PHP类不会在适当的地方回显另一个php页面 [英] PHP class doesn't echo another php page at the appropriate place
问题描述
好吧，我使用一个页面创建类，我发现如下，但是当我想使用一个php页面 - 再次包括和使用类文件 - 内容，它回声在顶部或底部页面...我甚至试图使页面一个函数（），并调用它的$ Content字符串，但没有使用，它再次在页面的顶部...如何使用PHP页面作为内容这个类，或者我应该改变为使用php文件？
Alright, I'm using a page creating class I found as below but when I want to use a php page -that again includes and uses a class file- for the content it either echoes on the top or the bottom of the page... I even tried to make the page a function() and call it at the $Content string but no use, again it echoed on the top of the page... How can i use a php page as a content in this class, or what should i change to use a php file?
请记住，我是新的类，所以可以随意假定一些初学者的错误。 / p>
Please keep in mind that I'm new to classes so feel free to assume some beginner mistakes.
<?php
class Page {
var $Title;
var $Keywords;
var $Content;
function Display( ) {
echo "<HTML>\n<HEAD>\n";
$this->DisplayTitle( );
$this->DisplayKeywords( );
echo "\n</HEAD>\n<BODY>\n";
echo $this->Content;
echo "\n</BODY>\n</HTML>\n";
}
function DisplayTitle( ) {
echo "<TITLE>" . $this->Title . "</TITLE>\n";
}
function DisplayKeywords( ) {
echo '<META NAME="keywords" CONTENT="' . $this->Keywords . '">';
}
function SetContent( $Data ) {
$this->Content = $Data;
}
}
?>
用法：
<?php
include "page.class";
$Sample = new Page;
$Content = "<P>I want my php file's contents here.</P>";
$Sample->Title = "Using Classes in PHP";
$Sample->Keywords = "PHP, Classes";
$Sample->SetContent( $Content );
$Sample->Display( );
?>
如果我想让内容像$ Content =<？echo'test' ;？>;我知道这是无效的，但我想做的是类似的东西，像$ Content =whateversinhere.php的输出;。
What if I wanted to make the content something like $Content = " < ? echo 'test'; ? >"; I know this isn't valid but what i'm trying to do is something like that or something like $Content = " output of the whateversinhere.php ";. how should I object orient another page therefore getting its contents into a string here?
推荐答案
你不应该在类中回显任何内容，相反，类应该有一个方法getMarkup（），它将返回一个包含整个标记的字符串。
You should NOT echo anything inside your class, instead the class should have a method getMarkup(), which will return a string containing the whole markup. Then you can echo that string in your view.
其他小费：
- 将您的变量设置为私有的（private $ title，变量和方法名称以小写字母开头
<等）
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