PHP--Object output of the Magic Method: __tostring ()

Object output: __tostring ()

When an object is output as a string (Echo,print), the __tostring () method is called

<?PHP//Output Object    classperson{//Properties         Public$name; Private$age; //Method         Publicfunction __construct ($name, $age) {$ This->name =$name; $ This->age =$age; }         Publicfunction Setage ($age) {$ This->age =$age; }         Publicfunction Getage () {return$ This-Age ; }        //object to String method//requires that only data of type string be returned         Publicfunction __tostring () {//return the properties of the object you want to output//organizing the language for output (controlling the output of attributes)            return(string)($ This->name.':'. $ This-Age ); }    }    //instantiation of$person =NewPerson ('Zhou Zhijo', the); //Var_dump ($person); //Echo $person; //object cannot be exported as a string//Requirements: Echo object, all attributes in the output object (all attributes are concatenated into a single string)Echo $person;

PHP--Object output of the Magic Method: __tostring ()