[PHP面向对象]①①--__tostring()/__invoke

Paste_Image.png

Paste_Image.png

<?php

class MagicTest
{
    public function __toString()
    {
        return "This is the Class MaginTest.";
    }

    public function __invoke($x)
    {
        echo "__invoke called with parameter " . $x . "<br/>";
    }
}

$obj = new MagicTest();
echo $obj . "<br/>";//This is the Class MaginTest.
//如果不实现__tostring方法会报错Catchable fatal error
$obj(5);//__invoke called with parameter 5

Paste_Image.png