yii2 get username of logged in user

Use following code get the username of the currently logged in user :

<?= \Yii::$app->user->identity->username ?>

YII2 redirect to previous page or referrer

YII2 redirect to previous page or referrer $this -> redirect ( Yii :: $app -> request -> referrer );

yii, recursive function to create category sub category hierarchy

Create this function in the category model file: --------------------------------------------------------------------------------- <?php public function get_category_hr ( $cat_id , $selected_cat_id , $level_string ) { $select_str = '' ; if ( ! $level_string ) { $level_string = '' ; } if ( $cat_arr = $this -> findAll ( 'category_parent_id=' . $cat_id )) { foreach ( $cat_arr as $cat ) { $select_str .= "<option value= { $cat -> category_id } " ; if ( $selected_cat_id == $cat -> category_id ) $select_str .= ' selected' ; $select_str .= "> { $level_string }{ $cat -> category_name } </option>" ; $select_str .= $this -...

yii, Executing a SQL without calling a Model

yii, Executing a SQL without calling a Model <? $connection = Yii :: app () -> db ; $sql = "SELECT id,username FROM users" ; $command = $connection -> createCommand ( $sql ); $dataReader = $command -> query (); $rows = $dataReader -> readAll (); print_r ( $rows ); ?>

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