PHP 文件系统函数之获取文件名及文件名后缀-php文件

获取文件名（包含扩展）:

1.用PHP 文件函数 basename获取

例：

$filename = "/home/httpd/html/index.php";

$file = basename($filename);

2.先获取位置再获取文件名

例:

$filename = "/home/httpd/html/index.php";

$pos = strrpos($filename, '/');

if ($pos === false)

{ // dot is not found in the filename

$file = $filename;

}

else

{

$basename = substr($filename, ($pos+1));

$file = $basename;

}

3.用文件路径分隔符

例：

$filename = "/home/httpd/html/index.php";

$file= end( explode( "/", $filename ) );

4.用pathinfo

例：

$filename = "/home/httpd/html/index.php";

$path_parts = pathinfo($filename);

$file = $path_parts[‘basename’]

5.用正则匹配

例:

$filename = "/home/httpd/html/index.php";

preg_match('/\/([^\/]+\..*)$/', $filename, $matches);

if($matches){

$file = $matches[1];

}

6.用数组弹出最后一个元素

$filename = "/home/httpd/html/index.php";

$file = array_pop(explode('/', $filename));