PHP 文件访问
在PHP语言之中，常用的有四种文件访问方法，分别为**”include“、”require“、”include_once“、”require_once”**四种，使用方法如下：
include
indexef.php
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| <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>demo</title>
</head>
<body>
<?php
$one = "Hello,";
$two = "World!";
?>
</body>
</html>
|
index.php
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| <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>demo</title>
</head>
<body>
<?php
include 'indexef.php';
echo "$one $two";
?>
</body>
</html>
|
文件错误提示
require
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| <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>demo</title>
</head>
<body>
<?php
require 'indexef.php';
echo "$one $two";
echo "<br>";
?>
</body>
</html>
|
错误提示
‘
include_once!
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| <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>demo</title>
</head>
<body>
<?php
include_once 'indexef.php';
echo "$one $two";
echo "<br>";
?>
</body>
</html>
|
文件错误提示
require_once
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| <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>demo</title>
</head>
<body>
<?php
require_once 'indexef.php';
echo "$one $two";
?>
</body>
</html>
|
| ID |
DA |
FA |
| include |
用于访问文件[^one.php可以使用two.php的相关函数] |
|
| require |
用于访问文件[^one.php可以使用two.php的相关函数] |
|
| include_once |
用于访问文件[^one.php可以使用two.php的相关函数] |
|
| require_once |
用于访问文件[^one.php可以使用two.php的相关函数] |
|
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