Php-mysql Course

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

  public static function setData(){
    self::$url = 'https://coursesweb.net/';
    return new self;
  }

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

// accessing show() method after setData()
clsShow::setData()->show();             // https://coursesweb.net/

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

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which tag is used to add definition lists into a <dl> element?
<dt> <dd> <li>
<dl>
 <dt>HTML</dt>
  <dd> - Hyper Text Markup Language</dd>
  <dd> - Language for web pages</dd>
</dl>
Which CSS property can hide an element on page, letting an empty space in its place?
display position visibility
#id {
  visibility: hidden;
}
Click on the event which is triggered when the mouse clicks on an object.
onclick onmouseover onfocus
document.getElementById("id").onclick = function(){
  alert("http://CoursesWeb.net/");
}
Indicate the PHP variable that contains the contents of both $_GET, $_POST, and $_COOKIE arrays.
$_SESSION $_GET $_REQUEST
if(isset($_REQUEST["id"])) {
  echo $_REQUEST["id"];
}
Chaining Static and Public Methods in PHP

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