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PHP : Function Reference : Filesystem Functions : is_executable

is_executable

Tells whether the filename is executable (PHP 4, PHP 5)
bool is_executable ( string filename )

Tells whether the filename is executable.

Parameters

filename

Path to the file.

Return Values

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

ChangeLog

Version Description
5.0.0 is_executable() became available with Windows

Examples

Example654.is_executable() example

<?php

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

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

?>


Notes

Note:

The results of this function are cached. See clearstatcache() for more details.

Tip:

As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to AppendixO, List of Supported Protocols/Wrappers for a listing of which wrappers support stat() family of functionality.

See Also
is_file()
is_link()

Related Examples ( Source code ) » is_executable



Code Examples / Notes » is_executable

drtebi

[Editor's Note: This is the expected behavior (at least on most Unix-like systems).  If a directory is not executable, then you cannot get details on the files in the directory - this includes the permissions.
--zak@php.net]
This does not work on directories!
look at this example:
if(is_file("foo/bar"))
 print "found it";
if "bar" exists, but directory "foo" is not executable, you will NOT get "found it" as result.


david

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.


buuyo

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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