douhan8009 2016-02-27 04:23
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在同一个PHP类中调用另一个方法时,使用`$ this`或避免它更好吗?

When calling a method in the same class from within another method, is it better to use $this or to avoid it, or is there no difference at all?

One benefit I can see with using $this is that it is explicit. For example:

class A {
  public function a() {
    $x = $this->b();// or $x = b()
  }

  public function b() {
    //
  }
}
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  • doushuangdui5419 2016-02-27 04:48
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    Unlike other languages, like C++ and C# and Java, to access a member property of a class in PHP, you must always use $this as a qualifier upon the property.

    For example:

    class Test {
        public $myVariable;
    
        public function __construct($a) {
            $this->myVariable = $a;
            // $myVariable doesn't exist, must always use $this-><*>
        }
    }
    
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