10-07-2008, 04:07 AM
| THREAD STARTER
#1 (permalink)
|
| i love automation Join Date: Nov 2007 Location: xrvel.com
Posts: 1,620
|  PHP Page Generator
Hi,
Here is a simple class to generate pages (for paging) for website.
Class source PHP Code: <?php
class page_generator {
var $current_page_format;
var $go_next_format;
var $go_previous_format;
var $hyperlink_format;
var $page_url_format;
var $all_records;
var $current_page;
var $flag;
var $item_per_page;
var $max_displayed_pages;
var $page_parameter;
var $page_string_next;
var $page_string_previous;
var $temp;
function page_generator() {
$this->init();
}
function set_all_records($i) {
$this->all_records = $i;
}
function get_limit_clause() {
$this->read_current_page();
return array(
'from' => (($this->temp['current_page']-1)*$this->item_per_page),
'to' => $this->item_per_page
);
}
function get_page_string() {
$i = 1;
$this->read_current_page();
$s = '';
$pagenum = ceil($this->all_records/$this->item_per_page);
if ($this->temp['current_page'] > 1) {
$s .= sprintf($this->go_previous_format,sprintf($this->page_url_format,$this->page_parameter.'='.($this->temp['current_page']-1)));
}
$temp = range(1, $pagenum);
$temp = array_chunk($temp, $this->max_displayed_pages);
$temp_max = count($temp);
for ($i = 0;$i<$temp_max;$i++) {
if (in_array($this->temp['current_page'], $temp[$i])) {
$min_draw = $temp[$i][0];
$max_draw = $temp[$i][count($temp[$i])-1];
break;
}
}
for ($i=1;$i<=$pagenum;$i++) {
if ($min_draw <= $i && $i <= $max_draw) {
if ($i != $this->temp['current_page']) {
$s .= sprintf($this->hyperlink_format,sprintf($this->page_url_format,$this->page_parameter.'='.$i),$i);
} else {
$s .= sprintf($this->current_page_format,$i);
}
}
if ($i > $max_draw) {
????: NamePros.com http://www.namepros.com/code/521588-php-page-generator.html
break;
}
}
if ($this->temp['current_page']<$pagenum && $pagenum!=0) {
$s .= sprintf($this->go_next_format,sprintf($this->page_url_format,$this->page_parameter.'='.($this->temp['current_page']+1)));
}
return(trim($s));
}
function init() {
$this->all_records = 0;
$this->current_page = 0;
$this->current_page_format = ' <b>%s</b> ';
$this->go_next_format = ' <a href="%s">»</a> ';
$this->go_previous_format = ' <a href="%s">«</a> ';
$this->flag = array();
$this->flag['ALL_RECORDS'] = false;
$this->hyperlink_format = ' <a href="%s">%s</a> ';
$this->item_per_page = 5;
$this->max_displayed_pages = 5;
$this->page_parameter='page';
$this->page_string_next='Next';
$this->page_string_previous='Previous';
$this->page_url_format='';
$this->temp = array();
$this->temp['current_page'] = 1;
}
function my_intval(&$s) {
$s = intval($s);
}
function my_trim(&$s) {
$s = trim($s);
}
function read_current_page() {
if (isset($_GET[$this->page_parameter])) {
$page=intval($_GET[$this->page_parameter]);
} else {
$page=1;
}
if ($page < 1) {
$page = 1;
}
$this->temp['current_page'] = $page;
}
/*
* Get & set
*/
function current_page_format($s='') {
$this->my_trim($s);
if ($s=='') {
return(trim($this->current_page_format));
} else {
$this->current_page_format=$s;
}
}
function go_next_format($s='') {
$this->my_trim($s);
if ($s=='') {
return(trim($this->go_next_format));
} else {
$this->go_next_format=$s;
}
}
function go_previous_format($s='') {
$this->my_trim($s);
if ($s=='') {
return(trim($this->go_previous_format));
} else {
$this->go_previous_format=$s;
}
}
function hyperlink_format($s='') {
$this->my_trim($s);
if ($s=='') {
return(trim($this->hyperlink_format));
} else {
$this->hyperlink_format=$s;
}
}
function item_per_page($s='') {
$this->my_trim($s);
if ($s=='') {
return(intval($this->item_per_page));
} else {
$this->item_per_page=intval($s);
}
}
function max_displayed_pages($s='') {
$this->my_trim($s);
if ($s=='') {
return(intval($this->max_displayed_pages));
} else {
$this->max_displayed_pages=intval($s);
}
}
function page_parameter($s='') {
$this->my_trim($s);
if ($s=='') {
return(trim($this->page_parameter));
} else {
$this->page_parameter=$s;
}
}
function page_url_format($s='') {
$this->my_trim($s);
if ($s=='') {
return(trim($this->page_url_format));
} else {
$this->page_url_format=$s;
}
}
}
?> Usage :
For example : - Normal SQL query is
Code: SELECT * FROM example - You want each page to display 8 data.
- You want to display max 10 page links (to avoid too long page link)
- The name of your current file is "display_data.php"
You can use this : PHP Code: <?php
// Let's get the total number of data
$q = "SELECT COUNT(*) FROM example";
$q = mysql_query($q);
$r = mysql_fetch_row($q);
$total_data = $r[0];
// Now here is the page generator
$pg = new page_generator();
$pg->set_all_records($total_data);
$pg->item_per_page(8);
$pg->max_displayed_pages(10);
$pg->page_url_format("display_data.php?%s");//page location
$page_navigation = $pg->get_page_string();// here is the page link
$limit_clause = $pg->get_limit_clause();// limit clause
????: NamePros.com http://www.namepros.com/showthread.php?t=521588
unset($pg);
?> Next, just before your code to read data from database PHP Code: <?php
$q = "SELECT * FROM example LIMIT ".$limit_clause['from']." , ".$limit_clause['to'];
$q = mysql_query($q);
?> And you can display the page link anytime with this code  PHP Code: <?php echo $page_navigation; ?> I hope this code can help. |
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