorNumber(array (
  0 => NULL,
))
proxy::getErrorNumber returns 0
query...
errno...
proxy::getErrorNumber(array (
  0 => NULL,
))
proxy::getErrorNumber returns 1064
int(1064)
close...

参见

关注编程学问公众号