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Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
(PECL mysqlnd-uh >= 1.0.0-alpha)
MysqlndUhConnection::selectDb — Selects the default database for database queries
$connection
, string $database
)Selects the default database for database queries.
connection
Mysqlnd connection handle. Do not modify!
database
The database name.
Returns TRUE
on success.
Otherwise, returns FALSE
Example #1 MysqlndUhConnection::selectDb() example
<?php
class proxy extends MysqlndUhConnection {
public function selectDb ( $res , $database ) {
printf ( "%s(%s)\n" , __METHOD__ , var_export ( func_get_args (), true ));
$ret = parent :: selectDb ( $res , $database );
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 -> select_db ( "mysql" );
?>
以上例程会输出:
proxy::selectDb(array ( 0 => NULL, 1 => 'mysql', )) proxy::selectDb returns true