个人易遗忘的代码记录(2)

1.遍历对象object

var props = "";

    for(var p in file){

        if(typeof(file[p])=="function"){

            //obj[p]();

        }else{

            props += p + "=" + file[p] + ";  ";

        }

    }
alert(props);

function array_sort($arr,$keys,$type='asc'){
                $keysvalue = $new_array = array();
                foreach ($arr as $k=>$v){
                         $keysvalue[$k] = $v[$keys];
                }
                if($type == 'asc'){
                   asort($keysvalue);
                }else{
                  arsort($keysvalue);
                }
                reset($keysvalue);
                $i=0;
                foreach ($keysvalue as $k=>$v){
                      $new_array[$i] = $arr[$k];
                      $i++;
                }
                return $new_array;
}

3.数组去除重复，重新排序

for ($i=0;$i<count($rows);$i++){
         $row[]=$rows[$i][0];
           }
 $row=array_unique($row);
while ($value = current($row)){
 $arr[] = $value;
 next($row);
  }
4.            文件时间差
 

<?php

function  time2Units  ( $time )
{
    $year    =  floor ( $time  /  60  /  60  /  24  /  365 );

    $time   -=  $year  *  60  *  60  *  24  *  365 ;

    $month   =  floor ( $time  /  60  /  60  /  24  /  30 );

    $time   -=  $month  *  60  *  60  *  24  *  30 ;

    $week    =  floor ( $time  /  60  /  60  /  24  /  7 );

    $time   -=  $week  *  60  *  60  *  24  *  7 ;

    $day     =  floor ( $time  /  60  /  60  /  24 );

    $time   -=  $day  *  60  *  60  *  24 ;

    $hour    =  floor ( $time  /  60  /  60 );

    $time   -=  $hour  *  60  *  60 ;

    $minute  =  floor ( $time  /  60 );

    $time   -=  $minute  *  60 ;

    $second  =  $time ;

    $elapse  =  '' ;

    $unitArr  = array( '年'   => 'year' ,  '月' => 'month' ,   '周' => 'week' ,  '天' => 'day' ,

                     '小时' => 'hour' ,  '分钟' => 'minute' ,  '秒' => 'second'

                     );
   foreach (  $unitArr  as  $cn  =>  $u  )
   {
       if ( $ $u  >  0  )
       {
            $elapse  = $ $u  .  $cn ;
           break;
       }
   }
   return  $elapse ;
}
function traverse($path = '.') {
                 $current_dir = opendir($path);    //opendir()返回一个目录句柄,失败返回false
      while(($file = readdir($current_dir)) !== false){ //readdir()返回打开目录句柄中的一个条目
                    $sub_dir = $path . DIRECTORY_SEPARATOR . $file;    //构建子目录路径
                     if($file == '.' || $file == '..') {
                         continue;
                     } else if(is_dir($sub_dir)) {    //如果是目录,进行递归
                         echo 'Directory ' . $file . ':<br>';
                         traverse($sub_dir);
                     } else {    //如果是文件,直接输出
                         echo 'File in Directory ' . $path . ': ' . $file . '<br>';
                     }
                 }
                 clearstatcache();
             }
             traverse('../images/temp/');
         ?>

删除修改时间两周以上文件：

<?php
   function traverse($path = '.') {
            $n=0;
            $current_dir = opendir($path);    //opendir()返回一个目录句柄,失败返回false
            while(($file = readdir($current_dir)) !== false) {    //readdir()返回打开目录句柄中的一个条目
            $sub_dir = $path . DIRECTORY_SEPARATOR . $file;    //构建子目录路径
            if($file == '.' || $file == '..') {
                continue;
            } else if(is_dir($sub_dir)) {    //如果是目录,进行递归
                echo 'Directory ' . $file . ':<br>';
                traverse($sub_dir);
             } else {
 //如果是文件,直接输出
                     //if(filemtime($file)-time()>2000000)//20120317000000
                         //echo 'File in Directory ' . $path . ': ' . $file . '<br>';
              $times=time()-filemtime($path.'/'.$file);
              if(floor ( $times  /  60  /  60  /  24  /  7 )>=2 && $file!='index.html'){
               unlink($path.'/'.$file);
               $n++;
                 }
                 }
                 }
                 echo "共删除".$n.'个文件';
                 clearstatcache();
             }
             traverse('../images/temp/');
         ?>