Manual do PHP
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# Phar::offsetExists

(no version information, might be only in CVS)

Phar::offsetExists -- determines whether a file exists in the phar

## Descrição

bool Phar::offsetExists ( string 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.

## Parâmetros

`offset`

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

## Valores de retornado

Returns `TRUE` if the file exists within the phar, or `FALSE` if not.

## Exemplos

Exemplo 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'])); ?>`
O exemplo acima irá imprimir:
    bool(true)
    bool(false)

## Veja também

Phar::offsetGet()
Phar::offsetSet()
Phar::offsetUnset()

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