is_executable

(PHP 3, PHP 4 , PHP 5)

is_executable -- Tells whether the filename is executable

Description

bool is_executable ( string filename)

Returns TRUE if the filename exists and is executable.

is_executable() became available with Windows in PHP version 5.0.0.

示範 1.is_executable() example

<?php

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

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

?>

備注:此函數的結果會被快取。詳細資訊請參考 clearstatcache()

心得:As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to 附錄 L for a listing of which wrappers support stat() family of functionality.

See also is_file() and is_link().