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This article mainly explains "what is the meaning of $this in php". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the meaning of $this in php"?

In php, "$this" means "current object". It is a pointer to the instance of the current object, used in conjunction with the connector "- >" to complete access between members within the object; syntax "$this-> member property;" or "$this-> member method (parameter list);".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

The meaning of $this is to represent the instantiated concrete object, that is, the current object; $this is a pointer to the instance of the current object, not to any other object or class.

In PHP object-oriented programming, once an object is created, there is a special object reference "$this" in each member method in the object. The "$this" represents the object to which the member method belongs, and is used in conjunction with the connector-> to complete access between the internal members of the object. As follows:

$this-> member attribute; $this-> member method (parameter list)

For example, if there is a $name attribute in the Website class, we can access the $name member attribute in the class using the following method:

$this-> name

It is important to note that when you use $this to access a member attribute, you only need to follow the name of the attribute, not the $symbol. In addition, $this can only be used in objects, $this cannot be used elsewhere, and $this cannot be called for things that do not belong to objects, so there is no $this without objects.

[example] use $this to call properties and methods in the class.

Output result:

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