php 完美的批量生成缩略图代码

php教程完美的批量生成缩略图代码
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<TITLE>生成缩略图</TITLE>
</HEAD>
<BODY>
<?php
$c = array('dir'=>'./images','newdir'=>'./thumb','w'=>'200','h'=>'200');
//只处理文件名中含有small的文件,如果处理所有文件,请设置为 '.'
$only = '.';

//如果不希望覆盖已经存在的图片将此行设为0;
$over = 1;

//是否处理GIF图,0为不处理
$regif = 1;

if($_GET['do']=='start'){
$file = array();
$dir = $_POST['dir'];
$newdir = $_POST['newdir'];
$w = intval($_POST['w']);
$h = intval($_POST['h']);
$d = @dir($dir) or die('目录不存在!');
$config = "<?phpnreturn array('dir'=>'".$dir."','newdir'=>'".$newdir."','w'=>'".$w."','h'=>'".$h."');n?>";
savefile($c, $config);
while ($a=$d->read()){
  $type = substr(strrchr($a,"."),1);
  if($a!=='.' && $a!=='..'){
   if(is_dir($dir.'/'.$a)){
    $zdir[]=$a;
   } elseif($type=='jpg' || $type=='gif' || $type=='bmp' || $type=='png') {
    if(strstr($a, $only)){
     $file[]=$dir.'/'.$a;
    }
   }
  }
}
$rand = rand(100,999);
$img = new image($dir, $newdir);
$img->over = $over;
$img->regif= $regif;
echo "<div style='width:800px'>";
foreach ($file as $key){
  $src = $img->reImg($key, $w, $h);
  echo "<div style='float:left;border:#666666 1px dotted; width:$w px; height:$h px; padding: 5px; margin:5px;'><img src=$src?$rand></div>";
}
echo "</div>";
die("<br><br><label> <input name="go" type="button" id="go" onClick="location='index.php'" value=" www.zzzyk.com继续处理新的图片 "></label><br><br>");
}
?>
<div style="clear:both; width:250px; height:110px; border:#006633 1px dashed; padding:5px; font-size:12px; color:#009933">
<form name="form1" method="post" action="?do=start">
   <label>源目录:
   <input name="dir" type="text" id="dir" value="<?=$c['dir']?>">
</label>
<br><br>
<label>保存到:
<input name="newdir" type="text" id="newdir" value="<?=$c['newdir']?>">
</label>
<br><br>
<label>宽高:
<input name="w" type="text" id="w" value="<?=$c['w']?>" size="7" maxlength="3">
X
<input name="h" type="text" id="h" value="<?=$c['h']?>" size="7" maxlength="3">
</label>
<br>
<br>
   <label>
   <input type="submit" name="search" id="search" value="生成">
   </label>
</form>

</div>
©2008 <a href="http://www.zzzyk.com" target=_blank>wbsifan</a>
</BODY>
</HTML>
<?
<?php
//创建目录(目录, ［模式］)
function mkdirs($l1, $l2 = 0777){
if(!is_dir($l1)){
  //如果目录不存在,递归建立
  mkdirs(dirname($l1), $l2);
  return @mkdir($l1, $l2);
}
return true;
}

//保存文件(文件, ［内容］)
function savefile($l1, $l2=''){
if(function_exists(file_put_contents)){
  file_put_contents($l1, $l2);
} else{
  $fp = @fopen($l1, 'wb');
  @fwrite($fp, $l2);
  fclose($fp);
}
}

//获取文件后缀(文件)
function getfix($l1){
return end(explode('.', $l1));
}

//是否为允许类型(当前, 允许)
function checkfix($l1, $l2){
if(!is_array($l2)){
$l2 = explode(',', str_replace(' ', '', $l2));
}
return in_array($l1, $l2) ? 1 : 0;
}

class image{
//源地址
var $src;
//新图路径(本地化后)
var $newsrc;

//允许的图类型
var $allowtype = array('.jpg','.gif','.png','.jpeg');
//是否缩略GIF, 为0不处理
var $regif   = 0;
//是否保留源文件(1为保留, 0为MD5)
var $keep = 0;
//是否可以覆盖已存在的图片,为0则不可覆盖
var $over = 0;

//图片源目录
var $dir;
//处理后的目录
var $newdir;

补充：Php教程,Php常用代码