PHP image upload code_PHP tutorial

(The code snippet test was successful and successfully uploaded!)
Because yesterday I remembered that the urge to learn PHP code came from imitating something similar to the company's IMAGE LIBRARY. Therefore, after the most basic functions were implemented today and I gained a conceptual understanding of PHP, I naturally thought of an important function that needs to be implemented urgently, which is the uploading of pictures.
So I started searching the Internet and found a code snippet consisting of three pages in someone's blog, so I copied it and studied it, but the result was that I couldn't debug it. I thought it was a problem with the company's computers entering the domain, but after some attempts, I decided to let it go for the time being. Go home and try it (because the computer at home is prepared in the purest environment).
After I got home, I copied the code and tried it, but it still didn’t work, with the same error message. Very decisively, I planned to find another way and find another code snippet. Ha, it went very smoothly. I found a code snippet of only one page and succeeded in one try. CHEERS!
------------The following code is reprinted, post it and share it with everyone--------

Copy codeThe code is as follows:

$uptypes=array('image/jpg', //Upload file type list
'image/jpeg',
'image/png',
'image/pjpeg',
'image/gif',
'image/bmp',
'image/x-png');
$max_file_size=5000000; //Upload file size Limit, unit BYTE
$destination_folder="upload/"; //Upload file path
$watermark=1; //Whether to attach a watermark (1 means adding watermark, others means not adding watermark);
$ watertype=1; //Watermark type (1 is text, 2 is picture)
$waterposition=1; //Watermark position (1 is the lower left corner, 2 is the lower right corner, 3 is the upper left corner, 4 is the upper right corner, 5 is centered);
$waterstring="newphp.site.cz"; //Watermark string
$waterimg="xplore.gif"; //Watermark image
$imgpreview=1; // Whether to generate a preview image (1 means generate, others do not generate);
$imgpreviewsize=1/2; //Thumbnail ratio
?>




body,td{font-family:tahoma,verdana,arial;font-size:11px;line-height:15px;background-color:white;color:#666666;margin-left :20px;}
strong{font-size:12px;}
aink{color:#0066CC;}
a:hover{color:#FF6600;}
aisited{color:#003366; }
a:active{color:#9DCC00;}
table.itable{}
td.irows{height:20px;background:url("index.php?i=dots" repeat-x bottom }

Upload file:








The file types allowed to be uploaded are: jpg|jpeg|png|pjpeg| gif|bmp|x-png|swf


return

< ;?php
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
if (!is_uploaded_file($_FILES["upfile"][tmp_name]))
// Does the file exist?
{
echo "The file does not exist! ";
exit;
}
$file = $_FILES["upfile"];
if($max_file_size //Check file size
{
echo "The file is too big! ";
exit;
}
if(!in_array($file["type"], $uptypes))
//Check file type
{
echo "Only image files or Flash can be uploaded! ";
exit;
}
if(!file_exists($destination_folder))
mkdir($destination_folder);
$filename=$file["tmp_name"] ;
$image_size = getimagesize($filename);
$pinfo=pathinfo($file["name"]);
$ftype=$pinfo[extension];
$destination = $destination_folder .time().".".$ftype;
if (file_exists($destination) && $overwrite != true)
{
echo "File with the same name Already exists! ";
exit;
}
if(!move_uploaded_file ($filename, $destination))
{
echo " Error moving file! ";
exit;
}
$pinfo=pathinfo($destination);
$fname=$pinfo[basename];
echo " Uploaded successfully
File name: ".$destination_folder.$fname."
";
echo " width :".$image_size[0];
echo " Length:".$image_size[1];
if($watermark==1)
{
$iinfo=getimagesize($destination, $iinfo);
$nimage=imagecreatetruecolor($image_size[0],$image_size[1]);
$white=imagecolorallocate($nimage,255,255,255);
$black=imagecolorallocate($nimage, 0,0,0);
$red=imagecolorallocate($nimage,255,0,0);
imagefill($nimage,0,0,$white);
switch ($iinfo[2 ])
{
case 1:
$simage =imagecreatefromgif($destination);
break;
case 2:
$simage =imagecreatefromjpeg($destination);
break;
case 3:
$simage =imagecreatefrompng($destination);
break;
case 6:
$simage =imagecreatefromwbmp($destination);
break;
default:
die("This type of file cannot be uploaded!");
exit;
}
imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$image_size[1]);
imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);
switch($watertype)
{
case 1: //