每当我们包含\需要一些使用php的文件
require ('links.php');
或include ('links.php');
以下两种情况之一发生
示例
假设文件file.php
包含以下代码
<?php
echo "my things";
?>
<br />
我们将此包含在
中------
------
<?php
echo "about to include file";
include ('file.php')
?>
------
------
情景1: 将包含的文件的代码插入到父代\容器文件PHP代码中,然后处理完整的代码并进行处理。 HTML \ result生成....
意思是,首先将此代码放在首位,如
------
------
<?php
echo "about to include file";
<?php
echo "my things";
?>
<br />
?>
------
------
然后处理
情景2: 首先处理包含的文件,并将结果插入
意味着首先处理包含文件并获得结果
mythings<br/>
然后将它放在parent \ container \ includer代码中,然后代码将被处理为neaning
------
------
<?php
echo "about to include file";
my things<br />
?>
------
------
现在它将被处理
答案 0 :(得分:4)
嗯,这可能不是最容易理解的只有“包含”名称......
所以 - 当你做
时会发生什么<?php
echo "including now...";
include "myFile.php";
echo "blah";
?>
然后基本上会这样:
<?php
echo "including now...";
?>
CONTENTS OF myFile.php HERE
<?php
echo "blah";
?>
意味着在您的示例中它看起来像这样:
<?php
echo "about to include file";
?>
<?php
echo "my things";
?>
<br />
<?php
?>
答案 1 :(得分:1)
情景一。 include
是一种在代码行“注入”代码的简单机制。
作为历史花絮,在PHP 4.1之前,即使语句处于从未执行的块或条件中,include
也会被处理。除此之外,PHP没有任何可以接近你的场景2的东西。
答案 2 :(得分:1)
是场景一。
另请注意require
只会输入一次代码!这样:
<?php
echo "about to include file";
require ('file.php');
require ('file.php');
require ('file.php');
echo "included the file";
?>
将产生:
<?php
echo "about to include file";
?><?php
echo "my things";
?>
<br /><?
echo "included the file";
?>
,而:
<?php
echo "about to include file";
include ('file.php');
include ('file.php');
include ('file.php');
echo "included the file";
?>
将产生:
<?php
echo "about to include file";
?><?php
echo "my things";
?>
<br /><?php
echo "my things";
?>
<br /><?php
echo "my things";
?>
<br /><?php
echo "included the file";
?>