php教程

Phar::offsetGet

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

Phar::offsetGetGets a PharFileInfo object for a specific file

说明

public Phar::offsetGet ( string $offset ) : int

This is an implementation of the ArrayAccess interface allowing direct manipulation of the contents of a Phar archive using array access brackets. Phar::offsetGet() is used for retrieving files from a Phar archive.

参数

offset

The filename (relative path) to look for in a Phar.

返回值

A PharFileInfo object is returned that can be used to iterate over a file's contents or to retrieve information about the current file.

错误/异常

This method throws BadMethodCallException if the file does not exist in the Phar archive.

范例

Example #1 Phar::offsetGet() example

As with all classes that implement the ArrayAccess interface, Phar::offsetGet() is automatically called when using the [] angle bracket operator.

<?php
$p 
= new Phar(dirname(__FILE__) . '/myphar.phar'0'myphar.phar');
$p['exists.txt'] = "file exists\n";
try {
    
// automatically calls offsetGet()
    
echo $p['exists.txt'];
    echo 
$p['doesnotexist.txt'];
} catch (
BadMethodCallException $e) {
    echo 
$e;
}
?>

以上例程会输出:

file exists
Entry doesnotexist.txt does not exist

参见

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