MSalehi

سلام
کدی که من نوشتم و جواب گرفتم این هست:
 

$url = $_SERVER['REQUEST_URI'];

// checking if we are not in home page
if($url != '/'){
	// getting language from url
   $lang = $url[1] . $url[2];

	// excluding the persian language
	if( $lang != 'fa' ) {

  	add_filter( 'option_active_plugins', function( $plugins ) {
		// disable the jalali date plugin or whatever...
   		$not_allowed = array( 'wp-shamsi/wp-shamsi.php' );

       	return array_values( array_diff( $plugins, $not_allowed ) );
    	});
	}
}