To chain a static and a public method through class name, for example:
The instance of the className must be returned in the staticMethod, using "return new self" .
- Code example:
class clsShow {
  public static $url;

  public static function setData(){
    self::$url = '';
    return new self;

  public function show(){
    echo self::$url;

// accessing show() method after setData()
clsShow::setData()->show();             //

• To this page: PHP Method Chaining it is a lesson with more details and examples about chaining multiple methods.

Daily Test with Code Example

Which tag adds a new line into a paragraph?
<b> <br> <p>
First line ...<br>
Other line...
Which CSS property can be used to add space between letters?
text-size word-spacing letter-spacing
#id {
  letter-spacing: 2px;
What JavaScript function can be used to get access to HTML element with a specified ID?
getElementById() getElementsByTagName() createElement()
var elm = document.getElementById("theID");
var content = elm.innerHTML;
Click on the "echo" correct instruction.
echo "" echo ""; echo """;
echo "Address URL:";
Chaining Static and Public Methods in PHP

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