PHP overloaded method __call()

PHP overloaded method __call()

__call() method is used to monitor incorrect method calls.

__call() (Method overloading)

In order to avoid errors when the called method does not exist, you can use the __call() method to avoid it. This method will be automatically called when the called method does not exist, and the program will continue to execute.

Syntax:

function __call(string $function_name, array $arguments)

{

 …

}

This method has two parameters, the first parameter $function_name will be automatically received. The name of the existing method, the second $args receives multiple parameters of the non-existing method in the form of an array.

Add to the class:

function __call($function_name, $args)

{

echo "The function you called: $function_name(parameters:
";

var_dump($args );

echo ")Does not exist!";

}

When calling a method that does not exist (such as the test() method):

$p1=new Person();

$p1-> test(2,"test");

The output result is as follows:

The function you called: test(parameter:

array(2) {

[0]=>int(2)

[ 1]=>string(4) "test"

}

) does not exist!