Home Backend Development PHP Tutorial A PHP paging code (with renderings)

A PHP paging code (with renderings)

Jul 25, 2016 am 08:52 AM

  1. /**

  2. * Simple paging class
  3. * Page.class.php
  4. */
  5. class Page
  6. {
  7. private $page_num; //Number of messages displayed on each page
  8. private $page_all_no; //Total number of messages
  9. private $page_len; //How many page numbers are displayed
  10. private $page; //Current page number
  11. private $page_max; //Maximum number of pages
  12. private $page_no_array; //Array of page numbers
  13. public $start_num; // The starting value of the query statement limit
  14. private $page_change; //At which page number the page number starts to increase
  15. private $URL; //Get the URL of the current page
  16. public function __construct($page_all_no, $page_num=5, $page_len=5)

  17. {
  18. $this->page_all_no = intval($page_all_no);
  19. $this->page_num = intval($page_num);
  20. $this->page_len = intval( $page_len);
  21. $this->URL = $_SERVER['REQUEST_URI'];
  22. $this->max_page(); //Get the maximum number of pages
  23. $this->page_no(); // Get the current page number
  24. $this->page_no_array(); //Page number array
  25. $this->start_num(); //Get the starting value of limit in the sql statement
  26. $this->change_page(); //Get the page number where the increment starts $this->page_change
  27. $this->getURL(); //Get the current URL and process it and return
  28. }
  29. private function isArray($str ,$str_self)

  30. {
  31. if(!is_array($str)) throw new Exception("$str_self must be an Array type");
  32. }
  33. private function page_no()

  34. {
  35. $this->page = isset($_GET['page']) ? $_GET['page'] : 1;
  36. if(isset($_GET['page']) && $_GET['page'] page = 1;
  37. if(isset($_GET['page']) && $_GET['page'] > $this->page_max) $this->page = $this->page_max;
  38. return $this->page;
  39. }
  40. private function max_page()

  41. {
  42. return $this->page_max = $this->page_all_no page_all_no/$this->page_num);
  43. }
  44. private function change_page()

  45. {
  46. return $this-> page_change = ceil($this->page_len / 2);
  47. }
  48. private function page_no_array()

  49. {
  50. return $this->page_no_array = range(1, $this-> ;page_max);
  51. }
  52. private function start_num()

  53. {
  54. return $this->start_num = $this->page_num * ($this->page - 1);
  55. }
  56. private function getURL()

  57. {
  58. if(!empty($_SERVER['argc']) ? $_SERVER['argc'] == 0 : strpos($_SERVER[ 'REQUEST_URI'], '?') === false)
  59. {
  60. $this->URL = $this->URL.'?';
  61. }else{
  62. $url_a = "/?page=[0 -9]{1,}/";
  63. $url_b = "/&page=[0-9]{1,}/";
  64. ereg("?page=[0-9]{1,}", $this ->URL) ? $this->URL = preg_replace($url_a, "?", $this->URL):
  65. ereg("&page=[0-9]{1,}", $this- >URL) ? $this->URL = preg_replace($url_b, "&", $this->URL):$this->URL = $this->URL.'&';
  66. }
  67. return $this->URL;
  68. }
  69. private function header_info($total_data_modifier='Total number:', $total_page_modifier='Total number of pages:', $current_page_modifier='Current page:' , $header_info_modifier='', $header_data_color = 'red'){

  70. if($this->page_max != 1 && $this->page_all_no != 0)
  71. {
  72. $header_info = $total_data_modifier.''.$this->page_all_no.'';
  73. $header_info .= $total_page_modifier.''.$this->page_max.'';
  74. $header_info .= $current_page_modifier.''.$this->page.' ."rn";
  75. if(!empty($ header_info_modifier)) $header_info = $header_info_modifier.$header_info;
  76. return $header_info;
  77. }else{
  78. return NULL;
  79. }
  80. }
  81. private function first($first_format = 'First page ')

  82. {
  83. return $this->page == 1 ? $first_format."rn" : ''.$first_format.''."rn";
  84. }
  85. private function last($last_format = '上一页')

  86. {
  87. if($this->page == 1) return $last_format."rn";
  88. return $this->page-1 == 1 ? ''.$last_format.''."rn" : ''.$last_format.''."rn";
  89. }
  90. private function page_num_format($separator=' ', $left_modifier='[', $right_modifier=']', $both_sides=false, $current_page_color = 'red')

  91. {
  92. empty($separator) ? $separator = ' ' : $separator;
  93. $page_array = '';
  94. if($this->page_max page_len)
  95. {
  96. for ($i=0; $i page_max; $i++)
  97. {
  98. if($this->page_no_array[$i] == $this->page)
  99. {
  100. $the[$i] = ''.$left_modifier.$this->page_no_array[$i].$right_modifier.''."rn";
  101. }else{
  102. if($i == 0)
  103. {
  104. $page_one = substr($this->URL,0,strlen($this->URL)-1);
  105. $the[$i] = ''.$left_modifier.$this->page_no_array[$i].$right_modifier.''."rn";
  106. }else{
  107. $the[$i] = ''.$left_modifier.$this->page_no_array[$i].$right_modifier.''."rn";
  108. }
  109. }
  110. $page_array .= $the[$i].$separator;
  111. }
  112. if($both_sides === false)
  113. {
  114. $page_array = substr($page_array,0,strrpos($page_array, $separator));
  115. }elseif ($both_sides === true){
  116. $page_array = $separator.$page_array;
  117. }else{
  118. throw new Exception('ERROR: $both_sides must be a boolean type.');
  119. }
  120. }else{
  121. if($this->page page_change)
  122. {
  123. $i_start = 0;
  124. }else{
  125. $i_start = $this->page - $this->page_change;
  126. //如果最大的页码已显示,那么开始页就不会在递增
  127. if($i_start >= $this->page_max - $this->page_len){
  128. $i_start = $this->page_max - $this->page_len;
  129. }
  130. }
  131. $i_end = ($i_start+$this->page_len) - 1;
  132. for ($i = $i_start; $i {
  133. if($this->page_no_array[$i] == $this->page)
  134. {
  135. $the[$i] = ''.$left_modifier.$this->page_no_array[$i].$right_modifier.''."rn";
  136. }else{
  137. if($i == 0)
  138. {
  139. $page_one = substr($this->URL,0,strlen($this->URL)-1);
  140. $the[$i] = ''.$left_modifier.$this->page_no_array[$i].$right_modifier.''."rn";
  141. }else{
  142. $the[$i] = ''.$left_modifier.$this->page_no_array[$i].$right_modifier.''."rn";
  143. }
  144. }
  145. $page_array .= $the[$i].$separator;
  146. }
  147. if($both_sides === false)
  148. {
  149. $page_array = substr($page_array,0,strrpos($page_array, $separator));
  150. }elseif ($both_sides === true){
  151. $page_array = $separator.$page_array;
  152. }else{
  153. throw new Exception('ERROR: $both_sides must be a boolean type.');
  154. }
  155. }
  156. return $page_array;
  157. }
  158. private function next($next_format = '下一页')

  159. {
  160. if($this->page >= $this->page_max) return $next_format."rn";
  161. return ''.$next_format.''."rn";
  162. }
  163. private function end($end_format = '最后一页')

  164. {
  165. return $this->page >= $this->page_max ? $end_format."rn" : ''.$end_format.''."rn";
  166. }
  167. public function select_page($target='self', $select_page_mode='PMA', $value_left_modifier='', $value_right_modifier='')

  168. {
  169. if($this->page_max != 1 && $this->page_all_no != 0)
  170. {
  171. if($select_page_mode === 'NORMAL')
  172. {
  173. $page_no_array = $this->page_no_array;
  174. }elseif($select_page_mode === 'PMA'){
  175. $page_no_array = $this->PMA_page_no_array();
  176. }else{
  177. throw new Exception('$select_page_mode is unknown mode');
  178. }
  179. $select_page = '';
  180. $select_page .= ''. "n";
  181. return $select_page;
  182. }else{
  183. return NULL;
  184. }
  185. }
  186. private function PMA_page_no_array()

  187. {
  188. $showAll = 200;
  189. $sliceStart = 5;
  190. $sliceEnd = 5;
  191. $percent = 20;
  192. $range = 10;
  193. if ($this->page_max $this->PMA_page_no_array = range(1, $this->page_max);

  194. } else {
  195. $this->PMA_page_no_array = array();
  196. for ($i = 1; $i $this->PMA_page_no_array[] = $i;
  197. }
  198. for ($i = $this->page_max - $sliceEnd; $i page_max; $i++) {
  199. $this->PMA_page_no_array[] = $i;
  200. }
  201. $i = $sliceStart;
  202. $x = $this->page_max - $sliceEnd;
  203. $met_boundary = false;
  204. while ($i if ($i >= ($this->page - $range) && $i page + $range)) {
  205. $i++;
  206. $met_boundary = true;
  207. } else {
  208. $i = $i + floor($this->page_max / $percent);
  209. if ($i > ($this->page - $range) && !$met_boundary) {
  210. $i = $this->page - $range;
  211. }
  212. }
  213. if ($i > 0 && $i $this->PMA_page_no_array[] = $i;
  214. }
  215. }
  216. sort($this->PMA_page_no_array);
  217. $this->PMA_page_no_array = array_unique($this->PMA_page_no_array);
  218. }
  219. return $this->PMA_page_no_array;
  220. }
  221. public function key_change_page(){

  222. echo '';
  223. }
  224. public function eshow()

  225. {
  226. return $this->last().$this->next();
  227. }
  228. public function showForHelp()

  229. {
  230. return $this->first('首页', '').$this->last('上一页', '').$this->page_num_format('', '', '', false, '#FF8500').$this->next('下一页', '').$this->end('尾页', '');
  231. }
  232. public function show()

  233. {
  234. return $this->header_info().$this->first('首页', '').$this->last('上一页', '').$this->page_num_format('', '', '', false, '#FF8500').$this->next('下一页', '').$this->end('尾页', '');
  235. }
  236. }
复制代码

2. How to use php paging class:

  1. header('content-type:text/html;charset=utf-8');
  2. include('Page.class.php');
  3. $page_all_no = 12000; //Total number of data items
  4. $page_num = 25; //Set the number of items displayed on each page
  5. $page_len = 7; //The maximum number of page numbers to display
  6. $page = new Page($page_all_no, $page_num, $page_len);
  7. $start_num = $ page->start_num;
  8. $sql = "select * from table limit {$start_num}, {$page_num}";
  9. $page->key_change_page(); //arrow keys to turn pages
  10. var_dump($sql);
  11. //It comes with three paging forms, you can add new methods as needed, call
  12. echo '

    '.$page->select_page('self', 'NORMAL').''; //The second parameter here defaults to PMA mode. The difference between the two modes is given above

  13. echo '

    '.$page->eshow().'

    > ;';
  14. echo '

    '.$page->show().'

    ';
Copy code

3, PHP paging class, rendering: A PHP paging code (with renderings)



Statement of this Website
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

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

How does session hijacking work and how can you mitigate it in PHP? How does session hijacking work and how can you mitigate it in PHP? Apr 06, 2025 am 12:02 AM

Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.

What are Enumerations (Enums) in PHP 8.1? What are Enumerations (Enums) in PHP 8.1? Apr 03, 2025 am 12:05 AM

The enumeration function in PHP8.1 enhances the clarity and type safety of the code by defining named constants. 1) Enumerations can be integers, strings or objects, improving code readability and type safety. 2) Enumeration is based on class and supports object-oriented features such as traversal and reflection. 3) Enumeration can be used for comparison and assignment to ensure type safety. 4) Enumeration supports adding methods to implement complex logic. 5) Strict type checking and error handling can avoid common errors. 6) Enumeration reduces magic value and improves maintainability, but pay attention to performance optimization.

Describe the SOLID principles and how they apply to PHP development. Describe the SOLID principles and how they apply to PHP development. Apr 03, 2025 am 12:04 AM

The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.

How to debug CLI mode in PHPStorm? How to debug CLI mode in PHPStorm? Apr 01, 2025 pm 02:57 PM

How to debug CLI mode in PHPStorm? When developing with PHPStorm, sometimes we need to debug PHP in command line interface (CLI) mode...

How to send a POST request containing JSON data using PHP's cURL library? How to send a POST request containing JSON data using PHP's cURL library? Apr 01, 2025 pm 03:12 PM

Sending JSON data using PHP's cURL library In PHP development, it is often necessary to interact with external APIs. One of the common ways is to use cURL library to send POST�...

How to automatically set permissions of unixsocket after system restart? How to automatically set permissions of unixsocket after system restart? Mar 31, 2025 pm 11:54 PM

How to automatically set the permissions of unixsocket after the system restarts. Every time the system restarts, we need to execute the following command to modify the permissions of unixsocket: sudo...

See all articles