php class knowledge --- magic method __toString, __ call, __ debugInfo

<? PHP 

class mycoach 
{ 
    public function the __construct ( $ name, $ Age) 
{ 
 $ this-> name = $ name; 
 $ this-> Age = $ Age; 
 echo . "upon Melancholy Hill" " \ n- "; 
} 

 public function the __toString () 
{ 
 #echo trigger, returns a string return "Hard and Working Party with CPC and CJ." " \ n- "; } public __debugInfo function () { # method strange, a parsing function does not exist and wherein the array it returns an array # the process must have two parameters #var_dump () method of the trigger return [ 'name' =>
 


 

 
 
 
 this- $> name, 'Age' => $ this-> Age]; 
} 

 public function the __call ( $ funcname, $ myvals) 
{ 
 # Trigger timing, when the object calls a method does not exist # first parameter function name, a function of the second parameter --- in the form of an array composed var_dump ( $ funcname, $ myvals); } } $ CPC = new new mycoach ( ' Chenpei Chang ', 21 is); echo $ CPC; $ CPC-> wenheiwa (); $ CPC-> saiwa ([ "0" => [ "name" => "CPC", "Age" => 22 is], ". 1" => [ "name" => "CJ","age"=>20]]);
 
 

 输出结果：

upon melancholy hill     #实例化时调用了__construct()方法
working hard and party with cpc and cj   #打印对象时调用了__toString方法
string(8) "wenheiwa"  #对象调用了不存在的方法wenheiwa()执行了__call方法，由于函数没有参数，因此打印空
array(0) {
}
string(5) "saiwa"    #对象调用了不存在的方法saiwa()执行了__call方法，由于函数有参数，因此打印参数----其形式为数组
array(1) {
  [0]=>
  array(2) {
    [0]=>
    array(2) {
      ["name"]=>
      string(3) "cpc"
      ["age"]=>
      int(22)
    }
    [1]=>
    array(2) {
      ["name"]=>
      string(2) "cj"
      ["age"]=>
      int(20)
    }
  }
}