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This article mainly explains the "php = > and-> refers to what", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in-depth, together to study and learn "php = > and-> refers to what" it!

In PHP, "= >" is an array operator that corresponds to the key value and key name in the array with the syntax of "array (key = > value)" and "- >" to refer to the methods and properties of the class instance with the syntax of "$obj- > a".

This article operating environment: Windows10 system, PHP7.1 version, Dell G3 computer.

What do "= >" and "- >" in php mean?

1. The meaning of = >,->:

-> is used by an object to execute a method or get a property.

= > is applied to the key and value pairs in the array.

II. Usage

1. The use of = > the relationship between key and value in an array for example:

$a = array ('0' = >'1'); echo $a ['0']; echo $a ['2']

2. The methods and properties used to reference an instance of the class in the usage class of-> for example:

Class Test {function add () {return $this- > var++;} var $var = 0;} $a = new Test; / / instantiated object name echo $a-> add (); echo $a-> var

Extended data

The-> code in PHP is as follows:

The = > code in PHP is as follows:

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