PHP Page Header There is a large section of comment description, how to find out where to write, to explain

PHP Page Header There is a large paragraph of comment description, how to find out where to write, to explain?

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* @copyright: Copyright 2006 FEIFENGXLQ * @license: Version 2.0 * @create: 2006-5-31 * @modify: 2006-6-1 * @modify: FEIFENGXLQ 2006-11-4 * Description: Ultra-strong paging class, four paging modes, default to similar baidu,google-like paging style. * 2.0 Add Feature: Support custom style, custom style, support PHP4 and PHP5, * to see Detail,please visit http://www.phpobject.net/blog/read.php? * Example: * Mode four paging mode: require_once (' ... /libs/classes/page.class.php '); $page =new page (Array (' Total ' =>1000, ' perpage ' =>20)); Echo ' Mode:1
'. $page->show (); Echo '
--------------------------------------------
Mode:2
'. $page->show (2); Echo '
--------------------------------------------
Mode:3
'. $page->show (3); Echo '
--------------------------------------------
Mode:4
'. $page->show (4); Open Ajax: $ajaxpage =new page (' Total ' =>1000, ' perpage ' =>20, ' ajax ' = ' ajax_page ', ' page_name ' = ' test ' )); Echo ' Mode:1
'. $ajaxpage->show (); Inherit custom paging display mode: Demo:http://www.phpobject.net/blog */class Page {/** * config, public */var $page _name= "Pb_page";//page label To control the URL page. such as xxx.php? pb_page=2 pb_page var $next _page= ' > ';//Next page var $pre _page= ' < ';//previous page var $first _page= ' first ';//home Var $last _page= ' last ';//end Var $pre _bar= ' << ';//previous page strip Var $next _bar= ' >> ';//Next page strip var $format _left= ' ['; var $format _right= ' ]'; var $is whether _ajax=false;//supports AJAX paging mode/** * Private * */var $pagebarnum =10;//control the number of record bars. var $totalpage =0;//Total pages var $ajax _action_name= ";//ajax action name var $nowindex =1;//current page var $url =" ";//url address header var $offset = 0; /** * Constructor Constructor * * @param array $array [' total '], $array [' Perpage '], $array [' Nowindex '], $array [' url '], $array [' Ajax '] ... */function page ($array) {if (Is_array ($array)) {if (!array_key_exists (' Total ', $array)) $this->error (__ function__, ' need a param of total '); $total =intval ($array [' total ']); $perpage = (array_key_exists (' Perpage ', $array))? intval ($array [' Perpage ']): 10; $nowindex = (Array_keY_exists (' Nowindex ', $array))? intval ($array [' Nowindex ']): '; $url = (array_key_exists (' url ', $array))? $array [' url ']: '; }else{$total = $array; $perpage =10; $nowindex = "; $url =";} if ((!is_int ($total)) | | ($total <0)) $this->error (__function__, $total. ' is not a positive integer! '); if ((!is_int ($perpage)) | | ($perpage <=0)) $this->error (__function__, $perpage. ' is not a positive integer! '); if (!empty ($array [' page_name '])) $this->set (' page_name ', $array [' page_name ']);//set PAGENAME $this->_set_ Nowindex ($nowindex);//Set the current page $this->_set_url ($url);//Set the link address $this->totalpage=ceil ($total/$perpage); $this->offset= ($this->nowindex-1) * $perpage; if (!empty ($array [' Ajax])) $this->open_ajax ($array [' Ajax ']),//Open Ajax mode}/** * Set the value of the variable name specified in the class, if the change amount does not belong to this class, will throw a exception * * @param string $var * @param string $value */function set ($var, $value) {//var_dump (Get_object_vars ( $this)); if (In_array ($var, Get_object_vars ($this))) $this, $var = $value; else {//$this->error (__function__, $var."Does not belong to pb_page!"); }}/** * Open inverted Ajax mode * * @param string $action default Ajax-triggered action. */function Open_ajax ($action) {$this->is_ajax=true; $this->ajax_action_name= $action;}/** * Get the code that shows "next page" * * @par AM String $style * @return String */function next_page ($style = ") {if ($this->nowindex< $this->totalpage) {retur n $this->_get_link ($this->_get_url ($this->nowindex+1), $this->next_page, $style); } return '. $this->next_page. '; }/** * Gets the code that displays "previous page" * * @param string $style * @return String */function pre_page ($style = ") {if ($this->nowindex> 1) {return $this->_get_link ($this->_get_url ($this->nowindex-1), $this->pre_page, $style);} return '. $ This->pre_page. '; }/** * Gets the code that displays "Home page" * @return String */function first_page ($style = ") {if ($this->nowindex==1) {return '. $this First_page. '; } return $this->_get_link ($this->_get_url (1), $this->first_page, $style); /** * Get the code that shows "last" * * @return String */function Last_page($style = ") {if ($this->nowindex== $this->totalpage) {return '. $this->last_page. ';} return $this->_get_link ($this- >_get_url ($this->totalpage), $this->last_page, $style); } function Nowbar ($style = ", $nowindex _style=") {$plus =ceil ($this->pagebarnum/2), if ($this->pagebarnum-$plus + $this->nowindex> $this->totalpage) $plus = ($this->pagebarnum-$this->totalpage+ $this->nowindex) ; $begin = $this->nowindex-$plus +1; $begin = ($begin >=1)? $begin: 1; $return = "; for ($i = $begin; $i < $begin + $this->pagebarnum; $i + +) {if ($i <= $this->totalpage) {if ($i! = $this->nowindex ) $return. = $this->_get_text ($this->_get_link ($this->_get_url ($i), $i, $style)); else $return. = $this->_get_text ('. $i. '); }else{break;} $return. = "\ n"; } unset ($begin); return $return; /** * Gets the code that shows the Jump button * * @return String */function Select () {$return = "; for ($i =1; $i <= $this->totalpage; $i + +) {if ($ i== $this->nowindex) {$return. = '. $i. ';} else{$return. = '. $i. ';}} Unset ($i); $return. = '; return $return; }/** * Gets the value required in the MySQL statement * * @return String */function offset () {return $this->offset;}/** * Controls the pagination display style (you can add the corresponding wind Lattice) * * @param int $mode * @return String */function Show ($mode =1) {switch ($mode) {case ' 1 ': $this->next_page= ' next page '; $this->pre_page= ' previous page '; return $this->pre_page (). $this->nowbar (). $this->next_page (). ' Section '. $this->select (). ' Page '; Break Case ' 2 ': $this->next_page= ' next '; $this->pre_page= ' Previous '; $this->first_page= ' home '; $this->last_page= ' last '; return $this->first_page (). " ". $this->pre_page (). ' [Page '. $this->nowindex. '] '. $this->next_page (). " ". $this->last_page (); Break Case ' 3 ': $this->next_page= ' next page '; $this->pre_page= ' previous page '; $this->first_page= ' home '; $this->last_page= ' last '; return $this->first_page (). $this->pre_page (). $this->next_page (). $this->last_page (); Break Case ' 4 ': $this->next_page= ' next page '; $this->pre_page= ' previous page '; return $this->pre_page (). $tHis->nowbar (). $this->next_page (); Break Case ' 5 ': Return $this->pre_bar (). $this->pre_page (). $this->nowbar (). $this->next_page (). $this->next _bar (); Break }/*----------------Private Function (private method)-----------------------*//** * Set URL header address * @param: String $url * @return bool EAN */function _set_url ($url = "") {if (!empty ($url)) {//Manually set $this->url= $url. (Stristr ($url, '? '))? ' & ': '? '). $this->page_name. " ="; }else{//Auto Get if (empty ($_server[' query_string ')) {//Not present query_string $this->url=$_server[' Request_uri ']. "?". $this->page_name. " ="; }else{//if (Stristr ($_server[' query_string '), $this->page_name. ' = ')) {//Address exists page parameter $this->url=str_replace ($this->page_name. ' = '. $this->nowindex, ' ', $_server[' Request_uri ']); $last = $this->url[strlen ($this->url)-1]; if ($last = = '? ' | | $last = = ' & ') {$this->url.= $this->page_name. " ="; }else{$this->url.= ' & '. $this->page_name. " ="; }}else{//$this->url=$_server[' Request_uri ']. ' & '. $this->page_name. ' ='; }//end if}//end if}//end if}/** * Set Current page * */function _set_nowindex ($nowindex) {if (empty ($nowindex)) {//System gets if (Isse T ($_get[$this->page_name]) {$this->nowindex=intval ($_get[$this->page_name]);}} else{//Manually set $this->nowindex=intval ($nowindex);}} /** * Returns the address value for the specified page * * @param int $pageno * @return string $url */function _get_url ($pageno =1) {return $this->url. $pag Eno }/** * Get pagination display text, for example _get_text (' 1 ') will return by default [1] * * @param string $str * @return string $url */function _get_text ($STR) {R Eturn $this->format_left. $str. $this->format_right; }/** * Get the link address */function _get_link ($url, $text, $style = ") {$style = (empty ($style))? ': ' class= '. $style. '"; if ($this->is_ajax) {//If you are using AJAX mode return '. $text. ';} else{return '. $text. ';}} /** * Error Handling Method */Function error ($function, $errormsg) {die (' Error in file ' __file__ ', function '. $function. ' (): '. $errormsg); }}?>

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