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is_file> <is_dir
[edit] Last updated: Fri, 17 May 2013

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is_executable

(PHP 4, PHP 5)

is_executableDice se il file indicato è eseguibile

Descrizione

bool is_executable ( string $filename )

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().



is_file> <is_dir
[edit] Last updated: Fri, 17 May 2013
 
add a note add a note User Contributed Notes is_executable - [3 notes]
up
0
david at littlesystems dot com dot au
11 years ago
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.
up
-2
DaveRandom
4 months ago
is_executable() cannot necessarily be relied upon to return sensible results on Windows. Unlike *nix, it does not check permissions, it uses the Windows API call GetBinaryType(), which checks specifically whether the file path is a binary executable file.

This means, crucially, that it will never return TRUE for batch files or other scripts that could otherwise be executed directly when called through the shell.

PHP source code ref: http://lxr.php.net/xref/PHP_5_4/TSRM/tsrm_win32.c#213

GetBinaryType() documentation: http://msdn.microsoft.com/en-gb/library/windows/desktop/aa364819(v=vs.85).aspx
up
-2
Buuyo
8 years ago
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/.");

 
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