Share: PHP Upload the image code

Transferred from: http://www.jbxue.com/article/6379.html

PHP upload images of the code, very simple, to achieve the basic file type, file size detection, and achieve the basic watermark and thumbnail function, more suitable for beginners friends reference.

The upload page is merged with the processing page, the file name is test_upload_pic.php and the complete code is as follows:

Copy Code code example:

!--? php
/*
* Parameter Description
* $max _file_size: Upload file size limit, Unit byte
* $destination _folder: Upload file path
* $wate Rmark: Whether additional watermark (1 is watermark, the other is not watermark);
* http://www.jbxue.com
* Instructions for use:
* 1. The "Extension=php_gd2.dll" line in the php.ini file is removed, because we need to use the GD library;
* 2. Change Extension_dir = to the directory where your Php_gd2.dll is located;
*/
//Upload file type list
$uptypes = Array (
' image/jpg ',
' image/png ',
' image/jpeg ',
' image/pjpeg ',
' Image/gif ',
' image/bmp ',
' image/x-png '
);
$max _file_size = 20000000;//upload file size limit, unit byte
$ Destination_folder = ' uploadimg/'; Upload file path
$watermark = 1;//Whether additional watermark (1 is watermark, the other is no watermark);
$watertype = 1;//watermark type (1 text, 2 as 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, and 5 is centered);
$waterstring = "http://www.jbxue.com/";//watermark string
$waterimg = "xplore.gif";//watermark picture
$imgpreview = 1;//whether to generate a preview map (1 For generation, others are not generated);
$imgpreviewsize = 1/2;//thumbnail scale
?


zwell picture uploader

if ($_server[' request_method '] = = ' POST ') {
Determine if there is an upload file

if (Is_uploaded_file ($_files[' upfile ' [' tmp_name '])) {
$upfile = $_files[' upfile ');
Print_r ($_files[' upfile ');
$name = $upfilep [' name ']; Filename
$type = $upfile [' type ']; File type
$size = $upfile [' Size ']; File size
$tmp _name = $upfile [' Tmp_name ']; Temporary files
$error = $upfile [' ERROR ']; Cause of error

if ($max _file_size < $size) {//Determine the size of the file
Echo ' upload file is too large ';
Exit ();
}

if (!in_arrar ($type, $uptypes)) {//Determine the type of file
echo ' upload file type does not match '. $type;
Exit ();
}

if (!file_exists ($destination _folder)) {
mkdir ($destination _folder);
}

if (file_exists ("upload/". $_files["File" ["Name"])) {
echo $_files["File" ["Name"]. "already exists.";
} else {
Move_uploaded_file ($_files["file"] ["Tmp_name"], "upload/". $_files["File" ["name"]);
echo "Stored in:". " Upload/". $_files["File" ["Name"];
}

$pinfo = PathInfo ($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 ($tmp _name, $destination)) {
echo "Error moving File";
Exit ();
}

$pinfo = PathInfo ($destination);
$fname = $pinfo [basename];
echo "has been successfully uploaded
File name: ". $destination _folder. $fname. "
";
echo "width:". $image _size[0];
echo "Length:". $image _size[1];
echo "
Size: ". $file ["Size"]. "bytes";

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 ("Unsupported file type");
Exit
}

Imagecopy ($nimage, $simage, 0, 0, 0, 0, $image _size[0], $image _size[1]);
Imagefilledrectangle ($nimage, 1, $image _size[1]-$image _size[1], $white);

Switch ($watertype) {
Case 1://Add watermark String

Imagestring ($nimage, 2, 3, $image _size[1]-$waterstring, $black);
Break
Case 2://Add watermark Picture

$simage 1 = imagecreatefromgif ("Xplore.gif");
Imagecopy ($nimage, $simage 1, 0, 0, 0, 0, 85, 15);
Imagedestroy ($simage 1);
Break
}

Switch ($iinfo [2]) {
Case 1:
Imagegif ($nimage, $destination);

Imagejpeg ($nimage, $destination);
Break
Case 2:
Imagejpeg ($nimage, $destination);
Break
Case 3:
Imagepng ($nimage, $destination);
Break
Case 6:
Imagewbmp ($nimage, $destination);
Imagejpeg ($nimage, $destination);
Break
}

Overwrite the original upload file
Imagedestroy ($nimage);
Imagedestroy ($simage);
}

if ($imgpreview = = 1) {
echo "
Picture preview:
";
echo "echo" alt=\ "Picture preview: \ r file name:". $destination. "\ r upload time: \" > ";
}
}
}
?>

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