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このドキュメントでは、 php中国語ネットマニュアル リリース
(PHP >= 5.3.0, PECL phar >= 1.0.0)
Phar::offsetExists — determines whether a file exists in the phar
$offset
)This is an implementation of the ArrayAccess interface allowing direct manipulation of the contents of a Phar archive using array access brackets.
offsetExists() is called whenever isset() is called.
offset
The filename (relative path) to look for in a Phar.
Returns TRUE
if the file exists within the phar, or FALSE
if not.
Example #1 A Phar::offsetExists() example
<?php
$p = new Phar ( dirname ( __FILE__ ) . '/my.phar' , 0 , 'my.phar' );
$p [ 'firstfile.txt' ] = 'first file' ;
$p [ 'secondfile.txt' ] = 'second file' ;
// the next set of lines call offsetExists() indirectly
var_dump (isset( $p [ 'firstfile.txt' ]));
var_dump (isset( $p [ 'nothere.txt' ]));
?>
以上例程会输出:
bool(true) bool(false)