Loads any phar archive with an alias

# Phar::loadPhar

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL phar >= 1.0.0)

Phar::loadPhar — Loads any phar archive with an alias

### 说明

final public static function Phar::loadPhar(string `$filename`, ?string `$alias` = `null`): bool

This can be used to read the contents of an external Phar archive. This is most useful for assigning an alias to a phar so that subsequent references to the phar can use the shorter alias, or for loading Phar archives that only contain data and are not intended for execution/inclusion in PHP scripts.

### 参数

`filename`

  the full or relative path to the phar archive to open

`alias`

  The alias that may be used to refer to the phar archive. Note that many phar archives specify an explicit alias inside the phar archive, and a PharException will be thrown if a new alias is specified in this case.

### 返回值

成功时返回 `true`， 或者在失败时返回 `false`。

### 错误／异常

PharException is thrown if an alias is passed in and the phar archive already has an explicit alias

### 示例

示例 #1 A Phar::loadPhar() example

Phar::loadPhar can be used anywhere to load an external Phar archive, whereas Phar::mapPhar should be used in a loader stub for a Phar.

    <?php
    try {
        Phar::loadPhar('/path/to/phar.phar', 'my.phar');
        echo file_get_contents('phar://my.phar/file.txt');
    } catch (PharException $e) {
        echo $e;
    }
    ?>

### 参见

- Phar::mapPhar() - Reads the currently executed file (a phar) and registers its manifest

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