PHP adds Chinese watermark _php tutorial to images

Add Chinese watermark
/*-------------------------------------------------------------
* * Description: This is a custom class used to add a bottom watermark to the specified picture (without occupying the picture display area), and to create an object call
* * Version: v1.0
* * Created: 2007-10-09
* * Updated: 2007-10-09
* * Person: Old fat cow ([email]fatkenme@163.com[/email] qq:70177108)
* * Description: 1, the need for GD library support, need ICONV support (PHP5 already included without loading)
2, only suitable for three kinds of pictures, jpg/jpeg/gif/png, other types do not handle
3. Note that the attributes of the directory in which the picture is located must be writable
4. Call Example:
$OBJIMG = new Mywaterdownchinese ();
$OBJIMG->path = "images/";
$OBJIMG->filename = "1.jpg";
$OBJIMG->text = "Chubby dating net [Url]www.ppfriend.com[/url]";
$OBJIMG->font = "./font/simhei.ttf";
$OBJIMG->run ();
* * member function:
----------------------------------------------------------------*/
Class mywaterdownchinese{
var $Path = "./"; The relative path of the directory in which the picture is located relative to the page calling this class
var $FileName = ""; The name of the picture, such as "1.jpg"
var $Text = ""; Watermark text to be added to the image, support Chinese
var $TextColor = "#ffffff"; Text color, GIF picture, font color can only be black
var $TextBgColor = "#000000"; The color of the text's background bar
var $Font = "C://windows//fonts//simhei.ttf"; Font storage directory, relative path
var $OverFlag = true; Whether to overwrite the original, default to overwrite, when not covered, automatically after the original file name + "_water_down", such as "1.jpg" = "1_water_down.jpg"
var $BaseWidth = 200; The width of the picture must be at least >=200, and the watermark text will be added.

//------------------------------------------------------------------
Function: constructor of Class (Form php5.0 or more)
Parameters: None
return: None
function __construct () {;}

//------------------------------------------------------------------
Function: destructor of class (form above php5.0)
Parameters: None
return: None
function __destruct () {;}
//------------------------------------------------------------------

//------------------------------------
Function: Object run function, add watermark to Picture
Parameters: None
return: None
function Run ()
{
if ($this->filename = = "" | | $this->text = = "")
Return
Detects if the GD library is installed
if (false = = Function_exists ("Gd_info"))
{
echo "System does not have the GD library installed, can not add watermark to the picture.";
Return
}
Set input, output picture path name
$arr _in_name = Explode (".", $this->filename);
//
$INIMG = $this->path. $this->filename;
$OUTIMG = $INIMG;
$TMPIMG = $this->path. $arr _in_name[0]. " _tmp. ". $arr _in_name[1]; Temporary processing of pictures, very important
if (! $this->overflag)
$OUTIMG = $this->path. $arr _in_name[0]. " _water_down. ". $arr _in_name[1];
Detect if a picture exists
if (!file_exists ($INIMG))
return;
Get the properties of a picture
$groundImageType = @getimagesize ($INIMG);
$imgWidth = $groundImageType [0];
$imgHeight = $groundImageType [1];
$imgType = $groundImageType [2];
if ($imgWidth < $this->basewidth)//Less than basic width, not processed
Return

The picture is not jpg/jpeg/gif/png when it is not processed
Switch ($imgType)
{
Case 1:
$image = Imagecreatefromgif ($INIMG);
$this->textbgcolor = "#ffffff"; GIF picture font can only be black, so the background color is set to white
Break
Case 2:
$image = Imagecreatefromjpeg ($INIMG);
Break
Case 3:
$image = Imagecreatefrompng ($INIMG);
Break
Default
Return
Break
}
Create color
$color = @imagecolorallocate ($image, Hexdec (substr ($this->textcolor,1,2)), Hexdec (substr ($this->textcolor, 3,2)), Hexdec (substr ($this->textcolor,5,2))); Text color
Generate an empty picture, its height increases the watermark height at the bottom
$newHeight = $imgHeight +20;
$OBJTMPIMG = @imagecreatetruecolor ($imgWidth, $newHeight);
$colorBg = @imagecolorallocate ($objTmpImg, Hexdec (substr ($this->textbgcolor,1,2)), Hexdec (substr ($this- textbgcolor,3,2)), Hexdec (substr ($this->textbgcolor,5,2))); Background color
Fill the background color of the picture
@imagefill ($OBJTMPIMG, 0,0, $colorBg);
Copy the original to a temporary image
@imagecopy ($OBJTMPIMG, $image, 0,0,0,0, $imgWidth, $imgHeight);
Create a watermark text object to write to
$objText = $this->createtext ($this->text);
Calculate the location of the watermark text to be written
$x = 5;
$y = $newHeight-5;
Write a text watermark
@imagettftext ($OBJTMPIMG, 10,0, $x, $y, $color, $this->font, $objText);
Create a new picture, temporary picture
Switch ($imgType)
{
Case 1:
Imagegif ($OBJTMPIMG, $TMPIMG);
Break
Case 2:
Imagejpeg ($OBJTMPIMG, $TMPIMG);
Break
Case 3:
Imagepng ($OBJTMPIMG, $TMPIMG);
Break
Default
Return
Break
}
Freeing resources
@imagedestroy ($OBJTMPIMG);
@imagedestroy ($image);
Renaming files
if ($this->overflag)
{
Overwrite the original
@unlink ($INIMG);
@rename ($TMPIMG, $OUTIMG);
}
Else
{
Do not overwrite the original
@rename ($TMPIMG, $OUTIMG);
}
}

//--------------------------------------
Function: Create watermark Text Object
Parameters: None
Return: Created Watermark text Object
function CreateText ($instring)
{
$outstring = "";
$max =strlen ($instring);
for ($i =0; $i < $max; $i + +)
{
$h =ord ($instring [$i]);
if ($h >=160 && $i < $max-1)
{
$outstring. = "Base_convert" (Bin2Hex (Iconv ("gb2312", "Ucs-2", substr ($instring, $i, 2)), 16,10). ";";
$i + +;
}
Else
{
$outstring. = $instring [$i];
}
}
return $outstring;
}

}//class
?>

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