PHP Image Watermark Class Code, PHP images add text watermark and image watermark

/** * Add watermark class, support the text image watermark Transparency settings, watermark picture background transparent. * Use: (PHP text watermark effect) * $obj = new Watermask ($imgFileName); Instantiating an Object * $obj $waterType = 1; Type: 0 for text watermark, 1 for picture watermark * $obj $transparent = 45; Watermark Transparency * $obj $waterStr = ' bbs.it-home.org '; Watermark Text * $obj $fontSize = 16; Text font size * $obj $fontColor = array (255,0255); Watermark text color (RGB) * $obj $fontFile = = ' Ahgbold.ttf '; Font files * $obj->output (); Output watermark image file overlay into the input picture file */ Class watermask{ public $waterType = 1; Watermark Type: 0 for text watermark, 1 for picture watermark Public $pos = 0; Watermark Location Public $transparent = 45; Watermark Transparency Public $waterStr = ' bbs.it-home.org '; Watermark Text public $fontSize = 16; Text font size Public $fontColor = Array (255,0,255); Watermark text color (RGB) Public $fontFile = ' Ahgbold.ttf '; Font files Public $waterImg = ' logo.png '; Watermark Picture Private $srcImg = '; Picture to add a watermark Private $im = '; Picture handle Private $water _im = "; Watermark Picture Handle Private $SRCIMG _info = "; Picture information Private $WATERIMG _info = "; Watermark Picture Information Private $str _w = "; Watermark Text Width Private $str _h = "; Watermark Text Height Private $x = '; Watermark X Coordinate Private $y = '; Watermark y-coordinate function __construct ($img) {//destructor $this->srcimg = file_exists ($img)? $img: Die (' ". $img. '" Source file does not exist!) '); } Private Function Imginfo () {//Get information about the picture that needs to be added to the watermark and load the picture. $this->srcimg_info = getimagesize ($this->srcimg); Switch ($this->srcimg_info[2]) { Case 3: $this->im = imagecreatefrompng ($this->srcimg); Break 1; Case 2: $this->im = imagecreatefromjpeg ($this->srcimg); Break 1; Case 1: $this->im = imagecreatefromgif ($this->srcimg); Break 1; Default Die (' Original picture ('. $this->srcimg. ') is not formatted, only PNG, JPEG, GIF are supported. '); } } Private Function Waterimginfo () {//Get the information of the watermark picture and load the picture. $this->waterimg_info = getimagesize ($this->waterimg); Switch ($this->waterimg_info[2]) { Case 3: $this->water_im = imagecreatefrompng ($this->waterimg); Break 1; Case 2: $this->water_im = imagecreatefromjpeg ($this->waterimg); Break 1; Case 1: $this->water_im = imagecreatefromgif ($this->waterimg); Break 1; Default Die (' Watermark picture ('. $this->srcimg. ') is not formatted, only PNG, JPEG, GIF are supported. '); } } Private Function Waterpos () {//Watermark position algorithm Switch ($this->pos) { Case 0://Random position $this->x = rand (0, $this->srcimg_info[0]-$this->waterimg_info[0]); $this->y = rand (0, $this->srcimg_info[1]-$this->waterimg_info[1]); Break 1; Case 1://upper Left $this->x = 0; $this->y = 0; Break 1; Case 2://Kaminaka $this->x = ($this->srcimg_info[0]-$this->waterimg_info[0])/2; $this->y = 0; Break 1; Case 3://upper Right $this->x = $this->srcimg_info[0]-$this->waterimg_info[0]; $this->y = 0; Break 1; Case 4://Middle Left $this->x = 0; $this->y = ($this->srcimg_info[1]-$this->waterimg_info[1])/2; Break 1; Case 5://Middle $this->x = ($this->srcimg_info[0]-$this->waterimg_info[0])/2; $this->y = ($this->srcimg_info[1]-$this->waterimg_info[1])/2; Break 1; Case 6://Middle Right $this->x = $this->srcimg_info[0]-$this->waterimg_info[0]; $this->y = ($this->srcimg_info[1]-$this->waterimg_info[1])/2; Break 1; Case 7://Lower Left $this->x = 0; $this->y = $this->srcimg_info[1]-$this->waterimg_info[1]; Break 1; Case 8://Down $this->x = ($this->srcimg_info[0]-$this->waterimg_info[0])/2; $this->y = $this->srcimg_info[1]-$this->waterimg_info[1]; Break 1; Default://Down Right $this->x = $this->srcimg_info[0]-$this->waterimg_info[0]; $this->y = $this->srcimg_info[1]-$this->waterimg_info[1]; Break 1; } } Private Function waterimg () { if ($this->srcimg_info[0] <= $this->waterimg_info[0] | | $this->srcimg_info[1] <= $this->waterimg_ Info[1]) { Die (' The watermark is bigger than the original! '); } $this->waterpos (); $cut = Imagecreatetruecolor ($this->waterimg_info[0], $this->waterimg_info[1]); Imagecopy ($cut, $this->im,0,0, $this->x, $this->y, $this->waterimg_info[0], $this->waterimg_info[1]) ; $pct = $this->transparent; Imagecopy ($cut, $this->water_im,0,0,0,0, $this->waterimg_info[0], $this->waterimg_info[1]); Imagecopymerge ($this->im, $cut, $this->x, $this->y,0,0, $this->waterimg_info[0], $this->waterimg_ INFO[1], $pct); } Private Function Waterstr () { $rect = Imagettfbbox ($this->fontsize,0, $this->fontfile, $this->waterstr); $W = ABS ($rect [2]-$rect [6]); $h = ABS ($rect [3]-$rect [7]); $fontHeight = $this->fontsize; $this->water_im = Imagecreatetruecolor ($w, $h); Imagealphablending ($this->water_im,false); Imagesavealpha ($this->water_im,true); $white _alpha = Imagecolorallocatealpha ($this->water_im,255,255,255,127); Imagefill ($this->water_im,0,0, $white _alpha); $color = Imagecolorallocate ($this->water_im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor [2]); Imagettftext ($this->water_im, $this->fontsize,0,0, $this->fontsize, $color, $this->fontfile, $this WATERSTR); $this->waterimg_info = Array (0=> $w,1=> $h); $this->waterimg (); } function output () { $this->imginfo (); if ($this->watertype = = 0) { $this->waterstr (); }else { $this->waterimginfo (); $this->waterimg (); } Switch ($this->srcimg_info[2]) { Case 3: Imagepng ($this->im, $this->srcimg); Break 1; Case 2: Imagejpeg ($this->im, $this->srcimg); Break 1; Case 1: Imagegif ($this->im, $this->srcimg); Break 1; Default Die (' Add watermark failed! '); Break } Imagedestroy ($this->im); Imagedestroy ($this->water_im); } } ?> Copy Code

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