Edit Report a Bug

    is_executable

    (PHP 4, PHP 5, PHP 7, PHP 8)

    is_executable — Dice se il file indicato è eseguibile

    Descrizione

    is_executable(string $filename): bool

    Restituisce true se il filename esiste ed è un eseguibile.

    La funzione is_executable() sarà disponibile sui sistemi Windows a partire dalla versione 5.0.0 di PHP.

    Example #1 Esempio di uso di is_executable()

    <?php

    $file     = '/home/vincent/somefile.sh';

    if (    is_executable($file)) {
    echo     $file.' è eseguibile';
    } else {
    echo     $file.' non è eseguibile';
    }

    ?>

    Nota: I risultati di questa funzione saranno memorizzati. Vedere clearstatcache() per maggiori dettagli.

    Suggerimento

    A partire da PHP 5.0.0, questa funzione può essere utilizzata con alcuni URL wrappers. Fare riferimento a Supported Protocols and Wrappers per la lista di quali wrappers supportano le funzioni della famiglia stat().

    Vedere anche is_file() e is_link().

    add a note add a note

    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.
    add a note add a note
    To Top