[英]PHP pagination using glob to retrieve images
我正在嘗試使用glob()從文件夾中檢索圖像,我希望將其分頁,因此每頁僅顯示3張圖像。
通過在Internet上進行挖掘以及在此處進行搜索,我得到了下面的代碼。 問題在於它僅從目錄中提取三個圖像,當我單擊下一頁時,它會顯示相同的3個圖像。
使用glob為每個頁面獲取不同圖像的最佳方法是什么?
$imagesDir = 'uploadedImages/thumbs/*';
$itemsPerPage = 3;
$currentPage = isset($_GET['page']) ? $_GET['page'] : 1;
$totalItems = getTotalItems($imagesDir);
$totalPages = ceil($totalItems / $itemsPerPage);
getItemsFromPage($currentPage, $itemsPerPage, $imagesDir);
getPager($totalPages, $currentPage);
//counts the number of files in the dir
function getTotalItems($imagesDir) {
$numImages = count(glob($imagesDir));
return $numImages;
}
//gets the files from the dir
function getItemsFromPage($page, $numItems, $dir) {
$x = 0;
//get the first 3 items from the
foreach(glob($dir) as $image)
{
if($x < $numItems)
{
echo "<li><img src=\"$image\" alt=\"$image\" /></li>";
$x++;
}
else
{
break;
}
}
}
//creates the pages and the links
function getPager($totalPages, $currentPage) {
// if we're not on the first page, show the previous page and first page links
if($currentPage > 1)
{
$prevPage = $currentPage - 1;
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=1'><<</a> ";
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$prevPage'><</a> ";
}
$range = 1;
// show what page we're on and the page numbers surround this page
for($x = ($currentPage - $range); $x < ($currentPage + $range) +1; $x++)
{
if(($x > 0) && ($x <= $totalPages))
{
if($x == $currentPage)
{
echo " [<b>$x</b>] ";
}
else
{
echo " <a href='{$_SERVER['PHP_SELF']}?currentPage=$x'>$x</a> ";
}
}
}
// if we're not on the last page show the next page and last page links
if($currentPage != $totalPages)
{
$nextPage = $currentPage + 1;
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$nextPage'>></a> ";
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$totalPages'>>></a> ";
}
}
function getItemsFromPage($page, $numItems, $dir) {
$offset = ($page - 1) * $numItems;
$x = 0;
//get the first 3 items from the
foreach(glob($dir) as $image)
{
if($x < $offset)
{
$x++;
}
elseif($x < $numItems + $offset)
{
echo "<li><img src=\"$image\" alt=\"$image\" /></li>";
$x++;
}
else
{
break;
}
}
}
問題出在getItemsFromPage函數中。 它總是從$x = 0;
$ x應該有所不同,取決於頁碼
如果有人要檢索不帶文件擴展名的圖像文件名,請使用pathinfo
返回有關文件路徑的信息。
$dirname = "cards/";
$images = glob($dirname . "*.png");
foreach ($images as $image) {
$title = pathinfo($image);
echo $title['filename'];
}
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