PHP glob() 函数用法

glob() 函数返回匹配指定模式的文件名或目录。

该函数返回一个包含有匹配文件 / 目录的数组。如果出错返回 false。

语法

array glob ( string $pattern [, int $flags = 0 ] )

<?php
print_r(glob("*.txt"));
?>

Array
(
[0] => target.txt
[1] => source.txt
[2] => test.txt
[3] => test2.txt
)
You can fetch multiple file types like this:

// get all php files AND txt files
$files = glob('*.{php,txt}', GLOB_BRACE);  

print_r($files);
/* output looks like:
Array
(
    [0] => phptest.php
    [1] => pi.php
    [2] => post_output.php
    [3] => test.php
    [4] => log.txt
    [5] => test.txt
)
*/  

Note that the files can actually be returned with a path, depending on your query:

$files = glob('../images/a*.jpg');  

print_r($files);
/* output looks like:
Array
(
    [0] => ../images/apple.jpg
    [1] => ../images/art.jpg
)
*/  

If you want to get the full path to each file, you can just call the realpath() function on the returned values:

$files = glob('../images/a*.jpg');  

// applies the function to each array element
$files = array_map('realpath',$files);  

print_r($files);
/* output looks like:
Array
(
    [0] => C:\wamp\www\images\apple.jpg
    [1] => C:\wamp\www\images\art.jpg
)
*/  

http://php.net/manual/en/function.glob.php