chroot函数使用

PHP chroot()函数 (PHP chroot() function)

The full form of chroot is "Change Root", the function chroot()" is used to change the root directory, and, also changes the current working directory to "/".

chroot的完整格式为“ Change Root” ， 函数chroot()“用于更改根目录，并且还将当前工作目录更改为” /“ 。

Syntax:

句法：

    chroot(directory);

Parameter(s):

参数：

• directory – It defines the new root directory.

  directory –它定义了新的根目录。

Return value:

返回值：

It returns a Boolean value, "TRUE" – if root directory changes successfully or "FALSE" – if root directory does not change.

如果根目录成功更改，则返回布尔值“ TRUE”；如果根目录未更改，则返回“ FALSE”。

Note:

注意：

chroot() will not work on Windows PHP installations. As per the reference manual, the function is only available on PHP when using in CLI/CGI/Embedded SAPI.

chroot()在Windows PHP安装中不起作用。 根据参考手册，仅在CLI / CGI / Embedded SAPI中使用时，该功能仅在PHP上可用。

The chroot() function requires root privileges. Please refer to the official php.net manual before attempting this function PHP chroot() function

chroot()函数需要root特权。 尝试使用此函数之前，请参考php.net官方手册PHP chroot()函数

We are not responsible in any way of any damage this function may cause.

对于此功能可能造成的任何损害，我们概不负责。

The following is a sample output of the program,

以下是程序的示例输出，

    When Success:
/
root directory is changed...
/home/folder1
When fail:
/
root directory is not changed...

Example: PHP code to change the root director

示例：更改root导演PHP代码

<?php
echo getcwd();
//making a directory
mkdir("/home/folder1");
// Change root directory
$ret_value = chroot("/home/folder1");
if($ret_value == true)
echo "root directory is changed...";
else    
echo "root directory is not changed...";
// Get current directory
echo getcwd();
?>

Output

输出量

root directory is changed...
/home/folder1

Reference: PHP chroot() function

参考： PHP chroot()函数

翻译自: https://www.includehelp.com/php/chroot-function-with-example.aspx

chroot函数使用