PHP 构造函数未被调用?什么的


php constructor not getting called? or something?

当TestPage.php在浏览器中运行时,"尝试创建新的obj..."是回显的,但没有别的。构造函数没有被调用吗?

这不是这两个类的完整代码,但希望它足以让有人告诉我我哪里出错了......

测试页.php

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/plain; charset=UTF-8">
        <title></title>
    </head>
    <body>
        <?php
        class MyClass {
        $api_key = 'somestring';
        $username = 'username';
        echo 'trying to create new obj...';
        $myObj = new MyClass($api_key, $username);
        echo 'new obj created...';
    ...
        ?>
    </body>
</html>

我的班级.class.php

<?php
class MyClass {
    protected $_api_key;
    protected $_username;

    public function __construct($api_key, $username) {
        echo 'entered constructor...';
        $this->_api_key = $api_key;
        $this->_username = $username;
        echo 'leaving constructor...';
    }
    ...
}
?>

你需要把它定义为一个类。那看起来像:

class MyClass {
    protected $_api_key;
    protected $_username;

    public function __construct($api_key, $username) {
        echo 'entered constructor...';
        $this->_api_key = $api_key;
        $this->_username = $username;
        echo 'leaving constructor...';
    }
}

只是将您拥有的代码放在文件中并命名它本身不会做任何事情。

此外,如果尚未包含该文件,则需要包含该文件。像这样:

include 'MyClass.class.php';
你需要

class关键字来定义一个类,请 http://php.net/manual/en/language.oop5.basic.php 一些基本的例子

尝试

class MyClass
{
 protected $_api_key;
    protected $_username;

    public function __construct($api_key, $username) {
        echo 'entered constructor...';
        $this->_api_key = $api_key;
        $this->_username = $username;
        echo 'leaving constructor...';
    }
}