接解决上传文件失败后，网上找了一段不错的（比较全面且严谨）PHP后台实现文件处理的代码，并解决原来代码中两个错误后记录如下：
需要修改的字段有$filename,$filemax,$filepath，其余基本不需要再做修改了
<?php
class upload{
protected $filename;//文件名
protected $fileMine;//文件上传类型
protected $filepath;//文件上传路径
protected $filemax;//文件上传大小
protected $fileExt;//文件上传格式
protected $fileerror;//文件出错设置
protected $fileflag;//文件检测
protected $fileinfo; //FILES
protected $ext; //文件扩展
protected $path;
//文件上传
public function __construct($filename="N_File",$filemax=5000000,$filepath="Notices",$fileflag=true,$fileExt=array('gif','jpeg','pjpeg','jpg','png'),$fileMine=array('image/gif','image/jpeg','image/pjpeg','image/jpg','image/png'))
{
$this->filename=$filename;
$this->fileinfo=$_FILES[$this->filename];
$this->filemax=$filemax;
$this->filepath=$filepath;
$this->fileflag=$fileflag;
$this->fileExt=$fileExt;
$this->fileMine=$fileMine;
//var_dump($this->filename);
}
//错误判断
public function UpError(){
if($this->fileinfo['error']>0){
switch($this->fileinfo['error'])
{
case 1:
$this->fileerror="上传文件大小超过服务器允许上传的最大值，php.ini中设置upload_max_filesize选项限制的值 ";
break;
case 2:
$this->fileerror="上传文件大小超过HTML表单中隐藏域MAX_FILE_SIZE选项指定的值";
break;
case 3:
$this->fileerror="文件部分被上传";
break;
case 4:
$this->fileerror="没有选择上传文件";
break;
case 5:
$this->fileerror="未找到临时目录";
break;
case 6:
$this->fileerror="文件写入失败";
break;
case 7:
$this->fileerror="php文件上传扩展没有打开";
break;
case 8:
$this->fileerror="";
break;
}
return false;
}
return true;
}
//检测文件类型
public function UpMine(){
if(!in_array($this->fileinfo['type'],$this->fileMine)) {
$this->error="文件上传类型不对";
return false;
}
return true;
}
//检测文件格式
public function UpExt(){
$this->ext=pathinfo($this->fileinfo['name'],PATHINFO_EXTENSION);
//var_dump($ext);
if(!in_array($this->ext,$this->fileExt)){
$this->fileerror="文件格式不对";
return false;
}
return true;
}
//检测文件路径
public function UpPath(){
$mtime=date('Y-m-d');
$this->filepath=$this->filepath.'/'.$mtime;
if(!file_exists($this->filepath)){
mkdir($this->filepath,0777,true);
}
}
//检测文件大小
public function UpSize(){
$max=$this->fileinfo['size'];
if($max>$this->filemax){
$this->fileerror="文件过大";
return false;
}
return true;
}
//检测文件是否HTTP
public function UpPost(){
if(!is_uploaded_file($this->fileinfo['tmp_name'])){
$this->fileerror="恶意上偿还";
return false;
}
return true;
}
//文件名防止重复
public function Upname(){
return md5(uniqid(microtime(true),true));
}
//图片缩略图
public function Smallimg($x=300,$y=300){
$imgAtt=getimagesize($this->path);
//图像宽，高，类型
$imgWidth=$imgAtt[0];
$imgHeight=$imgAtt[1];
$imgext=$imgAtt[2];
//等比列缩放
if(($x/$imgWidth)>($y/$imgHeight)){
$bl=$y/$imgHeight;
}else{
$bl=$x/$imgWidth;
}
$x=floor($imgWidth*$bl); //缩放后
$y=floor($imgHeight*$bl);
$images=imagecreatetruecolor($x,$y);
switch($imgext){
case 1:
$imageout=imagecreatefromgif($this->path);
break;
case 2:
$imageout=imagecreatefromjpeg($this->path);
break;
case 3:
$imageout=imagecreatefrompng($this->path);
break;
default:
$imageout=imagecreatefromjpeg($this->path);
}
imagecopyresized($images,$imageout,0,0,0,0,$x,$y,$imgWidth,$imgHeight);
$names=$this->Upname();
$this->path=$this->filepath.'/'. $names.'.'.$this->ext;
imagejpeg($images,$this->path);
return $this->path;
}
//文件上传
public function uploads()
{
if($this->UpError()&&$this->UpMine()&&$this->UpExt()&&$this->UpSize()&&$this->UpPost()){
$this->UpPath();
$names=$this->Upname();
$this->path=$this->filepath.'/'. $names.'.'.$this->ext;
if(move_uploaded_file($this->fileinfo['tmp_name'], $this->path)){
return $this->path;
}else{
$this->fileerror="上传失败";
}
}else{
exit("<b>".$this->fileerror."</b>");
}
}
}
?>
调用很简单，在文件上传检查的PHP页面加入：
$u=new upload();
$a=$u->uploads();
$c=$u->Smallimg();
echo "<a href='$a'><img src='$c' /></a>"
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