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(PHP 4, PHP 5)
file_exists — Checa se um arquivo ou diretório existe
Verifica se um arquivo ou diretório existe.
Caminho para o arquivo ou diretório.
No Windows, use //computername/share/filename ou \\\\computername\share\filename para checar arquivos em compartilhamentos de rede.
Retorna TRUE se o arquivo ou diretório especificado por filename existe; FALSE caso contrário.
Nota: Esta função retornará FALSE para links simbólicos apontando para arquivos inexistentes.
Esta função retorna FALSE para arquivos inacessíveis devido à restrições do safe mode. Contudo, estes arquivos ainda podem ser incluídos se eles estão localizado no safe_mode_include_dir.
Nota: A verificação é feita usando o real UID/GID ao invés do efetivo.
Exemplo #1 Testando se um arquivo existe
<?php
$filename = '/caminho/para/qualquer.txt';
if (file_exists($filename)) {
echo "O arquivo $filename existe";
} else {
echo "O arquivo $filename não existe";
}
?>
Nota: O resultado desta função é cacheada. Veja clearstatcache() para mais detalhes.
A partir do PHP 5.0.0, esta função também pode ser utilizada com alguns wrappers URL. Veja List of Supported Protocols/Wrappers para uma lista de quais wrappers são suportados pela família de funções stat().
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angielski