A simple and useful PHP paging class _php

Copy CodeThe code is as follows:
Class Page {
Number of pages displayed per page in the page bar
Public $rollPage = 6;
The parameters to take when the page jumps
Public $parameter;
Default list shows the number of rows per page
Public $listRows = 20;
Number of start lines
Public $firstRow;
Number of page total pages
protected $totalPages;
Total number of rows
protected $totalRows;
Current page
protected $nowPage;
Total number of pages in the page bar
protected $coolPages;
Pagination Display Customization
protected $config = Array (
' Redirect ' =>false,
' Header ' = ' record ',
' Prev ' = ' prev ',
' Next ' = ' next page ',
' First ' = ' 1 ',
' Last ' and ' The final page ',
' Theme ' = '%uppage%%first%%prepage%%linkpage%%nextpage%%downpage% Total%totalpage% page ');
Default paging variable name
protected $varPage;

/**
+----------------------------------------------------------
* Schema function
+----------------------------------------------------------
* @access Public
+----------------------------------------------------------
* Total number of records $totalRows @param array
* @param array $listRows shows the number of records per page
* @param the parameters of the array $parameter paging jump
+----------------------------------------------------------
*/
Public function __construct ($totalRows, $listRows = ', $parameter = ') {
$this->totalrows = $totalRows;
$this->parameter = $parameter;
$this->varpage = C (' Var_page ')? C (' Var_page '): ' P ';
if (!empty ($listRows)) {
$this->listrows = intval ($listRows);
}
$this->totalpages = ceil ($this->totalrows/$this->listrows); Total pages
$this->coolpages = ceil ($this->totalpages/$this->rollpage);
$_get Verification
$this->nowpage = intval ($_get[$this->varpage]);
$this->nowpage = $this->nowpage > 0? $this->nowpage:1;

if (!empty ($this->totalpages) && $this->nowpage> $this->totalpages) {
$this->nowpage = $this->totalpages;
}
$this->firstrow = $this->listrows* ($this->nowpage-1);
}

Public Function Setconfig ($name, $value) {
if (Isset ($this->config[$name])) {
$this->config[$name] = $value;
}
}

/**
+----------------------------------------------------------
* Pagination Display output
+----------------------------------------------------------
* @access Public
+----------------------------------------------------------
*/
Public function Show () {

if (0 = = $this->totalrows) return ';

Processing parameters
$p = $this->varpage;
$url = $_server[' Request_uri '). (Strpos ($_server[' Request_uri '), '? ')? ': "?". $this->parameter;
$parse = Parse_url ($url);
if (Isset ($parse [' query '])) {
Parse_str ($parse [' query '], $params);
Unset ($params [$p]);
$url = $parse [' Path ']. Http_build_query ($params);
}

/* Paging logic */

When the total is less than the number of pages displayed
if ($this->totalpages <= $this->rollpage) {
$start = 1;
$end = $this->totalpages;
}
else{
//
if ($this->nowpage <= $this->rollpage-1) {
$start = 1;
$end = $this->rollpage;

$islast = true;
}
else if ($this->nowpage > $this->totalpages-$this->rollpage + 1) {
$start = $this->totalpages-($this->rollpage-1);
$end = $this->totalpages;

$isfirst = true;
}
else{
Number of floats
$size = Floor ($this-&GT;ROLLPAGE/2);

$start = $this->nowpage-$size;
$end = $this->nowpage + $size;

$isfirst = true;
$islast = true;
}
}

Page UP and down strings
$upRow = $this->nowpage-1;
$downRow = $this->nowpage + 1;


/* Assemble HTML */

< 1 ... ... last >
if ($isfirst) {
$theFirst = "". $this->config[' first ']. "";
}
if ($islast) {
$theEnd = "TotalPages ' >". $this->config[' last ']. ";
}

if ($upRow > 0) {
$upPage = "". $this->config[' prev ']. ";
}

if ($downRow <= $this->totalpages) {
$downPage = "". $this->config[' next '. ";
}

if ($start ==3) {
$linkPage. = "2";
}
if ($start >=4) {
$linkPage. = "2...";
}
1 2 3) 4 5
for ($i = $start; $i <= $end; $i + +) {
if ($i! = $this->nowpage) {
$linkPage. = "". $i. " ";
}else{
$linkPage. = "". $i."";
}
if ($i = = $end) {
if ($i < $this->totalrows) {
$linkPage. = "...";
}
}
}

$PAGESTR = Str_replace (
Array ('%header% ', '%nowpage% ', '%totalrow% ', '%totalpage% ', '%uppage% ', '%first% ', '%prepage% ', '%linkpage% ', '% Nextpage% ', '%downpage% ', '%end% '),
Array ($this->config[' header '), $this->nowpage, $this->totalrows, $this->totalpages, $upPage, $theFirst, $prePage, $linkPage, $nextPage, $downPage, $theEnd), $this->config[' theme ');

Display mode normal false with jump ture
if (!empty ($this->config[' redirect ')) {
$html = $PAGESTR;

}else{
Passing parameters
if ($this->totalpages > 1) {
$redirect = "to the first";
}else{
$redirect = $redirect. '';
}
}
Generating an HTML string
$html = $pageStr. $redirect;
}
return $html;
}

}

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