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
PHP;">
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,$x,$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{
$this->fileerror="上传失败";
}
}else{
exit("".$this->fileerror."");
}
}
}
uploads();
$c=$u->Smallimg();
echo "
";
echo "
";
?>
<Meta charset="utf-8">
<Meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
Examples
<Meta name="description" content="">
<Meta name="keywords" content="">
以上所述是小编给大家介绍的PHP上传图片类显示缩略图功能的相关知识。编程之家 jb51.cc 收集整理的教程希望能对你有所帮助，如果觉得编程之家不错，可分享给好友！感谢支持。
