PHP通用分页类(支持php,ajax,html) v1.1.20100329修正版

<?php/** * 通用分页类 * Author:Zero QQ:93133 * ver 1.2.20120519 修正版 */class pagination{ private $pstyle=array(); private static $url=array(); public $arg=array(); public $cfg=array(  'text'=>array('首页','上一页','下一页','尾页'),  'pagesize'=>20,  //htmltpl=> "list{\$page}.shtml",  'listtpl'=>'[{$page}]',//仿搜索引擎页模板  'tpl'=>array('t','条','l','s'),  //默认调用方式  //  total=>0  记录总数  //'attachtotal'=>false  ); public $totalpage;  //总页数  function __construct(array $cfg){  is_numeric($cfg['total'])&&$cfg['total']>=0 or exit('必须传入有效记录数');  if(!is_numeric($cfg['pagesize'])||$cfg['pagesize']<=0) unset($cfg['pagesize']);  $this->cfg=array_merge($this->cfg,$cfg);    //计算分页总数  $this->totalpage=ceil($this->cfg['total']/$this->cfg['pagesize']);  if($this->cfg['page']){  //传入当前页 适合html,ajax 需同时传入cfg[htmltpl]才起作用   $this->arg['page']=$this->cfg['page'];  }  else{   //分析URL中的当前页   //2011-5-29修改分析方法，以兼容URL重写后的地址   self::$url or self::$url=parse_url($_SERVER['REQUEST_URI']);   parse_str($this->cfg['arg']?$this->cfg['arg']:self::$url['query'],$this->arg);      $this->arg['page']=is_numeric($this->arg['page'])&&$this->arg['page']<=$this->totalpage?abs(ceil($this->arg['page'])):1;  }  //客户端缓存记录总数  ($this->cfg['total']>8000||$this->totalpage>400)&&!isset($this->cfg['attachtotal']) and $this->cfg['attachtotal']=true;    $this->cfg['attachtotal']&&!self::totalcache() and self::totalcache($this->cfg['total']);   }  public static function totalcache($total=null,$cachetime=3600){  self::$url or self::$url=parse_url($_SERVER['REQUEST_URI']);  $urlparts=self::$url;  parse_str($urlparts['query'],$urlparts['query']);  unset($urlparts['query']['page'],$urlparts['query']['ajax']);  //header('sdfsdf:'.serialize($urlparts));  $key='_total_'.md5(serialize($urlparts));  if($total!=null){ //设置缓存   setcookie($key,$total,$_SERVER['REQUEST_TIME']+$cachetime);  }  else{ //获取缓存   return $_COOKIE[$key];  } }  /**  * 创建翻页链接  *  * @param int $page 页数  * @return string 链接字符串  *  */  private function buildurl($page){  if(!is_numeric($page)){ //javascript select控件翻页   $arg=$this->arg;   $arg['page']='{page}';   $url= '\'?'.http_build_query($arg)."'.replace(escape('{page}'),$page)";  }  elseif(is_numeric($this->arg['page'])&&$this->cfg['htmltpl']){ //静态翻页      $url=str_replace('{$page}',$page==1?null:$page,$this->cfg['htmltpl']);  }  else{ //PHP翻页   $arg=$this->arg;   $arg['page']=$page;         if($this->cfg['ajax']){    if(isset($_SERVER['HTTP_X_REQUESTED_WITH'])){  //ajax翻页     $onclick="\" onclick=\"{$this->cfg['ajax']}.call(this,$page);return false";     $path=self::$url['path'];    }    else{     unset($arg['ajax']);    }   }   $query= '?'.http_build_query($arg);   $url=$path.$query.$onclick;  }  return $url;  }  /**  * 文本输入框样式  *  */  private function i(){  $this->pstyle[]='跳转<input type="text" title="输入页数，按回车跳转" style="width:30px;text-align:center" onkeydown="javascript:if(event.keyCode==13){'.($this->cfg['ajax']?$this->buildurl('this.value'):"location.href={$this->buildurl('this.value')};return false;}").'" />页'; }  /**  * 下拉列表  *  */  private function s(){  if($this->totalpage>300) return $this->i(); //大于300页，用输入方式代替  $str='<select size="1" onchange="'.($this->cfg['ajax']?$this->buildurl('this.value'):"location.href={$this->buildurl('this.value')}").'">';  for($i=1;$i<=$this->totalpage;$i++){   $str.="<option value='$i'".($this->arg['page']==$i?' selected':null).">第{$i}页</option>";  }  $str.="</select>";  $this->pstyle[]=$str; }  /**  * 首页样式  *  */  private function f($show=true){  $this->pstyle[]=$this->arg['page']==1&&$show? $this->cfg['text'][0]:"<a href=\"{$this->buildurl(1)}\">{$this->cfg['text'][0]}</a>"; }  /**  * 尾页样式  *  */  private function e($show=true){  $this->pstyle[]=$this->arg['page']==$this->totalpage&&$show? $this->cfg['text'][3]:"<a href=\"{$this->buildurl($this->totalpage)}\">{$this->cfg['text'][3]}</a>";   }  /**  * 上一页样式  *  */  private function p($show=true){  $this->pstyle[]=$this->arg['page']<2&&$show? $this->cfg['text'][1]:"<a href=\"{$this->buildurl($this->arg['page']-1)}\">{$this->cfg[text][1]}</a>"; }  /**  * 下一页样式  *  */  private function n($show=true){  $this->pstyle[]=$this->arg['page']>=$this->totalpage&&$show? $this->cfg['text'][2]:"<a href=\"{$this->buildurl($this->arg['page']+1)}\">{$this->cfg['text'][2]}</a>"; }    /**  * 搜索引擎分页  *  * @param int $limit 最大左右偏移量之和  * @param int $lstyle 样式  * @return string 样式字符串  *  */ private function l($limit=7,$lstyle=1){  $a=floor($limit/2);  //左右偏移量  $l=$this->arg['page']-$a;$r=$this->arg['page']+$a;  //默认偏移量  $l<$a-1&&$r+=1-$l;//如果左不足    if($r>$this->totalpage){//如果右不足   $l-=$r-$this->totalpage;   $r=$this->totalpage;  }  $l<1&&$l=1;  //输出  switch ($lstyle){   case '0':    for($i=$l;$i<=$r;$i++){     $output.=' '.($this->arg['page']==$i? str_replace('{$page}',$i,$this->cfg['listtpl']):"<a href=\"{$this->buildurl($i)}\">".str_replace('{$page}',$i,$this->cfg['listtpl'])."</a>").' ';    }    break;   case '1':    $l>1&&$output="<a href=\"{$this->buildurl(1)}\">".str_replace('{$page}',1,$this->cfg['listtpl'])."</a>";    $l>2&&$output.='...';    for($i=$l;$i<=$r;$i++){     $output.=' '.($this->arg['page']==$i? "<strong>$i</strong>":"<a href=\"{$this->buildurl($i)}\">".str_replace('{$page}',$i,$this->cfg['listtpl'])."</a>").' ';    }    $r<$this->totalpage-1&&$output.='...';    $r<=$this->totalpage-1&&$output.="<a href=\"{$this->buildurl($this->totalpage)}\">".str_replace('{$page}',$this->totalpage,$this->cfg['listtpl'])."</a>";  }  $this->pstyle[]=$output; } /**  * 取得记录总数  *  */ private function t(){  $this->pstyle[]=$this->cfg['total']; } /**  * 取得总页数  *  */ private function tp(){  $this->pstyle[]=$this->totalpage; }  /**  * 创建完整分页样式  *  * @param string $space 各部分合并间隔符号  * @return string 完整分页字符串  *  */ public function create($space=' '){  foreach($this->cfg['tpl'] as $arg){   if(is_array($arg)){    if(method_exists($this,$func=array_shift($arg))){     call_user_func_array(array($this,$func),$arg);    }    else{     $this->pstyle[]=$func;    }   }   else{    if(method_exists($this,$arg)){     call_user_func(array($this,$arg));    }    else{     $this->pstyle[]=$arg;    }   }     }  return implode($space,$this->pstyle); } }/*调用方法:例1:默认调用$pageination=new pagination(array(total=>200));   //必选参数totalecho $pageination->create();例2:设置更多参数$pageination=new pagination(array(total=>200,pagesize=>30,text=>array(|<,<,>,>|),tpl=>array(t,'条/',tp,'页',l,s)));   //必选参数total,tpl内数组对应类中的函数名,如果函数不存在则按顺序原样显示出来echo $pageination->create();例3:复杂调用$pageination=new pagination(array(total=>200,pagesize=>30,text=>array(|<,<,>,>|),tpl=>array(t,'条/',tp,'页',array(l,9,0),s)));  echo $pageination->create();例4:ajax 调用$pageination=new pagination(array(total=>200,ajax=>'loadlist')); //将在页的链接上使用javascript loadlist函数 带有一个参数是页数 即调用如 loadlist(5).echo $pageination->create();例5:静态页调用$pageination=new pagination(array(total=>200,page=>1,htmltpl=>'list{$page}.shtml')); //将生成模板格式静态分页 $pageination->arg[page]=n 来改变当前页echo $pageination->create();注:以上方法除了PHP翻页(默认)方式,其他方式均未测试,有问题欢迎与我联系,大家一起探讨完善*/?>