PHP get_document_root函数代码示例

function fix_file_path($file_path)
{
    if (!is_remote_file($file_path) && !file_exists($file_path)) {
        $file_path = preg_replace("/\\/{2,}/", "/", get_document_root() . "/" . $file_path);
    }
    return $file_path;
}

function clean_source($src)
{
    $host = str_replace('www.', '', $_SERVER['HTTP_HOST']);
    $regex = "/^((ht|f)tp(s|):\\/\\/)(www\\.|)" . $host . "/i";
    $src = preg_replace($regex, '', $src);
    $src = strip_tags($src);
    $src = check_external($src);
    // remove slash from start of string
    if (strpos($src, '/') === 0) {
        $src = substr($src, -(strlen($src) - 1));
    }
    // don't allow users the ability to use '../'
    // in order to gain access to files below document root
    $src = preg_replace("/\\.\\.+\\//", "", $src);
    // get path to image on file system
    $src = get_document_root($src) . '/' . $src;
    return $src;
}

/**
 * tidy up the image source url
 *
 * @param <type> $src
 * @return string
 */
function clean_source($src)
{
    $host = str_replace('www.', '', $_SERVER['HTTP_HOST']);
    $regex = "/^(http(s|):\\/\\/)(www\\.|)" . $host . "\\//i";
    $src = preg_replace($regex, '', $src);
    $src = strip_tags($src);
    $src = str_replace(' ', '%20', $src);
    $src = check_external($src);
    // remove slash from start of string
    if (strpos($src, '/') === 0) {
        $src = substr($src, -(strlen($src) - 1));
    }
    // don't allow users the ability to use '../'
    // in order to gain access to files below document root
    $src = preg_replace("/\\.\\.+\\//", "", $src);
    // get path to image on file system
    $src = get_document_root($src) . '/' . $src;
    if (!is_file($src)) {
        display_error('source is not a valid file');
    }
    if (filesize($src) > MAX_FILE_SIZE) {
        display_error('source file is too big (filesize > MAX_FILE_SIZE)');
    }
    if (filesize($src) <= 0) {
        display_error('source file <= 0 bytes. Possible external file download error (file is too large)');
    }
    return realpath($src);
}

/**
 * tidy up the image source url
 */
function cleanSource($src) {

	// remove slash from start of string
	if(strpos($src, "/") == 0) {
		$src = substr($src, -(strlen($src) - 1));
	}

	// remove http/ https/ ftp
	$src = preg_replace("/^((ht|f)tp(s|):\/\/)/i", "", $src);
	// remove domain name from the source url
	$host = $_SERVER["HTTP_HOST"];
	$src = str_replace($host, "", $src);
	$host = str_replace("www.", "", $host);
	$src = str_replace($host, "", $src);

	// don't allow users the ability to use '../' 
	// in order to gain access to files below document root

	// src should be specified relative to document root like:
	// src=images/img.jpg or src=/images/img.jpg
	// not like:
	// src=../images/img.jpg
	$src = preg_replace("/\.\.+\//", "", $src);
	
	// get path to image on file system
	$src = get_document_root($src) . '/' . $src;	

	return $src;

}

// http://code.google.com/p/timthumb/
// MIT License: http://www.opensource.org/licenses/mit-license.php
/* Parameters allowed: */
// w: width
// h: height
// zc: zoom crop (0 or 1)
// q: quality (default is 75 and max is 100)
// HTML example: <img src="/scripts/timthumb.php?src=/images/whatever.jpg&w=150&h=200&zc=1" alt="" />
error_reporting(E_ALL);
if (!isset($_REQUEST["src"])) {
    die("no image specified");
}
// clean params before use
$src = clean_source($_REQUEST["src"]);
// set document root
$doc_root = get_document_root($src);
// get path to image on file system
$src = $doc_root . '/' . $src;
$new_width = preg_replace("/[^0-9]+/", "", get_request('w', 100));
$new_height = preg_replace("/[^0-9]+/", "", get_request('h', 100));
$zoom_crop = preg_replace("/[^0-9]+/", "", get_request('zc', 1));
$quality = preg_replace("/[^0-9]+/", "", get_request('9', 80));
// set path to cache directory (default is ./cache)
// this can be changed to a different location
$cache_dir = './cache';
// get mime type of src
$mime_type = mime_type($src);
// check to see if this image is in the cache already
//check_cache($cache_dir, $mime_type);
// make sure that the src is gif/jpg/png
if (!valid_src_mime_type($mime_type)) {

function get_media_code($media_file_name, $image_id = 0, $cat_id = 0, $image_name = "", $mode = "", $show_link = 0, $detailed_view = 0)
{
    global $site_template, $site_sess, $lang, $mode;
    if (!get_file_path($media_file_name, "media", $cat_id, 0, 0)) {
        $media = "<img src=\"" . ICON_PATH . "/404.gif\" border=\"0\" alt=\"\" />";
        $site_template->register_vars("iptc_info", "");
        $site_template->register_vars("exif_info", "");
    } else {
        $media_src = get_file_path($media_file_name, "media", $cat_id, 0, 1);
        $file_extension = get_file_extension($media_file_name);
        $media_icon = "<img src=\"" . ICON_PATH . "/" . $file_extension . ".gif\" border=\"0\" alt=\"" . format_text($image_name, 2) . "\" />";
        if ($show_link) {
            $media_icon = "<a href=\"" . $site_sess->url(ROOT_PATH . "details.php?" . URL_IMAGE_ID . "=" . $image_id . (!empty($mode) ? "&amp;mode=" . $mode : "")) . "\">" . $media_icon . "</a>";
        }
        $width_height = "";
        $width = "";
        $height = "";
        $iptc_info = "";
        $exif_info = "";
        if (!is_remote($media_src)) {
            $src = !file_exists($media_src) && file_exists(preg_replace("/\\/{2,}/", "/", get_document_root() . "/" . $media_src)) ? preg_replace("/\\/{2,}/", "/", get_document_root() . "/" . $media_src) : $media_src;
            if (in_array(strtolower($file_extension), array('gif', 'jpg', 'jpeg', 'png', 'swf')) && ($image_info = @getimagesize($src, $info))) {
                $width_height = " " . $image_info[3];
                $width = $image_info[0];
                $height = $image_info[1];
                if ($detailed_view && isset($info['APP13'])) {
                    $iptc_array = get_iptc_info($info['APP13']);
                    $bgcounter = 0;
                    foreach ($iptc_array as $key => $val) {
                        $row_bg_number = $bgcounter++ % 2 == 0 ? 1 : 2;
                        $site_template->register_vars(array("iptc_value" => format_text($val), "iptc_name" => $lang['iptc_' . $key], "row_bg_number" => $row_bg_number));
                        $iptc_info .= $site_template->parse_template("iptc_bit");
                    }
                }
                if ($detailed_view && $image_info[2] == 2 && function_exists('exif_read_data') && ($exif_data = @exif_read_data($src, 'EXIF'))) {
                    $exif_array = get_exif_info($exif_data);
                    $bgcounter = 0;
                    foreach ($exif_array as $key => $val) {
                        $row_bg_number = $bgcounter++ % 2 == 0 ? 1 : 2;
                        $site_template->register_vars(array("exif_value" => format_text($val), "exif_name" => $lang['exif_' . $key], "row_bg_number" => $row_bg_number));
                        $exif_info .= $site_template->parse_template("exif_bit");
                    }
                }
            }
        }
        $site_template->register_vars(array("media_src" => $media_src, "media_icon" => $media_icon, "image_name" => format_text($image_name, 2), "width_height" => $width_height, "width" => $width, "height" => $height, "iptc_info" => $iptc_info, "exif_info" => $exif_info));
        $media = $site_template->parse_template("media/" . $file_extension);
    }
    return $media;
}