<?php
/*======================================================================*\
|| ####################################################################
|| # Pefect Paging Class - by Ata Sasmaz
|| # Contact: atasasmaz _/at/_ gmail.com
|| # Feel free to improve and edit
|| # - - - - - - - - - - - - - - - - - -
|| # Needs PHP5 (maybe works on PHP4 but
|| # I'm using PHP5 and i couldn't try.)
|| ####################################################################
\*======================================================================*/
//---------------INFOS-----------------
//Give $url var to assign function like
//doc.php?
//doc.php?docid=5&
/*
Example usage of paging:
require_once ( 'paging.class.php' );
$paging = new paging;
-- --
//url - total records [ - records_per_page ( as class var ) ]
$paging->assign ( 'topic.php?id=5&' , '47' );
-- OR --
//url - total records - records_per_page
$paging->assign ( 'docs.php?' , '47' , 20 );
-- OR --
//onclick function - total records - records_per_page
//[:page:] will be replaced with that link's page number
//href='#' will be used, so i suggest use return false
//end of the js function
$paging->assign ( 'onclick="ajax_show_page(\'[:page:]\'); return false;"' , '47' , 20 );
-- --
echo $paging->fetch;
Example usage of sql limit generator:
//You don't need these two lines
//if you do it before
require_once ( 'paging.class.php' );
$paging = new paging;
//function variable is $records_per_page
//Current page will be got automaticly.
$sql_limit = $paging->sql_limit ( 20 );
-- OR --
//If you set the records_per_page before
//or you are using the default class value
//no need to set variable.
$sql_limit = $paging->sql_limit ();
//And use it like that
mysql_query("SELECT * FROM table LIMIT $sql_limit");
*///-------------------------------------
class paging
{
//--------------------------------------------------
//This will be used at links like example.php?page=5
//Default: page # Type: string
//--------------------------------------------------
var $page_url_var = 'page';
//---------------------------------------
//How many links will be showed?
//Like 4-5-6-7-8-9-10-11-12
//Except first, last, back, forward links
//Default: 8 # Type: integer
//---------------------------------------
var $align_links_count = '8';
//------------------------------------------------------------------
//If you give this at assign function this value will be overwritten
//This value will have been used if you use assign function like
//$paging->assign ( 'example.php?' , 100 );
//Default: 15 # Type: integer
//------------------------------------------------------------------
var $records_per_page = 15;
//-----------------------------------------
//Do we want to use back and forward links?
//Back: « ---- Forward: »
//-----------------------------------------
var $use_back_forward = true;
var $back_link_icon = '«'; // « = «
var $fwd_link_icon = '»'; // » = »
#######
//--------------------------------------------
//Do we want to use first and last page links?
//First: 1... ---- Last: ...[Last_Page]
//--------------------------------------------
var $use_first_last = true;
//-------------------------------------------
//The class for this page's element (span tag)
//Make false if you don't want to use this
//Default: paging_this_page # Type: string
//-------------------------------------------
var $active_page_class = 'paging_this_page';
//-----------------------------------------------------
//For other pager links' class
//Take links into a div like with class "pager_links"
//Use at css file something like this
//.pager_links a { font-size: 10px; }
//No need fo give all links "class" attribute
//-----------------------------------------------------
function assign ( $url , $total_records , $records_per_page = false )
{
$this->total_records = $total_records;
//If $records_per_page given
//at function, use it
if ( $records_per_page != false )
$this->records_per_page = $records_per_page;
//Which page at we are?
$this->current_page = ( $_GET[$this->page_url_var] ) ? $_GET[$this->page_url_var] : '1';
$this->check_page_is_int ( $this->current_page );
//-------------------------------------
//Check if the url is given correctly
//if we're not using js onclick
//-------------------------------------
if ( ! eregi ( '^onclick=' , $url ) )
{
if ( ! ereg ( '\?' , $url ) )
$url .= '?';
elseif ( ereg ( '\?.+' , $url ) && ! ereg ( '&$' , $url ) )
$url .= '&';
$url .= $this->page_url_var . '=';
}
else
$this->onclick = true;
$this->url = $url;
if ( $this->active_page_class )
$this->active_page_class = ' class="'.$this->active_page_class.'" ';
//Let's clear the html function
//to not generate same codes again
unset ( $this->html );
}
function fetch ()
{
//If already generated?
if ( $this->html )
return $this->html;
//Let's run our functions to generate
$this->generate_pages();
$this->generate_html();
return $this->html;
}
function generate_pages ()
{
//-------------------------
//Find the true page count
//-------------------------
$page_count = $this->total_records / $this->records_per_page;
if ( $page_count != intval ( $page_count ) )
$page_count = intval ( $page_count ) + 1;
#######
//How many links do we want to show?
//Let's check if the page count less
//than the align_links_count
$max_link = $page_count > $this->align_links_count ? $this->align_links_count : $page_count;
//Make start and end page equal first
$start_page = $this->current_page;
$end_page = $this->current_page;
//Now start start_page decreasing
//and end page increasing
while ( $max_link > '0' )
{
$looped = false;
if ( $end_page < $page_count )
{
$end_page++;
$max_link--;
$looped = true;
}
if ( $start_page > '1' && $max_link != '0' )
{
$start_page--;
$max_link--;
$looped = true;
}
if ( $looped == false )
break;
}
//---------------------------------
//Let's make the page number links
//From start page to end page
//---------------------------------
$i = $start_page;
while ( $i <= $end_page )
{
if ( $i != $this->current_page )
{
$pagearray[] = $this->generate_link ( $i , $i ) ;
}
else
$pagearray[] = '<span'.$this->active_page_class.'>'.$i.'</span>';
$i++;
}
#######
//Do we want to use first and last page links?
if ( $this->use_first_last == true )
{
//Just make the first page url if we need
if ( $start_page > 1 )
{
$threedot_first = ( $start_page != '2' ) ? '...' : ' ';
$this->page_first = $this->generate_link ( '1' , '1' ) . $threedot_first ;
}
//Just make the last page url if we need
if ( $end_page < $page_count )
{
$threedot_last = ( $end_page != $page_count - 1 ) ? '...' : ' ';
$this->page_last = $threedot_last . $this->generate_link ( $page_count , $page_count ) ;
}
}
//Do we want to use back and forward links?
if ( $this->use_back_forward == true )
{
//Let's make "back" « link
//if page is not the first
if ( $this->current_page != '1' )
$this->page_back = $this->generate_link ( $this->back_link_icon , $this->current_page - 1 ) . ' ' ;
//Let's make "forward" » link
//if page is not the last
if ( $this->current_page != $page_count )
$this->page_fwd = ' ' . $this->generate_link ( $this->fwd_link_icon , $this->current_page + 1 ) ;
}
//Let's make them global class variable
$this->page_count = $page_count;
$this->pagearray = $pagearray;
}
//--------------------------------
//Convert all php strings, arrays
//as html output
//--------------------------------
function generate_html ()
{
$html = implode ( ' ' , $this->pagearray );
$html = $this->page_back . $this->page_first . $html . $this->page_last . $this->page_fwd;
$this->html = $html;
}
//----------------------------
//Link (a tag) html generateor
//----------------------------
function generate_link ( $inner, $page_number )
{
//If we are using the js onclick
if ( $this->onclick == true )
{
$onclick = ' ' . str_replace ( '[:page:]' , $page_number , $this->url );
$url = '#';
}
//If not
else
$url = $this->url . $page_number;
//that's the line, i did all codes for :)
$link = '<a href="'.$url.'"'.$onclick.'>'.$inner.'</a>';
return $link;
}
//-------------------------------
//The protection for url variable
//-------------------------------
function check_page_is_int ( $current_page )
{
if ( ! ereg ( '^[0-9]+$' , $current_page ) )
die ( 'Page number is not integer.' );
}
//-----------------------------
//Let's make the SQL LIMIT code
//-----------------------------
function sql_limit ( $records_per_page = false )
{
$current_page = ( $this->current_page ) ? $this->current_page : $_GET[$this->page_url_var];
$this->check_page_is_int ( $current_page );
$records_per_page = ( $records_per_page == false ) ? $this->records_per_page : $records_per_page;
$limit_start = ( $current_page - 1 ) * $records_per_page;
$sql = $limit_start . ',' . $records_per_page;
return $sql;
}
}
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