is_executable

(PHP 4, PHP 5)

is_executable — Tells whether the filename is executable

설명

bool is_executable ( string $filename )

Tells whether the filename is executable.

인수

filename: Path to the file.

반환값

Returns TRUE if the filename exists and is executable, or FALSE on error.

변경점

버전	설명
5.0.0	is_executable() became available with Windows

예제

Example #1 is_executable() example


<?php

$file = '/home/vincent/somefile.sh';

if (is_executable($file)) {
    echo $file.' is executable';
} else {
    echo $file.' is not executable';
}

?>

오류/예외

Upon failure, an E_WARNING is emitted.

주의

Note: 이 함수의 결과는 캐시에 저장합니다. 자세한 설명은 clearstatcache()를 참고하십시오.

Tip

PHP 5.0.0부터 이 함수는 몇몇 URL 래퍼를 사용할 수 있습니다. 기능적으로 stat() 패밀리를 지원하는 래퍼 목록은 Supported Protocols and Wrappers를 참고하십시오.

참고

is_file() - Tells whether the filename is a regular file
is_link() - Tells whether the filename is a symbolic link

add a note User Contributed Notes is_executable

Buuyo 06-Aug-2004 03:51


The change doesn't appear to be documented, so I thought I would mention it. In php5, as opposed to php4, you can no longer rely on is_executable to check the executable bit on a directory in 'nix. You can still use the first note's method to check if a directory is traversable: 

     @file_exists("adirectory/.");

david at littlesystems dot com dot au 01-Jun-2002 11:38


to test whether the directory /home/david is executable (regardless of whether it is readable or writeable), issue the command:

$my_isWriteable = @file_exists("/home/david/.")



the @ gets rid of the warning when this command fails when the directory is not executable.

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