What I have learned
Learning learn PHP in codecademy try to start Yii Hands on keep fixing #374 Some keypoints 1.concatenation assigment $fruits = “apple” $fruits .= “orange” echo $fruits will return ‘apple orange’ 2.assign by reference $order = “5 eggs” $new-order =& $order $new-order .=", 8 hams’ echo $order will return ‘5 eggs, 8 hams’ echo $new-order will return ‘5 eggs, 8 hams’ 3.curly brackets $name = “Ken” echo ${name}eeeeeeee will return ‘Ken’