MysqlndUhConnection::getErrorNumber

(PECL mysqlnd-uh >= 1.0.0-alpha)

MysqlndUhConnection::getErrorNumber — Returns the error code for the most recent function call

说明

public int MysqlndUhConnection::getErrorNumber ( mysqlnd_connection $connection )

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 ( $ret ,  true ));
   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

mysqlnd_uh_set_connection_proxy() - Installs a proxy for mysqlnd connections
MysqlndUhConnection::getErrorString() - Returns a string description of the last error
mysqli_errno() - 返回最近函数调用的错误代码
mysql_errno() - 返回上一个 MySQL 操作中的错误信息的数字编码