Phar
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Phar::mount

(PHP >= 5.3.0, PECL phar >= 2.0.0)

Phar::mountMount an external path or file to a virtual location within the phar archive

说明

void Phar::mount ( string $pharpath , string $externalpath )

Much like the unix file system concept of mounting external devices to paths within the directory tree, Phar::mount() allows referring to external files and directories as if they were inside of an archive. This allows powerful abstraction such as referring to external configuration files as if they were inside the archive.

参数

pharpath

The internal path within the phar archive to use as the mounted path location. If executed within a phar archive, this may be a relative path, otherwise this must be a full phar URL.

externalpath

A path or URL to an external file or directory to mount within the phar archive

返回值

No return. PharException is thrown on failure.

错误/异常

Throws PharException if any problems occur mounting the path.

范例

Example #1 A Phar::mount() example

The following example shows accessing an external configuration file as if it were a path within a phar archive.

First, the code inside of a phar archive:

<?php
$configuration 
simplexml_load_string(file_get_contents(
    
Phar::running(false) . '/config.xml'));
?>

Next the external code used to mount the configuration file:

<?php
// first set up the association between the abstract config.xml
// and the actual one on disk
Phar::mount('phar:///path/to/archive.phar/config.xml''/home/example/config.xml');
// now run the application
include '/path/to/archive.phar';
?>

Another method is to put the mounting code inside the stub of the phar archive. Here is an example of setting up a default configuration file if no user configuration is specified:

<?php
// first set up the association between the abstract config.xml
// and the actual one on disk
if (defined('EXTERNAL_CONFIG')) {
    
Phar::mount('config.xml'EXTERNAL_CONFIG);
    if (
file_exists(__DIR__ '/extra_config.xml')) {
        
Phar::mount('extra.xml'__DIR__ '/extra_config.xml');
    }
} else {
    
Phar::mount('config.xml''phar://' __FILE__ '/default_config.xml');
    
Phar::mount('extra.xml''phar://' __FILE__ '/default_extra.xml');
}
// now run the application
include 'phar://' __FILE__ '/index.php';
__HALT_COMPILER();
?>

...and the code externally to load this phar archive:

<?php
define
('EXTERNAL_CONFIG''/home/example/config.xml');
// now run the application
include '/path/to/archive.phar';
?>


Phar
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程