PHP is_image函数代码示例

function download_file($file_id, $file_name)
{
    global $DATA_DIR;
    $file_path = $DATA_DIR . $file_id;
    if (file_exists($file_path)) {
        increment_file_downloads($file_id);
        $content_type = get_content_type($file_name);
        header("Content-type: {$content_type}");
        $user_agent = $_SERVER['HTTP_USER_AGENT'];
        if (!is_image($file_name)) {
            if (is_integer(strpos($user_agent, "msie")) && is_integer(strpos($user_agent, "win"))) {
                header("Content-Disposition:filename=\"{$file_name}\"");
            } else {
                header("Content-Disposition: attachment; filename=\"{$file_name}\"");
            }
            header("Content-Description: Download");
        }
        ob_clean();
        flush();
        readfile($file_path);
    } else {
        require_once 'dbo.php';
        header("HTTP/1.0 404 Not Found");
        echo "<h1>HTTP/1.0 404 Not Found</h1>";
        $link = "http://{$_SERVER['HTTP_HOST']}{$_SERVER['REQUEST_URI']}";
        echo "Sorry, file was not found.  Please notify <a href=\"mailto:webmaster@lmms.io" . "?subject=LSP 404&body=FYI: 404 Not Found: {$link}\">webmaster@lmms.io</a> of this error.";
    }
    exit;
}

 public function getFirstImage($module, $attachment_id, $attachment_name)
 {
     if ($attachment_id == "") {
         return "";
     }
     $attachment_id_array = explode(",", $attachment_id);
     $attachment_name_array = explode("*", $attachment_name);
     $array_count = sizeof($attachment_id_array);
     $i = 0;
     for (; $i < $array_count; ++$i) {
         if ($attachment_id_array[$i] == "") {
             continue;
         }
         $attachment_id1 = $attachment_id_array[$i];
         $ym = substr($attachment_id1, 0, strpos($attachment_id1, "_"));
         if ($ym) {
             $attachment_id1 = substr($attachment_id1, strpos($attachment_id, "_") + 1);
         }
         $attachment_id_encoded = attach_id_encode($attachment_id1, $attachment_name_array[$i]);
         $url_array = attach_url($attachment_id_array[$i], $attachment_name_array[$i], $module, $other);
         if (!is_image($attachment_name_array[$i])) {
             continue;
         }
         return "/inc/attach.php?MODULE=" . $module . "&YM=" . $ym . "&ATTACHMENT_ID=" . $attachment_id_encoded . "&ATTACHMENT_NAME=" . urlencode($attachment_name_array[$i]) . "&DIRECT_VIEW=1";
     }
     return "";
 }

 /**
  * The second last process, should only be getting everything
  * syntaxically correct, rather than doing any heavy processing
  *
  * @author Anthony Short
  * @return $css string
  */
 public static function post_process()
 {
     if ($found = CSS::find_properties_with_value('image-replace', 'url\\([\'\\"]?([^)]+)[\'\\"]?\\)')) {
         foreach ($found[4] as $key => $value) {
             $path = $url = str_replace("\\", "/", unquote($value));
             # If they're getting an absolute file
             if ($path[0] == "/") {
                 $path = DOCROOT . ltrim($path, "/");
             }
             # Check if it exists
             if (!file_exists($path)) {
                 FB::log("ImageReplace - Image doesn't exist " . $path);
             }
             # Make sure it's an image
             if (!is_image($path)) {
                 FB::log("ImageReplace - File is not an image: {$path}");
             }
             // Get the size of the image file
             $size = GetImageSize($path);
             $width = $size[0];
             $height = $size[1];
             // Make sure theres a value so it doesn't break the css
             if (!$width && !$height) {
                 $width = $height = 0;
             }
             // Build the selector
             $properties = "\n\t\t\t\t\tbackground:url({$url}) no-repeat 0 0;\n\t\t\t\t\theight:{$height}px;\n\t\t\t\t\twidth:{$width}px;\n\t\t\t\t\tdisplay:block;\n\t\t\t\t\ttext-indent:-9999px;\n\t\t\t\t\toverflow:hidden;\n\t\t\t\t";
             CSS::replace($found[2][$key], $properties);
         }
         # Remove any left overs
         CSS::replace($found[1], '');
     }
 }

function cpgUserLastComment($uid)
{
    global $CONFIG, $FORBIDDEN_SET;
    $result = cpg_db_query("SELECT COUNT(*), MAX(msg_id) FROM {$CONFIG['TABLE_COMMENTS']} AS c INNER JOIN {$CONFIG['TABLE_PICTURES']} AS p ON p.pid = c.pid WHERE approval = 'YES' AND author_id = '{$uid}' {$FORBIDDEN_SET}");
    list($comment_count, $lastcom_id) = mysql_fetch_row($result);
    mysql_free_result($result);
    $lastComArray = array('count' => 0);
    if ($comment_count) {
        $sql = "SELECT filepath, filename, url_prefix, pwidth, pheight, msg_author, UNIX_TIMESTAMP(msg_date) as msg_date, msg_body FROM {$CONFIG['TABLE_COMMENTS']} AS c INNER JOIN {$CONFIG['TABLE_PICTURES']} AS p ON p.pid = c.pid WHERE msg_id = {$lastcom_id}";
        $result = cpg_db_query($sql);
        if (mysql_num_rows($result)) {
            $row = mysql_fetch_assoc($result);
            $pic_url = get_pic_url($row, 'thumb');
            if (!is_image($row['filename'])) {
                $image_info = cpg_getimagesize(urldecode($pic_url));
                $row['pwidth'] = $image_info[0];
                $row['pheight'] = $image_info[1];
            }
            $image_size = compute_img_size($row['pwidth'], $row['pheight'], $CONFIG['thumb_width']);
            $lastcom = '<img src="' . $pic_url . '" class="image"' . $image_size['geom'] . ' border="0" alt="" />';
            $lastComArray = array('thumb' => $lastcom, 'comment' => $row['msg_body'], 'msg_date' => $row['msg_date'], 'count' => $comment_count);
        }
        mysql_free_result($result);
    }
    return $lastComArray;
}

function caching($comics_id, $zip_path, $image_ext)
{
    $comic = zip_open($zip_path);
    if (!is_resource($comic)) {
        die("[ERR]ZIP_OPEN : " . $zip_path);
    }
    $inzip_path = "";
    $count = 0;
    $files = null;
    $db = new SQLite3(DB);
    $db->exec("BEGIN DEFERRED;");
    while (($entry = zip_read($comic)) !== false) {
        $inzip_path = zip_entry_name($entry);
        $cache_name = md5($zip_path . "/" . $inzip_path) . '.' . get_ext($inzip_path);
        // 画像か否か
        if (!is_image($inzip_path, $image_ext)) {
            continue;
        }
        $data = zip_entry_read($entry, zip_entry_filesize($entry));
        $filepath = CACHE . '/' . $cache_name;
        file_put_contents($filepath, $data);
        $count++;
        query("INSERT INTO images (comics_id, page, filepath) VALUES (" . $comics_id . ", " . $count . ", '" . $filepath . "')", $db);
    }
    zip_close($comic);
    query("UPDATE comics SET pages = " . $count . " WHERE id = " . $comics_id, $db);
    $db->exec("COMMIT;");
}

function create_gallery()
{
    global $types_ok;
    $chemin = "images/projects_filtres";
    if ($handle = opendir($chemin)) {
        $img = '';
        $count = 0;
        while (($filename = readdir($handle)) !== FALSE) {
            $count++;
            // c'est une image?
            $chemin_image = $chemin . '/' . $filename;
            if (!is_dir($chemin_image)) {
                if (is_image($chemin_image)) {
                    $tab_ficher = explode('.', $filename);
                    // Le nom du fichier [1]= extension
                    $tab_details_nom = explode('-', $tab_ficher[0]);
                    $tab_filtres = explode('_', $tab_details_nom[1]);
                    // var_dump($tab_filtres);
                    $filters = implode(' ', $tab_filtres);
                    echo '<li class="element ' . $filters . '">';
                    echo '<a href="' . $chemin_image . '"><img src="images/projects/img' . $count . '.jpg" alt="" /></a>';
                    echo '</li>';
                }
            }
        }
    }
}

 /**
  * Update the specified resource in storage.
  *
  * @param  \Illuminate\Http\Request $request
  * @param  int $mcid
  * @return \Illuminate\Http\Response
  */
 public function update(Request $request, $mcid_id)
 {
     $this->validate($request, ['file' => 'required']);
     $mcid = MCID::findOrFail($mcid_id);
     $file = $_FILES['file'];
     $fileName = md5($mcid_id . $file['name'] . time());
     $path = str_finish($this->skin_path, '/') . $fileName;
     $content = File::get($file['tmp_name']);
     if (is_image($file['type']) && $file['size'] <= 150 * 1000) {
         list($img_w, $img_h) = getimagesize($file['tmp_name']);
         if ($img_w > 64 || $img_h > 64) {
             $error = "皮肤文件 '{$fileName}' 尺寸不正确.";
         } else {
             $result = $this->manager->saveFile($path, $content);
             if ($result === true) {
                 $skin = Skin::where('mcid_id', $mcid->id)->first();
                 if ($skin == null) {
                     $skin = new Skin();
                 }
                 $skin->mcid_id = $mcid->id;
                 $skin->url = $path;
                 $skin->save();
                 return redirect()->back()->withSuccess("皮肤文件 '{$fileName}' 上传成功.");
             } else {
                 $error = $result ?: "皮肤文件 '{$fileName}' 上传失败.";
             }
         }
     } else {
         $error = "皮肤文件 '{$fileName}' 格式或大小不正确.";
     }
     return redirect()->back()->withErrors([$error]);
 }

function get_images_list()
{
    $S = array();
    foreach (scandir(IDIR) as $O) {
        $I = IDIR . $O;
        if (is_image($I) && is_readable($I)) {
            array_push($S, $O);
        }
    }
    return $S;
}

function get_images_list()
{
    // Return a list of readable images in IDIR
    $images_list = array();
    foreach (scandir(IDIR) as $fname) {
        $fpath = IDIR . $fname;
        if (is_image($fpath) && is_readable($fpath)) {
            array_push($images_list, $fname);
        }
    }
    return $images_list;
}

function upurlsav($dr, $o, $u)
{
    $u = ajxg($u);
    if (!is_image($u)) {
        return 'no';
    }
    $ret = get_file($u);
    $nm = strrchr($u, '/');
    $f = 'users/' . $dr . '/' . $nm;
    write_file($f, $ret);
    return 'ok';
}

function is_lsp_image($file_path)
{
    if (!is_image($file_path) || explode("download_file.php", $file_path) < 2) {
        return false;
    }
    $parsed = parse_url($file_path);
    if (isset($parsed['query'])) {
        $query = array();
        parse_str($parsed['query'], $query);
        return $query['file'];
    }
    return false;
}

function ifrget($a, $b, $f)
{
    $f = ajxg($f);
    if ($f) {
        $f = str_replace(array("\n", "\r"), ' ', $f);
        $r = explode(' ', $f);
        foreach ($r as $v) {
            $d = curl_get_contents($v);
            if (is_image($v) && $d) {
                $ret .= ifrim($v, $d);
            }
        }
    }
    return $ret;
}

 /**
  * Create filename-mirrored thumbnails for the given directory stub (mirrors stub/foo with stub_thumbs/foo).
  *
  * @param  string		Directory to mirror
  */
 function directory_thumb_mirror($dir)
 {
     require_code('images');
     $full = get_custom_file_base() . '/uploads/' . $dir;
     $dh = @opendir($full);
     if ($dh !== false) {
         while (($file = readdir($dh)) !== false) {
             $target = get_custom_file_base() . '/' . $dir . '_thumbs/' . $file;
             if (!file_exists($target) && is_image($full . '/' . $file)) {
                 require_code('images');
                 convert_image($full . '/' . $file, $target, -1, -1, intval(get_option('thumb_width')));
             }
         }
     }
     closedir($dh);
 }

function ifrget($a, $b, $f)
{
    $f = ajxg($f);
    $f = http($f);
    if ($f) {
        $ret = curl_get_contents($f);
        if (is_image($f) && $ret) {
            $ret = ifrim($f, $ret);
        }
    }
    $encoding = embed_detect(strtolower($ret), "charset=", '"', "");
    if (strtolower($encoding) == "utf-8" or strpos($ret, 'é')) {
        $ret = utf8_decode_b($ret);
    }
    return $ret;
}

 /**
  * Retrieve image thumbnail
  * 
  * @param  string $mime
  * @return string
  */
 function get_thumbnail($mime, $forImage)
 {
     if (is_image($mime)) {
         return $forImage;
     } elseif (is_video($mime)) {
         return "/vendor/inoplate-media/images/medias/video_128px.png";
     } elseif (is_audio($mime)) {
         return "/vendor/inoplate-media/images/medias/music_128px.png";
     } elseif ($mime == 'application/excel' || $mime == 'application/vnd.ms-excel' || $mime == 'application/x-excel' || $mime == 'application/x-msexcel') {
         return "/vendor/inoplate-media/images/medias/xls_128px.png";
     } elseif ($mime == 'application/mspowerpoint' || $mime == 'application/powerpoint' || $mime == 'application/vnd.ms-powerpoint' || $mime == 'application/x-mspowerpoint') {
         return "/vendor/inoplate-media/images/medias/xls_128px.png";
     } else {
         return "/vendor/inoplate-media/images/medias/file_128px.png";
     }
 }