PHP paging class example PHP and mysql simple paging class code-PHP Tutorial-php.cn

PHP paging class example PHP and mysql simple paging class code

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Release： 2016-07-25 08:51:30

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class PageModel {
/**
* Get the paging array
* @param unknown $page The current number of pages
* @param unknown $goodsCount The total number of products
* @param unknown $pageLength The number of pages displayed on each page
*/
public static function getPageArr($page, $goodsCount, $pageCountLength, $pageLength) {
//Total number of pages
$allPageCount = ceil($goodsCount / $pageLength);
//If the page is always shorter than the length, set the page length to the total number of pages
if ($allPageCount <= $pageCountLength) {
$allPageCount = ceil($goodsCount / $pageLength);
}
//The total number of pages is displayed in one page
if ($allPageCount <= $pageCountLength) {
for ($i = 0; $i < $allPageCount; $i ++) {
$arr[] = array( 'page' => $i + 1);
}
return $arr;
}
//The length before and after
$halfLength = floor($pageCountLength / 2);
//Because it is too small, put it in the original position , left
if ($page <= $halfLength) {
$arr = array();
for ($i = 0; $i < $pageCountLength; $i ++) {
$arr[] = array ('page' => $i + 1);
}
return $arr;
}
//If it is too big, only the edge will be fetched. If it exceeds, only the edge will be fetched
if ($page > $allPageCount - floor ($pageCountLength / 2)) {
for ($i = -$pageCountLength; $i < 0; $i ++) {
$arr[] = array('page' => $allPageCount + $i + 1);
}
return $arr;
}
//The middle number, take out the middle number
for ($i = -$halfLength; $i < $pageCountLength - $halfLength; $i ++) {
$arr[] = array('page' => $page + $i);
}
return $arr;
}
}