PHP program code for uploading images to the server-PHP source code

Source: Internet
Author: User
Tags imagecopy imagejpeg
This article introduces the program code for uploading images to the server in PHP. This program not only uploads images but also adds watermarks to uploaded images. For more information, see. This article introduces the program code for uploading images to the server in PHP. This program not only uploads images but also adds watermarks to uploaded images. For more information, see.

Script ec (2); script

The Code is as follows:


/*************************************** ***************************************

Parameter description:
$ Max_file_size: size limit of the uploaded file, in bytes
$ Destination_folder: File Upload path
$ Watermark: whether to add a watermark. (1 indicates adding a watermark; others indicates not adding a watermark );

Instructions for use:
. Remove the "extension = php_gd2.dll" line in the PHP. ini file, because we need to use the GD library;
. Change extension_dir = to the directory where your php_gd2.dll is located;
**************************************** **************************************/

// Upload file type list
$ Uptypes = array (
'Image/jpg ',
'Image/jpeg ',
'Image/png ',
'Image/pjpeg ',
'Image/gif ',
'Image/bmp ',
'Image/x-png'
);

$ Max_file_size = 2000000; // size limit of uploaded files, in bytes
$ Destination_folder = "uploadimg/"; // File Upload path
$ Watermark = 1; // whether to add a watermark. (1 indicates adding a watermark. Otherwise, no watermark is added );
$ Watertype = 1; // watermark type (1 is text, 2 is image)
$ Waterposition = 1; // watermark position (1 indicates the lower left corner, 2 indicates the lower right corner, 3 indicates the upper left corner, 4 indicates the upper right corner, and 5 indicates the center );
$ Waterstring = "http://www.xplore.cn/"; // watermark string
$ Waterimg = "xplore.gif"; // watermark image
$ Imgpreview = 1; // whether to generate a preview image (1 is generated, others are not generated );
$ Imgpreviewsize = 1/2; // thumbnail Ratio
?>


ZwelL Image Upload Program


If ($ _ SERVER ['request _ method'] = 'post ')
{
If (! Is_uploaded_file ($ _ FILES ["upfile"] [tmp_name])
// Whether a file exists
{
Echo "the image does not exist! ";
Exit;
}

$ File = $ _ FILES ["upfile"];
If ($ max_file_size <$ file ["size"])
// Check the file size
{
Echo "the file is too large! ";
Exit;
}

If (! In_array ($ file ["type"], $ uptypes ))
// Check the file type
{
Echo "file type does not match! ". $ File [" type "];
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 "a file with the same name already exists ";
Exit;
}

If (! Move_uploaded_file ($ filename, $ destination ))
{
Echo "An error occurred while moving the 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];
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 );
$ 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 types ");
Exit;
}

Imagecopy ($ nimage, $ simage, 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: // Add a watermark string
Imagestring ($ nimage, 2, 3, $ image_size [1]-15, $ waterstring, $ black );
Break;
Case 2: // Add a watermark image
$ Simage1 = imagecreatefromgif ("xplore.gif ");
Imagecopy ($ nimage, $ simage1 );
Imagedestroy ($ simage1 );
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 uploaded file
Imagedestroy ($ nimage );
Imagedestroy ($ simage );
}

If ($ imgpreview = 1)
{
Echo"
Image preview:
";
Echo "echo" alt = "image preview: r file name:". $ destination. "r upload time:"> ";
}
}
?>

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