friendlyUrl = $friendlyUrl;
$this->__resetCurrentPage();
}
/**
* set maximum number of items per page
*
* @param integer $value maximum number of items per page
*/
function setLimit($value)
{
$this->itemsPerPage = (int)($value);
}
/**
* get maximum number of items per page
*
* @return integer
*/
function getLimit()
{
return $this->itemsPerPage;
}
/**
* set the total number of items
*
* @param integer $value the total number of items
*/
function setTotal($value)
{
$this->totalItems = (int)($value);
}
/**
* get the total number of items
*
* @return integer total number of items
*/
function getTotal()
{
return $this->totalItems;
}
/**
* get total pages will be used to display all records
*
*/
function getTotalPages()
{
$output = floor(($this->totalItems / $this->itemsPerPage ));
if ($this->totalItems % $this->itemsPerPage)
{
$output++;
}
return $output;
}
/**
* Set the index of URL Query String
*
* @param string $value e.g. page
*/
function setPageIndex($value)
{
$this->pageIndex = $value;
$this->__resetCurrentPage();
}
function getPageIndex()
{
return $this->pageIndex;
}
/**
* initiate or reset the current page number
*
*/
function __resetCurrentPage()
{
$this->currentPage = ((isset($_GET[$this->pageIndex]) && (int)($_GET[$this->pageIndex]) > 0)?(int)($_GET[$this->pageIndex]):1);
}
/**
* set the base url used in the links, default is $PHP_SELF
*
* @param string $value the base url
*/
function setUrl($value="")
{
if (empty($value))
{
if ($this->friendlyUrl)
{
$this->url = "http://" . $_SERVER['HTTP_HOST'] . "/";
}else
{
$this->url = $_SERVER['PHP_SELF'];
}
}else
{
$this->url = $value;
}
}
/**
* get the base url variable
*
* @return string the base url
*/
function getUrl()
{
if (empty($this->url))
{
$this->setUrl();
}
return $this->url;
}
/**
* set base url for pagination links after exculed those keys
* identified on excluded query strings
*/
function __setBaseUrl()
{
if (empty($this->url))
{
$this->getUrl();
}
if ($this->friendlyUrl)
{
$this->baseUrl = $this->getUrl();
}else
{
$appendingQueryStrings = array();
$this->excludedQueryStrings[$this->pageIndex] =$this->pageIndex;
foreach($_GET as $k=>$v)
{
if ((array_search($k, $this->excludedQueryStrings) === false ))
{
$appendingQueryStrings[$k] = $k . "=" . $v;
}
}
if (sizeof($appendingQueryStrings))
{
$this->baseUrl = $this->__appendQueryString($this->url, implode("&", $appendingQueryStrings));
}else
{
$this->baseUrl = $this->getUrl();
}
}
}
/**
* get base url for pagination links aftr excluded those key
* identified on excluded query strings
*
*/
function __getBaseUrl()
{
if (empty($this->baseUrl))
{
$this->__setBaseUrl();
}
return $this->baseUrl;
}
/**
* get the first item number
*
* @return interger the first item number displayed within current page
*/
function getFirstItem()
{
$output = 0;
$temStartItemNumber = (($this->currentPage - 1) * $this->itemsPerPage + 1);
if ($this->totalItems && $temStartItemNumber <= $this->totalItems )
{
$output = $temStartItemNumber;
}
return $output;
}
/**
* get the last item number displayed within current page
*
* @return interger the last item number
*/
function getLastItem()
{
$output = 0;
$temEndItemNumber = (($this->currentPage) * $this->itemsPerPage);
if ($this->totalItems)
{
if ($temEndItemNumber <= $this->totalItems)
{
$output = $temEndItemNumber;
}else
{
$output = $this->totalItems;
}
}
return $output;
}
/**
* set page groupings limit
* used for previous 1 2 3 4 5 next
*
* @param unknown_type $value
*/
function setGroupLimit($value)
{
$this->groupLimit = (int)($value);
}
/**
* get page grouping limit
*
* @return integer the page grouping limit
*/
function getGroupLimit()
{
return $this->groupLimit;
}
/**
* get the page offset number
* used for Query . e.g SELECT SQL_CALC_FOUND_ROWS *
* FROM mytable LIMIT getPageOffset(), getItemsPerPage()
*
* @return iner
*/
function getPageOffset()
{
return (($this->currentPage - 1) * $this->itemsPerPage);
}
/**
* get the last url if any
* @return string the last url
*/
function getLastUrl()
{
$url = "";
$totalPages = $this->getTotalPages();
if ($this->currentPage < $totalPages)
{
$url = $this->__getBaseUrl();
if ($this->friendlyUrl)
{
$url .= $this->pageIndex . $totalPages . "/";
}else
{
$url = $this->__appendQueryString($url, $this->pageIndex . "=" . $totalPages);
}
$url = sprintf('',
$url,
$this->lastText);
}
return $url;
}
/**
* get the first url if any
* @return string the first url
*/
function getFirstUrl()
{
$url = "";
if ($this->currentPage > 1)
{
$url = $this->__getBaseUrl();
if ($this->friendlyUrl)
{
$url .= $this->pageIndex . "1/";
}else
{
$url = $this->__appendQueryString($url, $this->pageIndex . "=1");
}
$url = sprintf('',
$url,
$this->firstText);
}
return $url;
}
/**
* get the previous page url if anywhere
*
* @param array $excludedQueryStrings excluded the value from $_GET
* @return string the previous page url
*/
function getPreviousUrl()
{
$url = "";
if ($this->currentPage > 1 && $this->totalItems > 0 )
{
$url = $this->__getBaseUrl();
if ($this->friendlyUrl)
{
$url .= $this->pageIndex . ($this->currentPage - 1) . "/";
}else
{
$url = $this->__appendQueryString($url, $this->pageIndex . "=" . ($this->currentPage -1));
}
$url = sprintf('',
$url,
$this->previousText);
}
return $url;
}
/**
* get the next page url if anywhere
*
* @param array $excludedQueryStrings excluded the value from $_GET
* @return string the next page url
*/
function getNextUrl()
{
$url = "";
if ($this->totalItems > ($this->currentPage * $this->itemsPerPage))
{
$url = $this->__getBaseUrl();
if ($this->friendlyUrl)
{
$url .= $this->pageIndex . ($this->currentPage + 1) . "/";
}else
{
$url = $this->__appendQueryString($url, $this->pageIndex . "=" . ($this->currentPage + 1));
}
$url = sprintf('',
$url,
$this->nextText);
}
return $url;
}
/**
* get the group page links e.g. 1,2,3,4,5
* return format
*
*
*
*/
function getGroupUrls()
{
$output = "";
if ($this->totalItems > 0)
{
$displayedPages = 0;
$url = $this->__getBaseUrl();
$totalPages = $this->getTotalPages();
// find halfway point
$groupLimitHalf = floor($this->groupLimit / 2);
// determine what item/page we start with
$itemStart = $this->currentPage - $groupLimitHalf;
$itemStart = ($itemStart > 0 && $itemStart <= $totalPages)?$itemStart:1;
$itemEnd = $itemStart;
while ($itemEnd < ($itemStart + $this->groupLimit - 1) && $itemEnd < $totalPages)
{
$itemEnd++;
}
if ($totalPages > ($itemEnd - $itemStart))
{
for ($i = $itemStart; $i > 1 && ($itemEnd - $itemStart + 1) < $this->groupLimit; $i--)
{
$itemStart--;
}
}
for ($item = $itemStart; $item <= $itemEnd; $item++)
{
if ($item != $this->currentPage)
{//it is not the active link
if ($this->friendlyUrl)
{
$temUrl = $url . $this->pageIndex . $item . "/";
}else
{
$temUrl = $this->__appendQueryString($url, $this->pageIndex . "=" . $item);
}
$output .= sprintf(' ', $temUrl, $item);
}else
{//active link
$output .= sprintf(' ', $item);
}
}
}
return $output;
}
/**
* set the text of previous page link
*
* @param string $value
*/
function setPreviousText($value)
{
$this->previousText = $value;
}
/**
* set the text of first page link
*
* @param string $value
*/
function setFirstText($value)
{
$this->firstText = $value;
}
/**
* set the text of next page link
*
* @param string $value
*/
function setNextText($value)
{
$this->nextText = $value;
}
/**
* set the text of last page link
*
* @param string $value
*/
function setLastText($value)
{
$this->lastText = $value;
}
/**
* set the excluded query string from $_GET;
*
* @param array the lists of the query string keys
*/
function setExcludedQueryString($values = array())
{
$this->excludedQueryStrings = $values;
}
function getExcludedQueryString()
{
return $this->excludedQueryStrings;
}
/**
* add extra query stiring to a url
* @param string $baseUrl
* @param string $extra the query string added to the base url
*/
function __appendQueryString($baseUrl, $extra)
{
$output = trim($baseUrl);
if (strpos($baseUrl, "?") !== false)
{
$output .= "&" . $extra;
}else
{
$output .= "?" . $extra;
}
return $output;
}
/**
* return the html
*
* @param integer $type
*/
function getPaginationHTML($type=1, $cssClass="pagination")
{
$output = '';
$output .= "";
return $output;
}
}
?>