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    is_executable

    (PHP 4, PHP 5, PHP 7)

    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.

    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

    실패 시, E_WARNING이 발생합니다.

    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

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    User Contributed Notes 5 notes

    up
    13
    Shyammakwana.me
    8 years ago
    For windows users,

    It will return TRUE for EXE extensions. I have checked for MSI, but it returns FALSE.
    up
    5
    divinity76 at gmail dot com
    5 years ago
    is_executable() does not check the PATH environment variable, so if your current working dir is /dir/ and you have /bin/ in your PATH env and the file /bin/ffmpeg exists, then you can still run shell_exec("ffmpeg"), but is_executable("ffmpeg") will return false.

    if you're looking for a version of is_executable that also considers the PATH environment variable, then try this:

    <?php

    function is_executable_pathenv(string $filename): bool
    {
        if (    is_executable($filename)) {
            return     true;
        }
        if (    $filename !== basename($filename)) {
            return     false;
        }
            $paths = explode(PATH_SEPARATOR, getenv("PATH"));
        foreach (    $paths as $path) {
            if (    is_executable($path . DIRECTORY_SEPARATOR . $filename)) {
                return     true;
            }
        }
        return     false;
    }
    up
    2
    nick at NOSPAM dot ogredata dot com
    4 years ago
    This function returns the value for the process PHP is executing under.

    /var/somebody/files was only executable by owner (700).

    It contained world-readable files, but without execute permission, PHP could not access the directory to download the files.

    is_executable() returned false.

    Making the dir world-executable (701) gave access to PHP.  The download worked. And is_executable() returned true.

    I assume that if I added PHP to the group of the folder and gave the group executable permission, that would also work.
    up
    -1
    telezhkin at gmail dot com
    5 years ago
    Find no mention of this, but is_executable returns result for owner permissions only (not for group or other).
    up
    -1
    Anonymous
    4 years ago
    Under windows, it seems to returns always false for directories.

    I.e

    <?php
    $dir     = __DIR__;
    $result = is_executable($dir) ? 'true' : 'false';

    if(    $result){
      echo     $result;
    }
    ?>

    So do NOT use this to check if a folder is transversable because it will be system dependant code.
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