search

Home >Backend Development >PHP Tutorial >PHP paging class calling example tutorial

PHP paging class calling example tutorial

WBOY
WBOYOriginal
2016-07-25 08:52:36801browse

  3. /**

  4. * filename: ext_page.class.php
  5. * @package:phpbean
  6. * description: Super powerful paging class, four paging modes, and the default paging style is similar to Baidu and Google.
  7. * 2.0 added functions: support custom styles, custom styles, support both PHP4 and PHP5,
  8. * example:
  9. * Four paging modes:
  10. require_once('../libs/classes/page.class.php' );
  11. $page=new page(array('total'=>1000,'perpage'=>20));
  12. echo 'mode:1
    '.$page->show();
  13. echo '
    mode:2
    '.$page->show(2);
  14. echo '
    mode:3
    '.$page->show(3);
  15. echo '
    mode:4
    '.$page->show(4);
  16. Turn on AJAX: bbs.it-home.org
  17. $ajaxpage=new page(array('total'=> 1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
  18. echo 'mode:1
    '.$ajaxpage->show( );
  19. Adopt inherited custom paging display mode:
  20. */
  21. class Page
  22. {
  23. /**
  24. * config ,public
  25. */
  26. var $page_name="p";//page tag , used to control the url page. For example, PB_page in xxx.php?PB_page=2
  27. var $next_page='>';//Next page
  28. var $pre_page='<';//Previous page
  29. var $first_page='First' ;//Homepage
  30. var $last_page='Last';//Last page
  31. var $pre_bar='<<';//Previous paging bar
  32. var $next_bar='>>';//Next A paging bar
  33. var $format_left='';
  34. var $format_right='';
  35. var $is_ajax=false;//Whether AJAX paging mode is supported

  36. /**

  37. * private
  38. *
  39. * /
  40. var $pagebarnum=10;//Control the number of record bars.
  41. var $totalpage=0;//Total number of pages
  42. var $ajax_action_name='';//AJAX action name
  43. var $nowindex=1;//Current page
  44. var $url="";//url address header
  45. var $offset=0;

  46. /**

  47. * constructor构造函数
  48. *
  49. * @param array $array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']...
  50. */
  51. function page($array)
  52. {
  53. if(is_array($array)){
  54. //if(!array_key_exists ('total',$array))$this->error(__FUNCTION__,'need a param of total');
  55. $total=intval($array['total']);
  56. $perpage=(array_key_exists(' perpage',$array))?intval($array['perpage']):10;
  57. $nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'' ;
  58. $url=(array_key_exists('url',$array))?$array['url']:'';
  59. }else{
  60. $total=$array;
  61. $perpage=10;
  62. $nowindex=' ';
  63. $url='';
  64. }
  65. //if((!is_int($total))||($total<0))$this->error(__FUNCTION__,$total.' is not a positive integer!');
  66. if((!is_int($perpage))||($perpage<=0))$this->error(__FUNCTION__,$perpage.' is not a positive integer!');
  67. if (!empty($array['page_name']))$this->set('page_name',$array['page_name']);//Set pagename
  68. $this->_set_nowindex($nowindex);/ /Set the current page
  69. $this->_set_url($url);//Set the link address
  70. $this->totalpage=ceil($total/$perpage);
  71. $this->offset=($this- >nowindex-1)*$perpage;
  72. if(!empty($array['ajax']))$this->open_ajax($array['ajax']);//Open AJAX mode
  73. }
  74. / **
  75. * Set the value of the specified variable name in the class. If the change does not belong to this class, an exception will be thrown
  76. *
  77. * @param string $var
  78. * @param string $value
  79. */
  80. function set($var,$value)
  81. {
  82. if(in_array($var,get_object_vars($this)))
  83. $this->$var=$value;
  84. else {
  85. $this->error(__FUNCTION__,$var." does not belong to PB_Page!");
  86. }

  87. }

  88. /**
  89. * Turn on inverted AJAX mode
  90. *
  91. * @ param string $action Default ajax triggered action.
  92. */
  93. function open_ajax($action)
  94. {
  95. $this->is_ajax=true;
  96. $this->ajax_action_name=$action;
  97. }
  98. /**
  99. * Get the code to display "next page"
  100. *
  101. * @param string $style
  102. * @return string
  103. */
  104. function next_page($style='')
  105. {
  106. if($this->nowindex<$this->totalpage){
  107. return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);
  108. }
  109. return ''.$this->next_page.'';
  110. }

  111. /**

  112. * Get the code to display "previous page"
  113. *
  114. * @param string $style
  115. * @return string
  116. */
  117. function pre_page($style='')
  118. {
  119. if($this->nowindex>1){
  120. return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);
  121. }
  122. return ''.$this->pre_page.'';
  123. }

  124. /**

  125. * Get the code to display "Home Page"
  126. *
  127. * @return string
  128. */
  129. function first_page($style='')
  130. {
  131. if($this->nowindex==1){
  132. return ''.$this->first_page.'';
  133. }
  134. return $this->_get_link($this->_get_url(1),$this->first_page,$style);
  135. }

  136. /**

  137. * Get the code to display the "last page"
  138. *
  139. * @return string
  140. */
  141. function last_page($style='')
  142. {
  143. if($this->nowindex==$this->totalpage){
  144. return ''.$this->last_page.'';
  145. }
  146. return $this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style);
  147. }

  148. function nowbar($style='',$nowindex_style='c')

  149. {
  150. $plus=ceil($this->pagebarnum/2);
  151. if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
  152. $begin=$this->nowindex-$plus+1;
  153. $begin=($begin>=1)?$begin:1;
  154. $return='';
  155. for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
  156. {
  157. if($i<=$this->totalpage){
  158. if($i!=$this->nowindex)
  159. $return.=$this->_get_text($this->_get_link($this->_get_url($i),$i,$style));
  160. else
  161. $return.=$this->_get_text(''.$i.'');
  162. }else{
  163. break;
  164. }
  165. $return.="n";
  166. }
  167. unset($begin);
  168. return $return;
  169. }
  170. /**
  171. * Get the code to display the jump button
  172. *
  173. * @return string
  174. */
  175. function select()
  176. {
  177. $return='';
  178. return $return;
  179. }

  180. /**

  181. * Get the value required for limit in the mysql statement
  182. *
  183. * @return string
  184. */
  185. function offset()
  186. {
  187. return $this->offset;
  188. }

  189. /**

  190. * 控制分页显示风格（你可以增加相应的风格）
  191. *
  192. * @param int $mode
  193. * @return string
  194. */
  195. function show($mode=1)
  196. {
  197. switch ($mode)
  198. {
  199. case '1':
  200. $this->next_page='下一页';
  201. $this->pre_page='上一页';
  202. return $this->pre_page().$this->nowbar().$this->next_page().'第'.$this->select().'页';
  203. break;
  204. case '2':
  205. $this->next_page='下一页';
  206. $this->pre_page='上一页';
  207. $this->first_page='首页';
  208. $this->last_page='尾页';
  209. return $this->first_page().$this->pre_page().'[第'.$this->nowindex.'页]'.$this->next_page().$this->last_page().'第'.$this->select().'页';
  210. break;
  211. case '3':
  212. $this->next_page='下一页';
  213. $this->pre_page='上一页';
  214. $this->first_page='首页';
  215. $this->last_page='尾页';
  216. return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();
  217. break;
  218. case '4':
  219. $this->next_page='>';
  220. $this->pre_page='<';
  221. $this->first_page='<<';
  222. $this->last_page='>>';
  223. return $this->first_page().$this->pre_page().$this->nowbar().$this->next_page().$this->last_page();
  224. break;
  225. case '5':
  226. return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
  227. break;
  228. }

  229. }

  230. /*----------------private function (私有方法)-----------------------------------------------------------*/
  231. /**
  232. * 设置url头地址
  233. * @param: String $url
  234. * @return boolean
  235. */
  236. function _set_url($url="")
  237. {
  238. if(!empty($url)){
  239. //手动设置
  240. $this->url=$url;
  241. }else{
  242. //自动获取
  243. if(empty($_SERVER['QUERY_STRING'])){
  244. //不存在QUERY_STRING时
  245. $this->url=$_SERVER['REQUEST_URI']."?".$this->page_name."=";
  246. }else{
  247. //
  248. if(stristr($_SERVER['QUERY_STRING'],$this->page_name.'=')){
  249. //地址存在页面参数
  250. $this->url=str_replace($this->page_name.'='.$this->nowindex,'',$_SERVER['REQUEST_URI']);
  251. $last=$this->url[strlen($this->url)-1];
  252. if($last=='?'||$last=='&'){
  253. $this->url.=$this->page_name."=";
  254. }else{
  255. $this->url.='&'.$this->page_name."=";
  256. }
  257. }else{
  258. //
  259. $this->url=$_SERVER['REQUEST_URI'].'&'.$this->page_name.'=';
  260. }//end if
  261. }//end if
  262. }//end if
  263. }

  264. /**

  265. * 设置当前页面
  266. *
  267. */
  268. function _set_nowindex($nowindex)
  269. {
  270. if(empty($nowindex)){
  271. //系统获取

  272. if(isset($_GET[$this->page_name])){

  273. $this->nowindex=intval($_GET[$this->page_name]);
  274. }
  275. }else{
  276. //手动设置
  277. $this->nowindex=intval($nowindex);
  278. }
  279. }

  280. /**

  281. * 为指定的页面返回地址值
  282. *
  283. * @param int $pageno
  284. * @return string $url
  285. */
  286. function _get_url($pageno=1)
  287. {
  288. return $this->url.$pageno . '.html';
  289. }

  290. /**

  291. * 获取分页显示文字，比如说默认情况下_get_text('1')将返回[1]
  292. *
  293. * @param String $str
  294. * @return string $url
  295. */
  296. function _get_text($str)
  297. {
  298. return $this->format_left.$str.$this->format_right;
  299. }

  300. /**

  301. * 获取链接地址
  302. */
  303. function _get_link($url,$text,$style=''){
  304. $style=(empty($style))?'':'class="'.$style.'"';
  305. if($this->is_ajax){
  306. //如果是使用AJAX模式
  307. return ''.$text.'';
  308. }else{
  309. return ''.$text.'';
  310. }
  311. }
  312. /**
  313. * 出错处理方式
  314. */
  315. function error($function,$errormsg)
  316. {
  317. die('Error in file '.__FILE__.' ,Function '.$function.'() :'.$errormsg);
  318. }
  319. }
  320. ?>

复制代码


Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：PHP paging class code example, paging class that can be used in the PHP frameworkNext article：PHP paging class code example, paging class that can be used in the PHP framework

Related articles

See more