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# PHP mysqli_connect() Function [ PHP MySQLi Reference](#) ## Example Open a new connection to a MySQL server: * * * ## Definition and Usage The mysqli_connect() function opens a new connection to a MySQL server. * * * ## Syntax mysqli_connect(_host,username,password,dbname,port,socket_)_;_ | Parameter | Description | | --- | --- | | _host_ | Optional. Specifies the hostname or IP address. | | _username_ | Optional. Specifies the MySQL username. | | _password_ | Optional. Specifies the MySQL password. | | _dbname_ | Optional. Specifies the default database to use. | | _port_ | Optional. Specifies the port number to attempt to connect to the MySQL server. | | _socket_ | Optional. Specifies the socket or named pipe to be used. | ## Technical Details | Return Value: | Returns an object representing the connection to a MySQL server. | | :--- | | PHP Version: | 5+ | * * PHP MySQLi Reference](#)