PHP Gallery无法在图库中正确显示前两个图像

Question

无论出于何种原因，我在网站上拥有的每个图库中的前两个图像均未正确显示。我查看了页面源代码，发现了这一点：

<td><a href="javascript:imgSubmit('image.php?gallery=053&imgnum=1');"><img src="/galleries/053/thumbs/." class="thumb_img" border="0" /></a></td>
<td><a href="javascript:imgSubmit('image.php?gallery=053&imgnum=2');"><img src="/galleries/053/thumbs/.." class="thumb_img" border="0" /></a></td>
<td><a href="javascript:imgSubmit('image.php?gallery=053&imgnum=3');"><img src="/galleries/053/thumbs/053img009.jpg" class="thumb_img" border="0" /></a></td>
<td><a href="javascript:imgSubmit('image.php?gallery=053&imgnum=4');"><img src="/galleries/053/thumbs/053img008.jpg" class="thumb_img" border="0" /></a></td>
<td><a href="javascript:imgSubmit('image.php?gallery=053&imgnum=5');"><img src="/galleries/053/thumbs/053img011.jpg" class="thumb_img" border="0" /></a></td> 

我在FOR循环的初始化中猜测了它的某些内容，但是我在这里没有看到，但是对于前两个图像来说显然是错误的。这是脚本中的相关代码。

<?php

error_reporting(E_ALL);

require("config.php");
require("common.php");

$gallery    = $_GET['page'];
$gallerydir = DOC_ROOT . GALLERY_ROOT . '/' . $gallery;
$imglist    = getImageList($gallerydir);
$imgcnt     = count($imglist);

$currpage   = (isset($_GET['currpage'])) 
    ? (int) $_GET['currpage'] 
    : 1;

// get page elements 
$js          = getJavaScript($imglist);
$thumb_table = getThumbTableHTML($gallery, $imglist, $imgcnt, $currpage);
$image_cnt   = getImageRangeHTML($imgcnt, $currpage);
$page_nav    = getPageNavHTML($imgcnt, $currpage, $gallery);

// load template header and body 
$head = file_get_contents("./template/header.html");
$body = file_get_contents("./template/thumb_page.html");

// insert page elements 
$head = str_replace('<-- JAVASCRIPT -->', $js, $head);
$body = str_replace('<-- THUMBNAIL_TABLE -->', $thumb_table, $body);
$body = str_replace('<-- IMAGE_COUNT -->', $image_cnt, $body);
$body = str_replace('<-- PAGE_NAVIGATION -->', $page_nav, $body);

// output
echo $head;
echo $body;
//********************************************************************* 
// Begin thumbnail page related functions 
//*********************************************************************

function getImageRangeHTML($imgcnt, $currpage) {

    $max_per_page = TABLE_COLS * TABLE_ROWS;
    $pagecnt      = getThumbPageCount($imgcnt); 
    $first_image  = ($currpage - 1) * $max_per_page + 1;
    $last_image   = ($currpage == $pagecnt) 
        ? $imgcnt 
        : $currpage * $max_per_page;

    $str = "
        <font size=\"2\" face=\"Verdana, Geneva, sans-serif\"><i>
        $imgcnt images
        </i></font>
    ";

    return $str;
}
//********************************************************************* 

function getPageNavHTML($imgcnt, $currpage, $gallery) {

    $pagecnt  = getThumbPageCount($imgcnt); 
    $self     = $_SERVER['PHP_SELF'];

    // only proceed if there is more than 1 page of thumbs
    if ($pagecnt == 1) { return; }

    $str = "<ul>\n";

    for ($i = 1; $i <= $pagecnt; $i++) {

        if ($i == $currpage) {
            $str .= "<li class=\"active\">$i</li>";
        } else {
            $str .= "<li><a href=\"javascript:imgSubmit('$self?";
            $str .= "gallery=$gallery&currpage=$i');\">$i</a></li>";
        }
    }

    $str .= "</ul>\n";
    return $str;
}

//******************************************************************** 

function getThumbTableHTML($gallery, $imglist, $imgcnt, $currpage) {
    $max_per_page = TABLE_COLS * TABLE_ROWS;

    // set index of page's first image in image list array
    $first_image_index = ($currpage - 1) * $max_per_page;

    // set index of page's last image in image list array 
    $last_image_index = ($imgcnt < $currpage * $max_per_page)
        ? $last_image_index = $imgcnt
        : $currpage * $max_per_page;

    $str = '<table border="0" id="thumb_table">' . "\n";

    // loop control var
    $column_cnt  = 1;

    // loop through current page images
    for ($i = $first_image_index; $i < $last_image_index; $i++) {
        # build path to thumb
        $thumburl  = GALLERY_ROOT . "/$gallery/thumbs/" . $imglist[$i];

        // insert row tag if this is the first column
        if ($column_cnt == 1) { $str .= "<tr>\n"; }

        // insert thumbnail, and surrounding html
        $str .= "<td>";
        $str .= "<a href=\"javascript:imgSubmit('image.php?gallery=$gallery";
        $str .= "&imgnum=" . ($i + 1) . "');\">";
        $str .= "<img src=\"$thumburl\" class=\"thumb_img\" ";
        $str .= "border=\"0\" /></a>";
        $str .= "</td>\n";

        if ($column_cnt == TABLE_COLS) {
            $str .= "</tr>\n\n";
            $column_cnt = 1;
        } else {
            $column_cnt++;
        }
    }

    $str .= "</table>\n";
    return $str;
}

// ********************************************************************* 

function getThumbPageCount($imgcnt) {

    $page_cnt = (int) (($imgcnt - 1) / (TABLE_COLS * TABLE_ROWS)) + 1;
    return $page_cnt;
}

// ********************************************************************* 
?>

这是GetImageList（）函数的相关代码

    function getImageList($gallerydir) {
        if (isset($_POST['imglist'])) {
            $imglist = $_POST['imglist'];
        } else {
            $fh = opendir("$gallerydir/thumbs");

            // read directory, and loop through retreived filenames
            while ($file = readdir($fh)) {
                // if image, add filename to image list 
                if (!preg_match("\.(jpg|gif|png|jpeg|jpe)$", $file)) {
                    $imglist[] = $file; 
                }
            }
            closedir($fh);
        }

        if (is_array($imglist)) {
            ksort($imglist);
        } else {
            $imglist = false;
        }
        return $imglist;
    }

//*********************************************************************
// Javascript writes image list as http posted array

function getJavaScript($imglist) {
    $str = '
    <script language="JavaScript">
    function imgSubmit(s) {
        document.img.method = "post";
        document.img.action = s;
        document.img.submit();
    }

    function imgList() {
    ';
    $str .= "\tvar imglist = new Array('" . implode("', '", $imglist) . "');\n";
    $str .= '
        for (var i=0; i < imglist.length; i++) {
            document.write ("<input type=\"hidden\" name=\"imglist[]\" ");
            document.write ("value=\"" + imglist[i] + "\" />"); 
        }
    }
    </script>
    ';
    return $str;
}

//*********************************************************************

?>