PHP upload picture class display thumbnail function _php instance

There is a thumbnail feature but it feels incomplete, and there is a problem, continue to learn, in the future modify the next

<form action= "<?php $_server[' php_self ';?>" enctype= "Multipart/form-data" method= "POST" ><input type = "text" name= "name"/><input type= "file" name= "file"/><input type= "Submission" name= ' submit ' value= ' submitted ' >
</form> <?php/** * Created by Phpstorm. * User:administrator * DATE:2016/6/28 * time:21:04/class upload{protected $fileMine;//File upload type protected $filepath;
File upload path protected $filemax//File Upload size protected $fileExt//File upload format protected $filename;//filename protected $fileerror;//File Error setting Protected $fileflag//file detection protected $fileinfo; FILES protected $ext;
File extension protected $path; File Upload public function __construct ($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);
}//Error judgement Public Function Uperror () {if ($this->fileinfo[' ERROR ']>0) {switch ($this->fileinfo[' error ') {Case 1:
$this->fileerror= "Upload file size exceeds the maximum server allowed upload, php.ini set the upload_max_filesize option limit value";
Break
Case 2: $this->fileerror= "The upload file size exceeds the value specified by the hidden field max_file_size option in the HTML form";
Break
Case 3: $this->fileerror= "file part uploaded";
Break
Case 4: $this->fileerror= "did not choose to upload files";
Break
Case 5: $this->fileerror= "No temporary directory found";
Break
Case 6: $this->fileerror= "file write Failed";
Break
Case 7: $this->fileerror= "php file upload extension does not open";
Break
Case 8: $this->fileerror= "";
Break
return false;
return true; }//Detect file Type Public Function Upmine () {if (!in_array ($this->fileinfo[' type '], $this->filemine)) {$this->error= "
File upload type is wrong ";
return false;
return true; //Detect file Format Public Function Upext () {$this->ext=pathinfo ($this->fileinfo[' name '],pathinfo_extension);//var_
Dump ($ext); if (!in_array ($this->ext, $this->fileext)) {$this->fileerror= "incorrect file format"; RetuRN false;
return true; }//Detect file path Public function Uppath () {if (!file_exists ($this->filepath)) {mkdir ($this->filepath,0777,true);}// Detect file Size Public function upsize () {$max = $this->fileinfo[' size '; if ($max > $this->filemax) {$this->fileerror
= "File too large";
return false;
return true; //detects whether the file is HTTP Public function Uppost () {if (!is_uploaded_file ($this->fileinfo[' Tmp_name ')) {$this->fileerror=
"Maliciously repaid";
return false;
return true; }//filename prevents duplicate public function upname () {return MD5 (Uniqid (TRUE), true);}//Picture thumbnail public function smallimg ($x =100 , $y =100) {$imgAtt =getimagesize ($this->path);//image wide, high, type $imgWidth = $imgAtt [0]; $imgHeight = $IMGATT [1]; $imgext =$
IMGATT[2]; Equal-ratio column scaling if (($x/$imgWidth) > ($y/$imgHeight)) {$BL = $y/$imgHeight;} else{$BL = $x/$imgWidth;} $x =floor ($imgWidth * $bl);
$y =floor ($imgHeight * $bl) after zooming;
$images =imagecreatetruecolor ($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, $this->path); //File Dual public Function uploads () {if ($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= "Upload Failed";}} 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 " <! DOCTYPE html>  

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