Simple example of uploading and deleting images using PHP

Simple PHP code to upload pictures and delete pictures

Upload pictures:

if (!empty($_FILES["img"]["name"])) { //提取文件域内容名称，并判断 
$path=”uppic/”; //上传路径 
if(!file_exists($path)) 
{ 
//检查是否有该文件夹，如果没有就创建，并给予最高权限 
mkdir(“$path”, 0700); 
}//END IF 
//允许上传的文件格式 
$tp = array(“image/gif”,”image/pjpeg”,”image/jpeg”); 
//检查上传文件是否在允许上传的类型 
if(!in_array($_FILES["img"]["type"],$tp)) 
{ 
echo “<script>alert(‘格式不对&#39;);history.go(-1);</script>”; 
exit; 
}//END IF 
$filetype = $_FILES[&#39;img&#39;][&#39;type&#39;]; 
if($filetype == &#39;image/jpeg&#39;){ 
$type = &#39;.jpg&#39;; 
} 
if ($filetype == &#39;image/jpg&#39;) { 
$type = &#39;.jpg&#39;; 
} 
if ($filetype == &#39;image/pjpeg&#39;) { 
$type = &#39;.jpg&#39;; 
} 
if($filetype == &#39;image/gif&#39;){ 
$type = &#39;.gif&#39;; 
} 
if($_FILES["img"]["name"]) 
{ 
$today=date(“YmdHis”); //获取时间并赋值给变量 
$file2 = $path.$today.$type; //图片的完整路径 
$img = $today.$type; //图片名称 
$flag=1; 
}//END IF 
if($flag) $result=move_uploaded_file($_FILES["img"]["tmp_name"],$file2); 
//特别注意这里传递给move_uploaded_file的第一个参数为上传到服务器上的临时文件 
}//END IF 
//这里再将$img的值写入到数据库中对应的字段

Delete pictures:
unlink("uppic/". $img); //Of course, the value of the variable is read from the database. Deleting pictures in PHP is much simpler than ASP

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