php简单实用生成缩略图代码

date_default_timezone_set('prc');
/**
* 求取从某日起经过一定天数后的日期,
* 排除周六周日和节假日
* @param $start       开始日期
* @param $offset      经过天数
* @param $exception 例外的节假日
* @param $allow       允许的日期(预留参数)
* @return
*  examples:输入(2010-06-25,5,''),得到2010-07-02
*/
function getendday( $start='now', $offset=0, $exception='', $allow='' ){
    //先计算不排除周六周日及节假日的结果
    $starttime = strtotime($start);
    $endtime = $starttime + $offset * 24 * 3600;
    $end = date('y-m-d', $endtime);
    //然后计算周六周日引起的偏移
    $weekday = date('n', $starttime);//得到星期值：1-7
    $remain = $offset % 7;
    $newoffset = 2 * ($offset - $remain) / 7;//每一周需重新计算两天
    if( $remain > 0 ){//周余凑整
        $tmp = $weekday + $remain;
        if( $tmp >= 7 ){
            $newoffset += 2;
        }else if( $tmp == 6 ){
            $newoffset += 1;
        }
        //考虑当前为周六周日的情况
        if( $weekday == 6 ){
            $newoffset -= 1;
        }else if( $weekday == 7 ){
            $newoffset -= 2;
        }
    }
    //再计算节假日引起的偏移
    if( is_array($exception) ){//多个节假日
        foreach ($exception as $day){
            $tmp_time = strtotime($day);
            if( $tmp_time>$starttime && $tmp_time<=$endtime ){//在范围(a,b]内
                $weekday_t = date('n', $tmp_time);
                if($weekday_t <= 5){//防止节假日与周末重复
                    $newoffset += 1;
                }
            }
        }
    }else{//单个节假日
        if( $exception!='' ){
            $tmp_time = strtotime($exception);
            if( $tmp_time>$starttime && $tmp_time<=$endtime ){
                $weekday_t = date('n', $tmp_time);
                if($weekday_t <= 5){
                    $newoffset += 1;
                }
            }
        }
       
    }
    //根据偏移天数，递归做等价运算111cn.net
    if($newoffset > 0){
        #echo "[{$start} -> {$offset}] = [{$end} -> {$newoffset}]"."<br /> ";
        return getendday($end,$newoffset,$exception,$allow);
    }else{
        return $end;
    }
}
/**
* 暴力循环方法
*/
function getendday2( $start='now', $offset=0, $exception='', $allow='' ){
    $starttime = strtotime($start);
    $tmptime = $starttime + 24*3600;
   
    while( $offset > 0 ){
        $weekday = date('n', $tmptime);
        $tmpday = date('y-m-d', $tmptime);
        $bfd = false;//是否节假日
        if(is_array($exception)){
            $bfd = in_array($tmpday,$exception);
        }else{
            $bfd = ($exception==$tmpday);
        }
        if( $weekday<=5 && !$bfd){//不是周末和节假日
            $offset--;
            #echo "tmpday={$tmpday}"."<br />";
        }
        $tmptime += 24*3600;
    }
   
    return $tmpday;
}
$exception = array(
    '2010-01-01','2010-01-02','2010-01-03',
    '2010-04-03','2010-04-04','2010-04-05',
    '2010-05-01','2010-05-02','2010-05-03',
    '2010-06-14','2010-06-15','2010-06-16',
    '2010-09-22','2010-09-23','2010-09-24',
    '2010-10-01','2010-10-02','2010-10-03','2010-10-04',
    '2010-10-05','2010-10-06','2010-10-07',
   
);
//echo getendday('2010-08-27',3,'');
//echo getendday('2010-06-25',15,'2010-07-07');
$t1 = microtime();
echo getendday('2010-05-12',66,$exception)."<br />";
$t2 = microtime();echo "use ".($t2-$t1)." s <br />";
echo getendday2('2010-05-12',66,$exception)."<br />";
$t3 = microtime();echo "use ".($t3-$t2)." s <br />";

<?php教程
if($_files['file']){
 // ----------------------------------------------------------------------------------------------//
//
// 说明：文件上传   日期：2004-5-2
//
// ----------------------------------------------------------------------------------------------//

php简单实用文件上传代码
 // 上传设置
 $maxsize=10002400;            //最大允许上传的文件大小
 $alltype=array(".php",".php3");         //所有允许上传的文件类型
 $imgtype=array(".php",".php3");               //类型

 // 判断文件大小
 if($_files['file']['size']>$maxsize)  {
     echo "您上传的资料大于10000k";
     exit;
 }
 
 // 判断文件类型
 $type=strstr($_files['file']['name'],".");
 if(in_array($type,$alltype)){
     echo "不允许上传该类型的文件";
     exit;
 }
 include './uploaddir.php';
 $time=date("ymd-his",time());
 $fn=$time.$type;
 $destination=$updir."/".$fn;
 if(@move_uploaded_file($_files['file']['tmp_name'], $destination)){
         @chmod($destination, 0777);
   $fileurl=$updir."/".$destination;
         $fileurl="".$destination;
          
 }else{
    echo "上传失败!";
    echo "<script>location.href=history.back()</script>";
 }
// ----------------------------------------------------------------------------------------------//
}
if($back=="no"):
 echo "ok";
 exit;
endif;
?>

<?php教程

 $dbhost = 'localhost';    // 数据库教程服务器
 $dbuser = 'root';     // 数据库用户名
 $dbpw = 'qwaszx';             // 数据库密码
 $dbname = 'movie';  // 数据库名
 $adminemail = www.111cn.net@111cn.net; // 系统管理员 email

    $database = 'mysql教程';  // 不能修改此处
 $tplrefresh = 1;  // 模板自动刷新开关 0=关闭, 1=打开
 $pconnect = 0;   // 数据库连接方式 0=connect, 1=pconnect

// ============================================================================

class db_class {
 var $querynum = 0;
 //function dbstuff() { global $fp; $fp = fopen("./tempdata/dblog.txt", "w"); }

 function connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect = 0) {
  if($pconnect) {
   if(!@mysql_pconnect($dbhost, $dbuser, $dbpw)) {
    $this->halt('can not connect to mysql server');
   }
  } else {
   if(!@mysql_connect($dbhost, $dbuser, $dbpw)) {
    $this->halt('can not connect to mysql server');
   }
  }
  mysql_query("set names 'gb2312'");
 }

 function select_db($dbname) {
  return mysql_select_db($dbname);
 }

 function fetch_array($query, $result_type = mysql_assoc){

  $query = mysql_fetch_array($query, $result_type);

  return $query;
 }

 function query($sql, $silence = 0) {
  //echo "|$sql|<br>"; //debug
  //@fwrite($globals[fp], $sql." "); //debug
  $query = mysql_query($sql);
        //echo 'query:'.$query.'<br>';
     if(!$query && !$silence)
        {
         $this->halt('mysql query error', $sql);
  }
        $this->querynum++;
  return $query;
 }

<?php教程
$bbsconn=mysql教程_connect("localhost","root","");
mysql_select_db("lsmsql",$bbsconn);
$kind="幻灯片";
$sql="select * from sa_article where kind='$kind' order by articleid desc limit 0,6";
$result=mysql_query($sql);
$pics=$links=$texts="";
    while ($rows=mysql_fetch_array($result)){

  $pics.="/attached/".$rows['source']."|";

  $links.="show.php?id=".$rows['articleid']."|";

  $texts.=$rows['title']."|";

}
$pics=substr($pics,0,-1);

$links=substr($links,0,-1);

$texts=substr($texts,0,-1);
?>

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<title>幻灯片</title>
</head>
<body>
<table width="300" border="1">
  <tr>
    <td>
<script type=text/网页特效>
<!--

var focus_width=300;
var focus_height=200;
var text_height=20;
var swf_height = focus_height+text_height
var pics="<?=$pics?>"
var links="<?=$links?>"
var texts="<?=$texts?>"
document.write('<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" width="'+ focus_width +'" height="'+ swf_height +'">');
document.write('<param name="allowscriptaccess" value="samedomain"><param name="movie" value="playswf.swf"><param name=wmode value=transparent><param name="quality" value="high">');
document.write('<param name="menu" value="false"><param name=wmode value="opaque">');
document.write('<param name="flashvars" value="pics='+pics+'&links='+links+'&texts='+texts+'&borderwidth='+focus_width+'&borderheight='+focus_height+'&textheight='+text_height+'">');
document.write('<embed src="playswf.swf" wmode="opaque" flashvars="pics='+pics+'&links='+links+'&texts='+texts+'&borderwidth='+focus_width+'&borderheight='+focus_height+'&textheight='+text_height+'" menu="false" bgcolor="#dadada" quality="high" width="'+ focus_width +'" height="'+ swf_height +'" allowscriptaccess="samedomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />');  document.write('</object>');
//-->
</script>

    </td>
  </tr>
</table>
</body>
</html>