MysqlndUhConnection::queryReadResultsetHeader
(PECL mysqlnd-uh >= 1.0.0-alpha)
MysqlndUhConnection::queryReadResultsetHeader — Read a result set header
说明
public MysqlndUhConnection::queryReadResultsetHeader ( mysqlnd_connection$connection
, mysqlnd_statement $mysqlnd_stmt
) : bool
Read a result set header.
参数
connection
Mysqlnd connection handle. Do not modify!
mysqlnd_stmt
Mysqlnd statement handle. Do not modify!
Set to NULL, if function
is not used in the context of a prepared statement.
返回值
Returns TRUE on success.
Otherwise, returns FALSE
范例
Example #1 MysqlndUhConnection::queryReadResultsetHeader() example
<?php
class proxy extends MysqlndUhConnection {
public function queryReadResultsetHeader($res, $stmt) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::queryReadResultsetHeader($res, $stmt);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
$res = $mysqli->query("SELECT 'Welcome mysqlnd_uh!' FROM DUAL");
var_dump($res->fetch_assoc());
?>
以上例程会输出：
proxy::queryReadResultsetHeader(array (
0 => NULL,
1 => NULL,
))
proxy::queryReadResultsetHeader returns true
array(1) {
["Welcome mysqlnd_uh!"]=>
string(19) "Welcome mysqlnd_uh!"
}
参见
mysqlnd_uh_set_connection_proxy() - Installs a proxy for mysqlnd connections
User Contributed Notes
There are no user contributed notes for this page.官方地址：https://www.php.net/manual/en/mysqlnduhconnection.queryreadresultsetheader.php