Commonly used functions for php native operation database

mysqli_query( $conn, "set names 'utf8'" ); //Set the character encoding

mysqli_close( $conn ); //Close the connection

$conn = new mysqli( 'localhost', 'Library name', 'Library password' );//Create a connection

if ( $conn->connect_error ) {

die( "Connection failed: " . $ conn->connect_error );

}//Detect connection

$result = mysqli_query( $conn, $sql );

$row = mysqli_fetch_assoc( $result ) ;//Check for phrases

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