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Dieses Dokument verwendet PHP-Handbuch für chinesische Websites Freigeben
(PECL mysqlnd-uh >= 1.0.0-alpha)
MysqlndUhConnection::ping — Pings a server connection, or tries to reconnect if the connection has gone down
$connection
)Pings a server connection, or tries to reconnect if the connection has gone down.
connection
Mysqlnd connection handle. Do not modify!
Returns TRUE
on success.
Otherwise, returns FALSE
Example #1 MysqlndUhConnection::ping() example
<?php
class proxy extends MysqlndUhConnection {
public function ping ( $res ) {
printf ( "%s(%s)\n" , __METHOD__ , var_export ( func_get_args (), true ));
$ret = parent :: ping ( $res );
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" );
$mysqli -> ping ();
?>
以上例程会输出:
proxy::ping(array ( 0 => NULL, )) proxy::ping returns true