PHP paging class and paging function, multiple paging styles to choose from

/**
* Page name: page_class.php
*/
class Page {
private $each_disNums; //Number of entries displayed per page
private $nums; //Total number of entries
private $current_page; //The currently selected page
private $sub_pages; //Number of pages displayed each time
private $pageNums; //Total number of pages
private $page_array = array (); //Array used to construct paging
private $ subPage_link; //Links for each page
/**
*
* __construct is the constructor of SubPages, used to run automatically when creating a class.
* @$each_disNums The number of entries displayed on each page
* @nums The total number of entries
* @current_num The currently selected page
* @sub_pages The number of pages displayed each time
* @subPage_link The link of each paging
* @subPage_type Displays the type of paging
*
* When @subPage_type=1, it is normal paging mode
* example: 4523 records in total, each The page displays 10 items, the current page 1/453 [Home] [Previous page] [Next page] [Last page]
* When @subPage_type=2, it is the classic paging style
* example: The current page 1/453 [ Home page] [Previous page] 1 2 3 4 5 6 7 8 9 10 [Next page] [Last page]
*/
function Page($each_disNums, $nums, $current_page, $sub_pages, $subPage_link) {
$this->each_disNums = intval($each_disNums );
$this->nums = intval($nums);
if (!$current_page) {
$this->current_page = 1;
} else {
$this->current_page = intval($current_page );
}
$this->sub_pages = intval($sub_pages);
$this->pageNums = ceil($nums / $each_disNums);
$this->subPage_link = $subPage_link;
}
/ **
* Take care of low version
*/
function __construct($each_disNums, $nums, $current_page, $sub_pages, $subPage_linke) {
$this->Page($each_disNums, $nums, $current_page, $sub_pages, $subPage_link) ;
}
/*
__destruct destructor, which is called when the class is no longer in use. This function is used to release resources.
*/
function __destruct() {
unset ($each_disNums);
unset ($nums);
unset ($current_page);
unset ($sub_pages);
unset ($pageNums);
unset ($page_array) ;
unset ($subPage_link);
}
/*
Function used to initialize the paging array.
*/
function initArray() {
for ($i = 0; $i < $this->sub_pages; $i++) {
$this->page_array[$i] = $i;
}
return $this->page_array;
}
/*
construct_num_Page该函数使用来构造显示的条目
即使：[1][2][3][4][5][6][7][8][9][10]
*/
function construct_num_Page() {
if ($this->pageNums < $this->sub_pages) {
$current_array = array ();
for ($i = 0; $i < $this->pageNums; $i++) {
$current_array[$i] = $i +1;
}
} else {
$current_array = $this->initArray();
if ($this->current_page <= 3) {
for ($i = 0; $i < count($current_array); $i++) {
$current_array[$i] = $i +1;
}
}
elseif ($this->current_page <= $this->pageNums && $this->current_page > $this->pageNums - $this->sub_pages + 1) {
for ($i = 0; $i < count($current_array); $i++) {
$current_array[$i] = ($this->pageNums) - ($this->sub_pages) + 1 + $i;
}
} else {
for ($i = 0; $i < count($current_array); $i++) {
$current_array[$i] = $this->current_page - 2 + $i;
}
}
}
return $current_array;
}
/*
构造普通模式的分页
共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
*/
function subPageCss1() {
$subPageCss1Str = "";
$subPageCss1Str .= "共" . $this->nums . "条记录，";
$subPageCss1Str .= "每页显示" . $this->each_disNums . "条，";
$subPageCss1Str .= "当前第" . $this->current_page . "/" . $this->pageNums . "页 ";
if ($this->current_page > 1) {
$firstPageUrl = $this->subPage_link . "1";
$prewPageUrl = $this->subPage_link . ($this->current_page - 1);
$subPageCss1Str .= "[首页] ";
$subPageCss1Str .= "[上一页] ";
} else {
$subPageCss1Str .= "[首页] ";
$subPageCss1Str .= "[上一页] ";
}
if ($this->current_page < $this->pageNums) {
$lastPageUrl = $this->subPage_link . $this->pageNums;
$nextPageUrl = $this->subPage_link . ($this->current_page + 1);
$subPageCss1Str .= " [下一页] ";
$subPageCss1Str .= "[尾页] ";
} else {
$subPageCss1Str .= "[下一页] ";
$subPageCss1Str .= "[尾页] ";
}
return $subPageCss1Str;
}
/*
构造经典模式的分页
当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
*/
function subPageCss2() {
$subPageCss2Str = "";
$subPageCss2Str .= "当前第" . $this->current_page . "/" . $this->pageNums . "页 ";
if ($this->current_page > 1) {
$firstPageUrl = $this->subPage_link . "1";
$prewPageUrl = $this->subPage_link . ($this->current_page - 1);
$subPageCss2Str .= "[首页] ";
$subPageCss2Str .= "[上一页] ";
} else {
$subPageCss2Str .= "[首页] ";
$subPageCss2Str .= "[上一页] ";
}
$a = $this->construct_num_Page();
for ($i = 0; $i < count($a); $i++) {
$s = $a[$i];
if ($s == $this->current_page) {
$subPageCss2Str .= "[" . $s . "]";
} else {
$url = $this->subPage_link . $s;
$subPageCss2Str .= "[" . $s . "]";
}
}
if ($this->current_page < $this->pageNums) {
$lastPageUrl = $this->subPage_link . $this->pageNums;
$nextPageUrl = $this->subPage_link . ($this->current_page + 1);
$subPageCss2Str .= " [下一页] ";
$subPageCss2Str .= "[尾页] ";
} else {
$subPageCss2Str .= "[下一页] ";
$subPageCss2Str .= "[尾页] ";
}
return $subPageCss2Str;
}
}
//Test two different effects
$t = new Page(10, 100, $_GET['p'], 5, 'page_class. php?p=');
echo $t->subPageCss2(); //Call the classic paging function
echo "";
echo $t->subPageCss1 ();//Call the normal paging function