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? ??? ?? PHP ???? php+mysql分頁(yè)類

php+mysql分頁(yè)類

Jul 25, 2016 am 08:43 AM
封裝的類：
  1. /*********************************************
  2. 類名： PageSupport
  3. 功能：分頁(yè)顯示mysql數(shù)據(jù)庫(kù)中的數(shù)據(jù)
  4. ***********************************************/
  5. class PageSupport{
  6. //屬性
  7. var $sql; //所要顯示數(shù)據(jù)的SQL查詢語(yǔ)句
  8. var $page_size; //每頁(yè)顯示最多行數(shù)
  10. var $start_index; //所要顯示記錄的首行序號(hào)
  11. var $total_records; //記錄總數(shù)
  12. var $current_records; //本頁(yè)讀取的記錄數(shù)
  13. var $result; //讀出的結(jié)果
  15. var $total_pages; //總頁(yè)數(shù)
  16. var $current_page; //當(dāng)前頁(yè)數(shù)
  17. var $display_count = 30; //顯示的前幾頁(yè)和后幾頁(yè)數(shù)
  19. var $arr_page_query; //數(shù)組，包含分頁(yè)顯示需要傳遞的參數(shù)
  21. var $first;
  22. var $prev;
  23. var $next;
  24. var $last;
  26. //方法
  27. /*********************************************
  28. 構(gòu)造函數(shù)：__construct()
  29. 輸入?yún)?shù)：
  30. $ppage_size：每頁(yè)顯示最多行數(shù)
  31. ***********************************************/
  32. function PageSupport($ppage_size)
  33. {
  34. $this->page_size=$ppage_size;
  35. $this->start_index=0;
  36. }
  39. /*********************************************
  40. 構(gòu)造函數(shù)：__destruct()
  41. 輸入?yún)?shù)：
  42. ***********************************************/
  43. function __destruct()
  44. {
  46. }
  48. /*********************************************
  49. get函數(shù)：__get()
  50. ***********************************************/
  51. function __get($property_name)
  52. {
  53. if(isset($this->$property_name))
  54. {
  55. return($this->$property_name);
  56. }
  57. else
  58. {
  59. return(NULL);
  60. }
  61. }
  63. /*********************************************
  64. set函數(shù)：__set()
  65. ***********************************************/
  66. function __set($property_name, $value)
  67. {
  68. $this->$property_name = $value;
  69. }
  71. /*********************************************
  72. 函數(shù)名：read_data
  73. 功能： 根據(jù)SQL查詢語(yǔ)句從表中讀取相應(yīng)的記錄
  74. 返回值：屬性二維數(shù)組result[記錄號(hào)][字段名]
  75. ***********************************************/
  76. function read_data()
  77. {
  78. $psql=$this->sql;
  80. //查詢數(shù)據(jù)，數(shù)據(jù)庫(kù)鏈接等信息應(yīng)在類調(diào)用的外部實(shí)現(xiàn)
  81. $result=mysql_query($psql) or die(mysql_error());
  82. $this->total_records=mysql_num_rows($result);
  84. //利用LIMIT關(guān)鍵字獲取本頁(yè)所要顯示的記錄
  85. if($this->total_records>0)
  86. {
  87. $this->start_index = ($this->current_page-1)*$this->page_size;
  88. $psql=$psql. " LIMIT ".$this->start_index." , ".$this->page_size;
  90. $result=mysql_query($psql) or die(mysql_error());
  91. $this->current_records=mysql_num_rows($result);
  93. //將查詢結(jié)果放在result數(shù)組中
  94. $i=0;
  95. while($row=mysql_fetch_Array($result))
  96. {
  97. $this->result[$i]=$row;
  98. $i++;
  99. }
  100. }
  103. //獲取總頁(yè)數(shù)、當(dāng)前頁(yè)信息
  104. $this->total_pages=ceil($this->total_records/$this->page_size);
  106. $this->first=1;
  107. $this->prev=$this->current_page-1;
  108. $this->next=$this->current_page+1;
  109. $this->last=$this->total_pages;
  110. }
  112. /*********************************************
  113. 函數(shù)名：standard_navigate()
  114. 功能： 顯示首頁(yè)、下頁(yè)、上頁(yè)、未頁(yè)
  115. ***********************************************/
  116. function standard_navigate()
  117. {
  118. echo "
    ";
  119. echo "
    ";
  121. echo "第".$this->current_page."頁(yè)/共".$this->total_pages."頁(yè)";
  122. echo " ";
  124. echo "跳到頁(yè)";
  125. echo "";
  128. //生成導(dǎo)航鏈接
  129. if ($this->current_page > 1) {
  130. echo "first.">首頁(yè)|";
  131. echo "prev.">上一頁(yè)|";
  132. }
  134. if( $this->current_page total_pages) {
  135. echo "next.">下一頁(yè)|";
  136. echo "last.">末頁(yè)";
  137. }
  139. echo "
    140. ";
  140. echo "
";
  • }
  • /*********************************************
  • 函數(shù)名：full_navigate()
  • 功能： 顯示首頁(yè)、下頁(yè)、上頁(yè)、未頁(yè)
  • 生成導(dǎo)航鏈接 如1 2 3 ... 10 11
  • ***********************************************/
  • function full_navigate()
  • {
  • echo "
    ";
  • echo "
    ";
  • echo "第".$this->current_page."頁(yè)/共".$this->total_pages."頁(yè)";
  • echo " ";
  • echo "跳到頁(yè)";
  • echo "";
  • //生成導(dǎo)航鏈接 如1 2 3 ... 10 11
  • $front_start = 1;
  • if($this->current_page > $this->display_count){
  • $front_start = $this->current_page - $this->display_count;
  • }
  • for($i=$front_start;$icurrent_page;$i++){
  • echo "[".$i ."] ";
  • }
  • echo "[".$this->current_page."]";
  • $displayCount = $this->display_count;
  • if($this->total_pages > $displayCount&&($this->current_page+$displayCount)total_pages){
  • $displayCount = $this->current_page+$displayCount;
  • }else{
  • $displayCount = $this->total_pages;
  • }
  • for($i=$this->current_page+1;$i echo "[".$i ."] ";
  • }
  • //生成導(dǎo)航鏈接
  • if ($this->current_page > 1) {
  • echo "first.">首頁(yè)|";
  • echo "prev.">上一頁(yè)|";
  • }
  • if( $this->current_page total_pages) {
  • echo "next.">下一頁(yè)|";
  • echo "last.">末頁(yè)";
  • }
  • echo "
    • ";
  • echo "
    • ";
  • }
  • }
  • ?>
    • 復(fù)制代碼
    寫在php頁(yè)面里面的代碼：
    3. include_once("fenye_php.php"); //引入類
    5. ///////////////////////////////////////////////////////////////////////
    6. $con = mysql_connect("localhost","root","");
    7. if (!$con)
    8. {
    9. die('Could not connect: ' . mysql_error());
    10. }
    12. mysql_select_db("myblog", $con); //選取數(shù)據(jù)庫(kù)
    14. $PAGE_SIZE=10; //設(shè)置每頁(yè)顯示的數(shù)目
    16. ///////////////////////////////////////////////////////////////////////
    18. $pageSupport = new PageSupport($PAGE_SIZE); //實(shí)例化PageSupport對(duì)象
    20. $current_page=$_GET["current_page"];//分頁(yè)當(dāng)前頁(yè)數(shù)
    22. if (isset($current_page)) {
    24. $pageSupport->__set("current_page",$current_page);
    26. } else {
    28. $pageSupport->__set("current_page",1);
    30. }
    33. $pageSupport->__set("sql","select * from article ");
    34. $pageSupport->read_data();//讀數(shù)據(jù)
    36. if ($pageSupport->current_records > 0) //如果數(shù)據(jù)不為空，則組裝數(shù)據(jù)
    37. {
    38. for ($i=0; $icurrent_records; $i++)
    39. {
    40. $title = $pageSupport->result[$i]["title"];
    41. $content = $pageSupport->result[$i]["content"];
    43. $part=substr($content,0,400);
    44. //循環(huán)輸出每條數(shù)據(jù)
    45. echo '
    46. '.$title.'
    47. '.$part.'
    49. update delet
    • ';
  • }
  • }
  • $pageSupport->standard_navigate(); //調(diào)用類里面的這個(gè)函數(shù)，顯示出分頁(yè)HTML
  • //關(guān)閉數(shù)據(jù)庫(kù)
  • mysql_close($con);
  • ?>
    • 復(fù)制代碼
    來(lái)自：http://blog.csdn.net/phpfenghuo/article/details/23207099
    分頁(yè), php, mysql


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