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PHP Implementation site upload image automatically watermark

Source: Internet
Author: User
Tags exit file size imagecopy imagejpeg
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Using PHP to upload the image watermark program is to determine the file type to build graphics, and then copy it to the original set up the graphics, fill and build rectangle, in order to write imagestring () or the original has been fixed image program to determine the watermark type: One is a string, Another is to add a graphic object on top. If you are familiar with PHP's GD library, read this article is not difficult! The following is a reference fragment:

The following are the referenced contents:

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

Parameter description:

$max _file_size: Upload file size limit, unit byte

$destination _folder: Upload file path

$watermark: Whether additional watermark (1 for Watermark, other for no watermark);

Instructions for use:

1. Remove the "Extension=php_gd2.dll" line in front of the php.ini file, because we need to use the GD library;

2. Change Extension_dir = to the directory where your Php_gd2.dll is located;

3. http://www.knowsky.com/php.asp;

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

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; Upload file size limit, unit byte

$destination _folder= "uploadimg/"; Upload file path

$watermark = 1; Whether to add watermark (1 for Watermark, other for no watermark);

$watertype = 1; Watermark Type (1 for text, 2 for picture)

$waterposition = 1; Watermark position (1 is lower left corner, 2 is lower right corner, 3 is upper left corner, 4 is upper right corner, 5 is centered);

$waterstring = "http://www.xplore.cn/"; Watermark String

$waterimg = "Xplore.gif"; Watermark Picture

$imgpreview = 1; Whether to generate a preview diagram (1 is a build, others are not generated);

$imgpreviewsize =1/2; Thumbnail proportions

?>

<title>zwell Image Upload Program </title>
<style type= "Text/css" >
<!--
Body
{
font-size:9pt;
}
Input
{
Background-color: #66CCFF;
border:1px inset #CCCCCC;
}
-->
</style>
<body>
<form enctype= "Multipart/form-data" method= "post" name= "Upform" >
Upload file:
<input name= "upfile" type= "File" >
<input type= "Submit" value= "Upload" ><br>
The types of files allowed to upload are: <?=implode (', ', $uptypes)?>
</form>
<?php
if ($_server[' request_method '] = = ' POST ')
{
if (!is_uploaded_file ($_files["Upfile"][tmp_name))
Is there a file
{
echo "Picture does not exist!";
Exit
}
$file = $_files["Upfile"];
if ($max _file_size < $file ["size"])
Check File size
{
echo "file is too big!";
Exit
}
if (!in_array ($file ["type"], $uptypes))
Check 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) && $overwrite!= True)
{
echo "file with the same name already exists";
Exit
}
if (!move_uploaded_file ($filename, $destination))
{
echo "Move file Error";
Exit
}
$pinfo =pathinfo ($destination);
$fname = $pinfo [basename];
echo "<font color=red> has been successfully uploaded </font><br> FileName:
<font color=blue> ". $destination _folder. $fname." </font><br> ";
echo "width:". $image _size[0];
echo "Length:". $image _size[1];
echo "<br> 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]-15,80, $image _size[1], $white);
Switch ($watertype)
{
Case 1://Add watermark String
Imagestring ($nimage, 2,3, $image _size[1]-15, $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, $destination);
Break
}
Overwrite original upload file
Imagedestroy ($nimage);
Imagedestroy ($simage);
}
if ($imgpreview ==1)
{
echo "<br> picture preview:<br>";
echo "<ccid_file values=" \ "Width=". ($image _size[0]* $imgpreviewsize). "
Height= ". ($image _size[1]* $imgpreviewsize); "
echo "alt=\" Picture preview: \ r filename: ". $destination." \ r upload time: \ "/>";
}
}
?>
</body>


This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
php watermark image php image upload gallery php image upload tutorial php safe image upload upload image php mysqli php image upload class php image upload library

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