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<?php
// =====================================================
// FILE: Paging.php
//
// =====================================================
// Description: This class handles the paging from a query to be print
// to the browser. You can customize it to your needs.
//
// This is distribute as is. Free of use and free to do anything you want.
//
// PLEASE REPORT ANY BUG TO ME BY EMAIL :)
//
// =========================
// Programmer: Pierre-Yves Lemaire
// pylem_2000@yahoo.ca
// =========================
// Date: 2001-03-25
// Version: 2.0
//
// Modif:
// Version 1.1 (2001-04-09) Remove 3 lines in getNumberOfPage() that were forgot after debugging
// Version 1.1 (2001-04-09) Modification to the exemple
// Version 1.1 (2001-04-10) Added more argv to the previous and next link. ( by: peliter@mail.peliter.com )
// Version 2.0 (2001-11-22) Complete re-write of the script
// Summary: The class will be make it easier to play with results...
// * The class now only returns 2 arrays. All HTML, except href, tag were remove.
// * Function printPaging() broken in two: getPagingArray() and getPagingRowArray()
// * Function openTable() and closeTable() removed.
// =====================================================
class Paging {
var $int_num_result; // Number of result to show per page (decided by user)
var $int_nbr_row; // Total number of items (SQL count from db)
var $int_cur_position;// Current position in recordset
var $str_ext_argv; // Extra argv of query string
// ------------------------------------------------------------------------ Constructor
//
function Paging( $int_nbr_row, $int_cur_position, $int_num_result, $str_ext_argv = "" ){
$this->int_nbr_row = $int_nbr_row;
$this->int_num_result = $int_num_result;
$this->int_cur_position = $int_cur_position;
$this->str_ext_argv = urldecode( $str_ext_argv );
} // End constructor
// ------------------------------------------------------------------- getNumberOfPage()
// This function returns the total number of page to display.
function getNumberOfPage(){
$int_nbr_page = $this->int_nbr_row / $this->int_num_result;
return $int_nbr_page;
} // end function
// -------------------------------------------------------------------- getCurrentPage()
// This function returns the current page number.
function getCurrentPage(){
$int_cur_page = ( $this->int_cur_position * $this->getNumberOfPage() ) / $this->int_nbr_row;
return number_format( $int_cur_page, 0 );
} // end function
// ----------------------------------------------------------------------- getPagingArray()
// This function print the paging to the screen.
// This function returns an array:
// $array_paging['lower'] lower limit of where we are in result set
// $array_paging['upper'] upper limit of where we are in result set
// $array_paging['total'] total number of result
// $array_paging['previous_link'] href tag for previous link
// $array_paging['next_link'] href tag for next link
function getPagingArray(){
global $PHP_SELF;
$array_paging['lower'] = ( $this->int_cur_position + 1 );
if( $this->int_cur_position + $this->int_num_result >= $this->int_nbr_row ){
$array_paging['upper'] = $this->int_nbr_row;
}else{
$array_paging['upper'] = ( $this->int_cur_position + $this->int_num_result );
}
$array_paging['total'] = $this->int_nbr_row;
if ( $this->int_cur_position != 0 ){
$array_paging['first_link'] = "<a href=\"$PHP_SELF?int_cur_position=0".$this->str_ext_argv."\">";
$array_paging['previous_link'] = "<a href=\"$PHP_SELF?int_cur_position=". ( $this->int_cur_position - $this->int_num_result ).$this->str_ext_argv ."\">";
}
if( ( $this->int_nbr_row - $this->int_cur_position ) > $this->int_num_result ){
$int_new_position = $this->int_cur_position + $this->int_num_result;
$array_paging['last_link'] = "<a href=\"$PHP_SELF?int_cur_position=".$this->int_nbr_row.$this->str_ext_argv."\">";
$array_paging['next_link'] = "<a href=\"$PHP_SELF?int_cur_position=$int_new_position". $this->str_ext_argv ."\">";
}
return $array_paging;
} // end function
// ----------------------------------------------------------------------- getPagingRowArray()
// This function returns an array of string (href link with the page number)
function getPagingRowArray(){
global $PHP_SELF;
for( $i=0; $i<$this->getNumberOfPage(); $i++ ){
// if current page, do not make a link
if( $i == $this->getCurrentPage() ){
$array_all_page[$i] = "<b>". ($i+1) ."</b> ";
}else{
$int_new_position = ( $i * $this->int_num_result );
$array_all_page[$i] = "<a href=\"". $PHP_SELF ."?int_cur_position=$int_new_position$this->str_ext_argv\">". ($i+1) ."</a> ";
}
}
return $array_all_page;
} // end function
}; // End Class
?>