PHP Conference China 2020

MysqlndUhConnection::selectDb

(PECL mysqlnd-uh >= 1.0.0-alpha)

MysqlndUhConnection::selectDbSelects the default database for database queries

Descrição

public MysqlndUhConnection::selectDb ( mysqlnd_connection $connection , string $database ) : bool

Selects the default database for database queries.

Parâmetros

connection

Mysqlnd connection handle. Do not modify!

database

The database name.

Valor Retornado

Returns TRUE on success. Otherwise, returns FALSE

Exemplos

Exemplo #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($rettrue));
  return 
$ret;
 }
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost""root""""test");
$mysqli->select_db("mysql");
?>

O exemplo acima irá imprimir:

proxy::selectDb(array (
  0 => NULL,
  1 => 'mysql',
))
proxy::selectDb returns true

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