{"id":2203,"date":"2021-11-14T21:11:19","date_gmt":"2021-11-14T18:11:19","guid":{"rendered":"https:\/\/www.etemkeskin.com\/?p=2203"},"modified":"2021-11-14T21:12:50","modified_gmt":"2021-11-14T18:12:50","slug":"__invoke-magic-method-in-php","status":"publish","type":"post","link":"https:\/\/www.etemkeskin.com\/index.php\/2021\/11\/14\/__invoke-magic-method-in-php\/","title":{"rendered":"__invoke() Magic Method in PHP"},"content":{"rendered":"\n

There are various magic methods<\/strong> that will make our work easier in PHP. Magic methods begin with two underscores(__construct, __invoke). In this post, I will explain the __invoke()<\/strong> magic method and its usage, which is frequently used in PHP.<\/p>\n\n\n\n

__invoke() :<\/h3>\n\n\n\n

The __invoke<\/strong> is a method that we define in the class. If we call the object as a function after instantiating an object from the class, the method to be called is the __invoke() method.<\/p>\n\n\n\n

Example<\/strong>:<\/p>\n\n\n\n

First we will define a class named Car<\/strong>.<\/p>\n\n\n\n

class Car{\n\n    public function __construct(){\n        echo "object created <br>";\n    }\n\n    public function __invoke(){\n        echo "invoke method called";\n    }\n}<\/pre><\/div>\n\n\n\n
Let’s create an object of this class. When we create an object, the __construct<\/strong> method will run. If we then call the object as a function, the __invoke<\/strong> method will run.<\/p>\n\n\n\n
$obj = new Car();\n\n$obj();\n\n\/\/Output: object created \n\/\/Output: invoke method called <\/pre><\/div>\n\n\n\n
We can check whether the object is callable with the is_callable()<\/strong> function before calling it.<\/p>\n\n\n\n
echo is_callable($obj) ? 'yes' : 'no';\n\/\/Output : yes <\/pre><\/div>\n\n\n\n
Callable Typehint<\/h3>\n\n\n\n
The callable typehint <\/strong>checks whether the thing being called is callable or not so that it is executed. It came with PHP 5.4.<\/strong> Below you will see a usage of how to use the __invoke magic<\/strong> method.<\/p>\n\n\n\n
function start_engine(Callable $func) {\n    $func();\n    return "engine started";\n  }\n\n$obj = new Car();\n\necho start_engine($obj);\n\/\/Output: object created \n\/\/Output: invoke method called\n\/\/Output: engine started<\/pre><\/div>\n\n\n\n
Good Luck …<\/p>\n","protected":false},"excerpt":{"rendered":"
There are various magic methods that will make our work easier in PHP. Magic methods begin with two underscores(__construct, __invoke). In this post, I will explain the __invoke() magic method and its usage, which is frequently used in PHP. __invoke() : The __invoke is a method that we define in the class. If we call […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"yoast_head":"\n__invoke() Magic Method in PHP - blog website<\/title>\n<meta name=\"description\" content=\"There are various magic methods that will make our work easier in PHP. Magic methods begin with two underscores(__construct, __invoke). 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