How to use php call method

php call method refers to the "__call()" magic method, which is called when an inaccessible method is called in the object. The format of the call method is "function __call(string $function_name,array $arguments){ Method body}".

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__call(), when calling an inaccessible method in an object transfer.

This method has two parameters. The first parameter $function_name will automatically receive the non-existing method name, and the second $arguments will receive multiple parameters of the non-existing method in the form of an array.

1. The format of the __call() method:

function __call(string $function_name, array $arguments){    // 方法体}

2. The function of the __call() method:

In order to avoid errors when the called method does not exist, Accidentally causing the program to terminate can be avoided by using the __call() method.

This method will be automatically called when the called method does not exist, and the program will continue to execute.

Please refer to the following code:

<?phpclass Person{                             
    function say()    {  
                              
           echo "Hello, world!<br>"; 
    }      
        
    /**
     * 声明此方法用来处理调用对象中不存在的方法
     */    function __call($funName, $arguments)    
     { 
          echo "你所调用的函数：" . $funName . "(参数：" ;  
          // 输出调用不存在的方法名
          print_r($arguments); 
          // 输出调用不存在的方法时的参数列表          
          echo ")不存在！<br>\n"; 
          // 结束换行                      
    }                                          
}
$Person = new Person();            
$Person->run("teacher"); // 调用对象中不存在的方法，则自动调用了对象中的__call()方法$Person->eat("小明", "苹果");             
$Person->say();

Running result:

你所调用的函数：run(参数：Array ( [0] => teacher ) )不存在！
你所调用的函数：eat(参数：Array ( [0] => 小明 [1] => 苹果 ) )不存在！
Hello, world!

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