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/*php image with text Watermark class Library
This class library only supports the text watermark temporarily, the position is the lower right corner, the color is random
Call Method:
1, the need to add watermark to the top of the file to introduce class library:
Include_once ' imageclass.php ';
2, declare the new class:
$tpl =new Image_fu;
3, to the image watermark provides parameters:
$TPL->img (image path, watermark text, font path, font size, font angle);
For example: $tpl->img (' abc.jpg ', ' This is a watermark text ', ' Ziti.ttf ', 30,0)
*/
The code is as follows:
watermark.php
<?php
Class image_fu{
Private $image;
Private $img _info;
Private $img _width;
Private $img _height;
Private $img _im;
Private $img _text;
Private $img _ttf= ';
Private $img _new;
Private $img _text_size;
Private $img _JD;
function img ($img = ', $txt = ', $ttf = ', $size =12, $jiaodu =0) {
if (Isset ($img) &&file_exists ($img)) {//detect if picture exists
$this->image = $img;
$this->img_text= $txt;
$this->img_text_size= $size;
$this->img_jd= $jiaodu;
if (file_exists ($ttf)) {
$this->img_ttf= $ttf;
}else{
Exit (' Font file: '. $ttf. ') does not exist! ');
}
$this->imgyesno ();
}else{
Exit (' picture file: '. $img. ' does not exist ');
}
}
Private Function Imgyesno () {
$this->img_info =getimagesize ($this->image);
$this->img_width = $this->img_info[0];//picture width
$this->img_height= $this->img_info[1];//Picture High
Detecting picture types
Switch ($this->img_info[2]) {
Case 1: $this->img_im = imagecreatefromgif ($this->image);
Case 2: $this->img_im = imagecreatefromjpeg ($this->image);
Case 3: $this->img_im = imagecreatefrompng ($this->image);
Default:exit (' image format does not support Watermark ');
}
$this->img_text ();
}
Private Function Img_text () {
Imagealphablending ($this->img_im,true);
Set color
$color =imagecolorallocate ($this->img_im,rand (0,255), Rand (0,255), Rand (0,255));
$txt _height= $this->img_text_size;
$txt _jiaodu= $this->img_jd;
$ttf _im=imagettfbbox ($txt _height, $txt _jiaodu, $this->img_ttf, $this->img_text);
$w = $ttf _im[2]-$ttf _im[6];
$h = $ttf _im[3]-$ttf _im[7];
$w = $ttf _im[7];
$h = $ttf _im[8];
unset ($ttf _im);
$txt _y = $this->img_height-$h;
$txt _x = $this->img_width-$w;
$txt _y = 0;
$txt _x = 0;
$this->img_new= @imagettftext ($this->img_im, $txt _height, $txt _jiaodu, $txt _x, $txt _y, $color,
$this->img_ttf, $this->img_text);
@unlink ($this->image);//Delete picture
Switch ($this->img_info[2]) {//Get the format of the background picture
Case 1:imagegif ($this->img_im, $this->image);
Case 2:imagejpeg ($this->img_im, $this->image);
Case 3:imagepng ($this->img_im, $this->image);
Default:exit (' watermark picture failed ');
}
}
Show pictures
function Img_show () {echo ' image. ' "border=" 0 "alt=" '. $this->img_text. ' "/>";}
Free memory
Private Function img_nothing () {
unset ($this->img_info);
Imagedestroy ($this->img_im);
}
}
$ADDWK = new Image_fu ();
$addwk->img (' 2.jpg ', ' testwatermark ', ' Hua Kang Maiden font. TTF ', 33,0);
$addwk->img_show (); Call Display Picture
?>
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