php经典分页
<span style="color: #000000">php </span><span style="color: #0000ff">class</span><span style="color: #000000"> PageView{ </span><span style="color: #008000">/*</span><span style="color: #008000">*页码*</span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #800080">$pageNo</span> = 1<span style="color: #000000">; </span><span style="color: #008000">/*</span><span style="color: #008000">*页大小*</span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #800080">$pageSize</span> = 20<span style="color: #000000">; </span><span style="color: #008000">/*</span><span style="color: #008000">*共多少页*</span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #800080">$pageCount</span> = 0<span style="color: #000000">; </span><span style="color: #008000">/*</span><span style="color: #008000">*总记录数*</span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #800080">$totalNum</span> = 0<span style="color: #000000">; </span><span style="color: #008000">/*</span><span style="color: #008000">*偏移量,当前页起始行*</span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #800080">$offSet</span> = 0<span style="color: #000000">; </span><span style="color: #008000">/*</span><span style="color: #008000">*每页数据*</span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #800080">$pageData</span> = <span style="color: #0000ff">array</span><span style="color: #000000">(); </span><span style="color: #008000">/*</span><span style="color: #008000">*是否有上一页*</span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #800080">$hasPrePage</span> = <span style="color: #0000ff">true</span><span style="color: #000000">; </span><span style="color: #008000">/*</span><span style="color: #008000">*是否有下一页*</span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #800080">$hasNextPage</span> = <span style="color: #0000ff">true</span><span style="color: #000000">; </span><span style="color: #0000ff">public</span> <span style="color: #800080">$pageNoList</span> = <span style="color: #0000ff">array</span><span style="color: #000000">(); </span><span style="color: #0000ff">public</span> <span style="color: #800080">$jsFunction</span> ='jsFunction'<span style="color: #000000">; </span><span style="color: #008000">/*</span><span style="color: #008000">* * * @param unknown_type $count 总行数 * @param unknown_type $size 分页大小 * @param unknown_type $string </span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #0000ff">function</span> __construct(<span style="color: #800080">$count</span>=0, <span style="color: #800080">$size</span>=20,<span style="color: #800080">$pageNo</span>=1,<span style="color: #800080">$pageData</span> =<span style="color: #0000ff">array</span>(),<span style="color: #800080">$jsFunction</span>='jsFunction'<span style="color: #000000">){ </span><span style="color: #800080">$this</span>->totalNum = <span style="color: #800080">$count</span>;<span style="color: #008000">//</span><span style="color: #008000">总记录数</span> <span style="color: #800080">$this</span>->pageSize = <span style="color: #800080">$size</span>;<span style="color: #008000">//</span><span style="color: #008000">每页大小</span> <span style="color: #800080">$this</span>->pageNo = <span style="color: #800080">$pageNo</span><span style="color: #000000">; </span><span style="color: #008000">//</span><span style="color: #008000">计算总页数</span> <span style="color: #800080">$this</span>->pageCount = <span style="color: #008080">ceil</span>(<span style="color: #800080">$this</span>->totalNum/<span style="color: #800080">$this</span>-><span style="color: #000000">pageSize); </span><span style="color: #800080">$this</span>->pageCount = (<span style="color: #800080">$this</span>->pageCount$this-><span style="color: #000000">pageCount; </span><span style="color: #008000">//</span><span style="color: #008000">检查pageNo</span> <span style="color: #800080">$this</span>->pageNo = <span style="color: #800080">$this</span>->pageNo == 0 ? 1 : <span style="color: #800080">$this</span>-><span style="color: #000000">pageNo; </span><span style="color: #800080">$this</span>->pageNo = <span style="color: #800080">$this</span>->pageNo > <span style="color: #800080">$this</span>->pageCount? <span style="color: #800080">$this</span>->pageCount : <span style="color: #800080">$this</span>-><span style="color: #000000">pageNo; </span><span style="color: #008000">//</span><span style="color: #008000">计算偏移</span> <span style="color: #800080">$this</span>->offset = ( <span style="color: #800080">$this</span>->pageNo - 1 ) * <span style="color: #800080">$this</span>-><span style="color: #000000">pageSize; </span><span style="color: #008000">//</span><span style="color: #008000">计算是否有上一页下一页</span> <span style="color: #800080">$this</span>->hasPrePage = <span style="color: #800080">$this</span>->pageNo == 1 ?<span style="color: #0000ff">false</span>:<span style="color: #0000ff">true</span><span style="color: #000000">; </span><span style="color: #800080">$this</span>->hasNextPage = <span style="color: #800080">$this</span>->pageNo >= <span style="color: #800080">$this</span>->pageCount ?<span style="color: #0000ff">false</span>:<span style="color: #0000ff">true</span><span style="color: #000000">; </span><span style="color: #800080">$this</span>->pageData = <span style="color: #800080">$pageData</span><span style="color: #000000">; </span><span style="color: #800080">$this</span>->jsFunction = <span style="color: #800080">$jsFunction</span><span style="color: #000000">; } </span><span style="color: #008000">/*</span><span style="color: #008000">* * 分页算法 * @return </span><span style="color: #008000">*/</span> <span style="color: #0000ff">private</span> <span style="color: #0000ff">function</span><span style="color: #000000"> generatePageList(){ </span><span style="color: #800080">$pageList</span> = <span style="color: #0000ff">array</span><span style="color: #000000">(); </span><span style="color: #0000ff">if</span>(<span style="color: #800080">$this</span>->pageCount ){ <span style="color: #0000ff">for</span>(<span style="color: #800080">$i</span>=0;<span style="color: #800080">$i</span>$this->pageCount;<span style="color: #800080">$i</span>++<span style="color: #000000">){ </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$i</span>+1<span style="color: #000000">); } }</span><span style="color: #0000ff">else</span><span style="color: #000000">{ </span><span style="color: #0000ff">if</span>(<span style="color: #800080">$this</span>->pageNo ){ <span style="color: #0000ff">for</span>(<span style="color: #800080">$i</span>=0;<span style="color: #800080">$i</span>$i++<span style="color: #000000">){ </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$i</span>+1<span style="color: #000000">); } </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,-1<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$this</span>-><span style="color: #000000">pageCount); }</span><span style="color: #0000ff">else</span> <span style="color: #0000ff">if</span>(<span style="color: #800080">$this</span>->pageNo > <span style="color: #800080">$this</span>->pageCount - 4<span style="color: #000000">){ </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,1<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,-1<span style="color: #000000">); </span><span style="color: #0000ff">for</span>(<span style="color: #800080">$i</span>=5;<span style="color: #800080">$i</span>>0;<span style="color: #800080">$i</span>--<span style="color: #000000">){ </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$this</span>->pageCount - <span style="color: #800080">$i</span>+1<span style="color: #000000">); } }</span><span style="color: #0000ff">else</span> <span style="color: #0000ff">if</span>(<span style="color: #800080">$this</span>->pageNo > 4 && <span style="color: #800080">$this</span>->pageNo $this->pageCount - 4<span style="color: #000000">){ </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,1<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,-1<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$this</span>->pageNo -2<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$this</span>->pageNo -1<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$this</span>-><span style="color: #000000">pageNo); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$this</span>->pageNo + 1<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$this</span>->pageNo + 2<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,-1<span style="color: #000000">); </span><span style="color: #008080">array_push</span>(<span style="color: #800080">$pageList</span>,<span style="color: #800080">$this</span>-><span style="color: #000000">pageCount); } } </span><span style="color: #0000ff">return</span> <span style="color: #800080">$pageList</span><span style="color: #000000">; } </span><span style="color: #008000">/*</span><span style="color: #008000">** * 创建分页控件 * @param * @return String </span><span style="color: #008000">*/</span> <span style="color: #0000ff">public</span> <span style="color: #0000ff">function</span><span style="color: #000000"> echoPageAsDiv(){ </span><span style="color: #800080">$pageList</span> = <span style="color: #800080">$this</span>-><span style="color: #000000">generatePageList(); </span><span style="color: #800080">$pageString</span> ="<div class="pagination"><div class="page-bottom">"<span style="color: #000000">; </span><span style="color: #0000ff">if</span>(!<span style="color: #0000ff">empty</span>(<span style="color: #800080">$pageList</span><span style="color: #000000">)){ </span><span style="color: #0000ff">if</span>(<span style="color: #800080">$this</span>->pageCount >1<span style="color: #000000">){ </span><span style="color: #0000ff">if</span>(<span style="color: #800080">$this</span>-><span style="color: #000000">hasPrePage){ </span><span style="color: #800080">$pageString</span> = <span style="color: #800080">$pageString</span> ."$this->jsFunction . "(" . (<span style="color: #800080">$this</span>->pageNo-1) . ")\">上一页"<span style="color: #000000">; } </span><span style="color: #0000ff">foreach</span> (<span style="color: #800080">$pageList</span> <span style="color: #0000ff">as</span> <span style="color: #800080">$k</span>=><span style="color: #800080">$p</span><span style="color: #000000">){ </span><span style="color: #0000ff">if</span>(<span style="color: #800080">$this</span>->pageNo == <span style="color: #800080">$p</span><span style="color: #000000">){ </span><span style="color: #800080">$pageString</span> = <span style="color: #800080">$pageString</span> ."<span class="page-cur">" . <span style="color: #800080">$this</span>->pageNo . "</span>"<span style="color: #000000">; </span><span style="color: #0000ff">continue</span><span style="color: #000000">; } </span><span style="color: #0000ff">if</span>(<span style="color: #800080">$p</span> == -1<span style="color: #000000">){ </span><span style="color: #800080">$pageString</span> = <span style="color: #800080">$pageString</span> ."<span class="page-break">...</span>"<span style="color: #000000">; </span><span style="color: #0000ff">continue</span><span style="color: #000000">; } </span><span style="color: #800080">$pageString</span> = <span style="color: #800080">$pageString</span> ."$this->jsFunction . "(" . <span style="color: #800080">$p</span> . ")\">" . <span style="color: #800080">$p</span> . ""<span style="color: #000000">; } </span><span style="color: #0000ff">if</span>(<span style="color: #800080">$this</span>-><span style="color: #000000">hasNextPage){ </span><span style="color: #800080">$pageString</span> = <span style="color: #800080">$pageString</span> ."$this->jsFunction . "(" . (<span style="color: #800080">$this</span>->pageNo+1) . ")\">下一页"<span style="color: #000000">; } } } </span><span style="color: #800080">$pageString</span> = <span style="color: #800080">$pageString</span> .("</div></div>"<span style="color: #000000">); </span><span style="color: #0000ff">return</span> <span style="color: #800080">$pageString</span><span style="color: #000000">; } } </span>?>
<span style="color: #800000"><style type="text/css"> <!-- .pagination </style></span>{<span style="color: #ff0000">font-family</span>:<span style="color: #0000ff"> Tahoma</span>;<span style="color: #ff0000">overflow</span>:<span style="color: #0000ff"> hidden</span>;<span style="color: #ff0000"> padding-top</span>:<span style="color: #0000ff"> 12px</span>;<span style="color: #ff0000"> text-align</span>:<span style="color: #0000ff"> center</span>;}<span style="color: #800000"> .pagination-tab </span>{<span style="color: #ff0000"> margin-bottom</span>:<span style="color: #0000ff"> 20px</span>;}<span style="color: #800000"> .pagination a, .pagination .page-cur, .pagination .page-prev_g, .pagination .page-prev, .pagination .page-next, .pagination .page-next_g, .pagination .page-break, .pagination .page-skip </span>{<span style="color: #ff0000"> display</span>:<span style="color: #0000ff"> inline-block</span>;<span style="color: #ff0000">font-family</span>:<span style="color: #0000ff"> Tahoma,SimSun,Arial</span>;<span style="color: #ff0000"> height</span>:<span style="color: #0000ff"> 22px</span>;<span style="color: #ff0000">line-height</span>:<span style="color: #0000ff">22px</span>;<span style="color: #ff0000"> margin</span>:<span style="color: #0000ff"> 0</span>;<span style="color: #ff0000"> min-width</span>:<span style="color: #0000ff"> 16px</span>;<span style="color: #ff0000">padding</span>:<span style="color: #0000ff"> 0 5px</span>;<span style="color: #ff0000"> text-align</span>:<span style="color: #0000ff"> center</span>;<span style="color: #ff0000"> vertical-align</span>:<span style="color: #0000ff"> top</span>;<span style="color: #ff0000"> white-space</span>:<span style="color: #0000ff"> nowrap</span>;}<span style="color: #800000"> .pagination a, .pagination .page-prev_g, .pagination .page-prev, .pagination .page-next, .pagination .page-next_g, .pagination .page-cur, .pagination .page-break </span>{<span style="color: #ff0000"> border</span>:<span style="color: #0000ff"> 1px solid #ed3d83</span>;<span style="color: #ff0000"> color</span>:<span style="color: #0000ff">#e9357d</span>;<span style="color: #ff0000"> font-weight</span>:<span style="color: #0000ff">bold</span>;}<span style="color: #800000"> .pagination a:hover </span>{<span style="color: #ff0000"> border</span>:<span style="color: #0000ff"> 1px solid #ed3d83</span>;<span style="color: #ff0000">text-decoration</span>:<span style="color: #0000ff"> none</span>;<span style="color: #ff0000"> background-color</span>:<span style="color: #0000ff">#f95f9d</span>;<span style="color: #ff0000"> color</span>:<span style="color: #0000ff">#fff</span>;}<span style="color: #800000"> .pagination .page-prev_g, .pagination .page-prev, .pagination .page-next, .pagination .page-next_g </span>{<span style="color: #ff0000"> width</span>:<span style="color: #0000ff"> 36px</span>;<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff"> url(../static/img/page.gif)</span>;}<span style="color: #800000"> .pagination .page-prev </span>{<span style="color: #ff0000"> background-position</span>:<span style="color: #0000ff"> -0px -38px</span>;<span style="color: #ff0000"> padding-left</span>:<span style="color: #0000ff"> 16px</span>;}<span style="color: #800000"> .pagination .page-prev_g </span>{<span style="color: #ff0000"> background-position</span>:<span style="color: #0000ff">0px -59px</span>;<span style="color: #ff0000"> padding-left</span>:<span style="color: #0000ff"> 16px</span>;<span style="color: #ff0000"> color</span>:<span style="color: #0000ff">#cbcbcb</span>;<span style="color: #ff0000"> font-weight</span>:<span style="color: #0000ff">normal</span>;}<span style="color: #800000"> .pagination .page-next </span>{<span style="color: #ff0000"> background-position</span>:<span style="color: #0000ff"> 0px 0px</span>;<span style="color: #ff0000"> padding-right</span>:<span style="color: #0000ff"> 16px</span>;<span style="color: #ff0000"> font-weight</span>:<span style="color: #0000ff">normal</span>;}<span style="color: #800000"> .pagination .page-next_g </span>{<span style="color: #ff0000"> background-position</span>:<span style="color: #0000ff"> -0px -19px</span>;<span style="color: #ff0000"> padding-right</span>:<span style="color: #0000ff"> 16px</span>;<span style="color: #ff0000"> color</span>:<span style="color: #0000ff">#cbcbcb</span>;}<span style="color: #800000"> .pagination .page-cur </span>{<span style="color: #ff0000">background-color</span>:<span style="color: #0000ff"> #f95f9d</span>;<span style="color: #ff0000"> border</span>:<span style="color: #0000ff"> 1px solid #ed3d83</span>;<span style="color: #ff0000">color</span>:<span style="color: #0000ff"> #fff</span>;<span style="color: #ff0000">font-weight</span>:<span style="color: #0000ff"> bold</span>;}<span style="color: #800000"> .pagination .page-break </span>{<span style="color: #ff0000">border</span>:<span style="color: #0000ff"> medium none</span>;<span style="color: #ff0000"> background</span>:<span style="color: #0000ff">none transparent</span>;<span style="color: #ff0000"> color</span>:<span style="color: #0000ff">#333</span>;}<span style="color: #800000"> --> </span>
<span style="color: #008000">//</span><span style="color: #008000">php调用 </span> <span style="color: #800080">$pageNo</span> = <span style="color: #800080">$_GET</span>['pageNo'<span style="color: #000000">]; </span><span style="color: #0000ff">if</span>(<span style="color: #0000ff">empty</span>(<span style="color: #800080">$pageNo</span><span style="color: #000000">)){ </span><span style="color: #800080">$pageNo</span> = 1<span style="color: #000000">; } </span><span style="color: #008000">//</span><span style="color: #008000">分页数据</span> <span style="color: #800080">$pageData</span> = News::getNewsPage(<span style="color: #800080">$pageNo</span>,<span style="color: #800080">$pageSize</span><span style="color: #000000">); </span><span style="color: #008000">//</span><span style="color: #008000">取得总行数</span> <span style="color: #800080">$count</span> = News::<span style="color: #000000">getNewsCount(); </span><span style="color: #008000">//</span><span style="color: #008000">创建分页器</span> <span style="color: #800080">$p</span> = <span style="color: #0000ff">new</span> PageView(<span style="color: #800080">$count</span>['0']['TOTAL'],<span style="color: #800080">$pageSize</span>,<span style="color: #800080">$pageNo</span>,<span style="color: #800080">$pageData</span><span style="color: #000000">); </span><span style="color: #008000">//</span><span style="color: #008000">生成页码</span> <span style="color: #800080">$pageViewString</span> = <span style="color: #800080">$p</span>->echoPageAsDiv();


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Pythonmemperkasakan pemula dalam menyelesaikan masalah.Sintaksnya yang mesra pengguna, perpustakaan luas, dan ciri-ciri seperti pembolehubah, pernyataan bersyarat, dan pembangunan kod yang cekap boleh dilonggarkan. Daripada mengurus data untuk mengawal aliran program dan melaksanakan tugasan berulang, Pythonprovid

Jika anda seorang pembangun PHP yang berpengalaman, anda mungkin merasakan bahawa anda telah berada di sana dan telah melakukannya. Anda telah membangunkan sejumlah besar aplikasi, menyahpenyahpepijat berjuta-juta baris kod dan mengubah suai sekumpulan skrip untuk mencapai op

C ialah pilihan ideal untuk pemula untuk mempelajari pengaturcaraan sistem Ia mengandungi komponen berikut: fail pengepala, fungsi dan fungsi utama. Program C mudah yang boleh mencetak "HelloWorld" memerlukan fail pengepala yang mengandungi pengisytiharan fungsi input/output standard dan menggunakan fungsi printf dalam fungsi utama untuk mencetak. Program C boleh disusun dan dijalankan dengan menggunakan pengkompil GCC. Selepas anda menguasai asas, anda boleh beralih kepada topik seperti jenis data, fungsi, tatasusunan dan pengendalian fail untuk menjadi pengaturcara C yang mahir.
