PHP之图片上传类实例代码(加了缩略图)

有缩略图功能但是感觉不全面，而且有点问题，继续学习，将来以后修改下<formaction="<&

有缩略图功能 但是 感觉不全面，而且有点问题，继续学习，将来以后修改下

<form action="<?php $_SERVER['PHP_SELF']; ?>" enctype="multipart/form-data" method="post" ><input type="text" name="name" /><input type="file" name="file" /><input type="submit" name='submit' value="提交" ></form> 
 
<?php 
/** 
 * Created by PhpStorm. 
 * User: Administrator 
 * Date: 2016/6/28 
 * Time: 21:04 
 */
 
class upload{ 
 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 $filename;//文件名 
 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($filename="file",$filemax=20000000,$filepath="./Uploads",$fileflag=true,$fileExt=array('jpg','exe'),$fileMine=array('image/jpeg')) 
 { 
 $this->filename=$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)){ 
 $this->fileerror="文件格式不对"; 
 return false; 
 } 
 return true; 
 } 
 //检测文件路径 
 public function UpPath(){ 
 if(!file_exists($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($x=100,$y=100){ 
 $imgAtt=getimagesize($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); 
 $big=imagecreatefromjpeg($this->path); 
 imagecopyresized($images,$big,0,0,0,0,$x,$y,$imgWidth,$imgWidth); 
 switch($imgext){ 
 case 1: 
 $imageout=imagecreatefromgif($this->path); 
 break; 
 case 2: 
 $imageout=imagecreatefromjpeg($this->path); 
 break; 
 case 3: 
 $imageout=imagecreatefromgif($this->path); 
 break; 
 } 
 $im=imagejpeg($images,$this->path); 
 
 
 
 
 } 
 
 //文件双传 
 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>"); 
 } 
 } 
 
 
} 
 
 
?>

<?php 
 header("content-type:imagejpeg"); 
header("Content-type:text/html;charset=utf-8"); 
 require 'list.php'; 
 $u=new upload(); 
 $a=$u->uploads(); 
 
 $c=$u->Smallimg(); 
echo "<img src={$a} />"; 
echo "<img src={$c} />"; 
 
?> 

<!DOCTYPE html> 
<html> 
<head> 
<meta charset="utf-8"> 
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> 
<title>Examples</title> 
<meta name="description" content=""> 
<meta name="keywords" content=""> 
<link href="" rel="stylesheet"> 
</head> 
<body> 
 <form action="ce.php" enctype="multipart/form-data" method="post" > 
 <input type="text" name="name" /><input type="file" name="file" /> 
 <input type="submit" name='submit' value="提交" > 
 </form> 
</body> 
</html>

以上这篇PHP之图片上传类实例代码(加了缩略图)就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持脚本之家。