以前写过一个MVC框架，封装的有点low，经过一段时间的沉淀，打算重新改造下，之前这篇文章封装过一个验证码类。
这次重新改造MVC有几个很大的收获
>全部代码都是用Ubuntu+Vim编写，以前都是windows上开发，这次彻底迷上Ubuntu Linux
>裸装php，用php自带的服务器解释执行php，缺哪个扩展就装哪个，最后通过整个MVC框架的开发，把Lamp所有的常用配置与细节搞懂
>通过扩展安装，学习扩展开发与php底层源码分析
总之，终于感觉层次又提升了不少。
分页类代码：
?1 <?php ?2 ??????3 class Page { ?4 ????//每页显示的条目 ?5 ????protected $pageSize; ?????6 ????//总记录数 ?7 ????protected $totalRecord; ?8 ????//当前页 ?9 ????protected $p; 10 ????//总页数 11 ????protected $totalPage; 12 ????protected $url; 13 ?14 ????public function __construct( $_pageSize, $_totalRecord ){ 15 ????????$this->pageSize = $_pageSize; 16 ????????$this->totalRecord = $_totalRecord; ????????17 ????????$this->totalPage = ceil( $this->totalRecord / $this->pageSize ); 18 ????????$this->p = $this->getCurPage(); 19 ????????$this->url = $this->getUrl(); 20 ????} 21 ?22 ????public function setUrl( $p ){ 23 ????????if( strstr( $this->url, ‘?‘ ) ) { 24 ????????????//url中有参数 25 ????????????$url = $this->url . ‘&p=‘ . $p; 26 ????????}else { 27 ????????????//url中没有参数 28 ????????????$url = $this->url . ‘?p=‘ . $p; 29 ????????} 30 ????????return $url; 31 ????} 32 ?33 ????//首页 34 ????public function firstPage(){ 35 ????????return $this->setUrl( 1 ); 36 ????} 37 ?38 ????//末页 39 ????public function lastPage(){ 40 ????????return $this->setUrl( $this->totalPage ); 41 ????} 42 ?43 ????//上一页 44 ????public function prevPage(){ 45 ????????if( $this->p - 1 <= 0 ) { 46 ????????????$prevPage = $this->p; 47 ????????}else { 48 ????????????$prevPage = $this->p - 1; 49 ????????} 50 ????????return $this->setUrl( $prevPage ); 51 ????} 52 ?53 ????//下一页 54 ????public function nextPage(){ 55 ????????if( $this->p + 1 > $this->totalPage ) { 56 ????????????$nextPage = $this->p; 57 ????????}else { 58 ????????????$nextPage = $this->p + 1; 59 ????????} 60 ????????return $this->setUrl( $nextPage ); 61 ????} 62 ?63 ????//得到当前的页码 64 ????public function getCurPage(){ 65 ????????$curPage = intval( $_GET[‘p‘] ); 66 ????????if ( empty( $curPage ) ) { 67 ????????????$curPage = 1; 68 ????????}else if ( $curPage > $this->totalPage ) { 69 ????????????$curPage = $this->totalPage; 70 ????????}else if ( $curPage < 0 ){ 71 ????????????$curPage = 1; 72 ????????} 73 ????????return $curPage; 74 ????} 75 ?76 ????//拼接url 77 ????public function getUrl(){ 78 ????????$protocol = strtolower( array_shift( explode( ‘/‘, $_SERVER[‘SERVER_PROTOCOL‘] ) ) ); 79 ????????$host = $_SERVER[‘SERVER_NAME‘]; 80 ????????$port = $_SERVER[‘SERVER_PORT‘]; 81 ????????$uri = $_SERVER[‘REQUEST_URI‘]; 82 ????????$uriArr = parse_url( $uri ); 83 ????????$path = $uriArr[‘path‘]; 84 ????????if( !empty( $uriArr[‘query‘] ) ) { 85 ????????????//url中的query字符转数组 86 ????????????parse_str( $uriArr[‘query‘], $args ); 87 ????????????//清除原来的分页参数p 88 ????????????if( isset( $args[‘p‘] ) ){ 89 ????????????????unset( $args[‘p‘] ); 90 ????????????} 91 ????????????//参数重新拼接成字符串 92 ????????????$queryString = http_build_query( $args ); 93 ????????????//字符串如果不止一个p参数,把那些参数拼接在path的后面 94 ????????????if ( !empty( $queryString ) ){ 95 ????????????????$path .= ‘?‘ . $queryString; 96 ????????????} 97 ????????} 98 ????????return $protocol . ‘://‘ . $host . ‘:‘ . $port . $path; 99 ????}100 101 ????public function render(){102 ????????return [103 ????????????‘first‘ => $this->firstPage(),104 ????????????‘last‘ => $this->lastPage(),105 ????????????‘prev‘ => $this->prevPage(),106 ????????????‘next‘ => $this->nextPage()107 ????????];108 ????}109 110 ????public function limit(){111 ????????$offset = ( $this->p - 1 ) * $this->pageSize;112 ????????return $offset . ‘,‘ . $this->pageSize;113 ????}114 }115 116 $page = new Page( 5, 11 );117 //echo $page->getCurPage();118 //echo $page->getUrl();119 print_r( $page->render() );120 121 ?>自定义MVC框架之工具类-分页类的封装
原文地址：https://www.cnblogs.com/ghostwu/p/8476292.html