PHP Image Watermark Method

<?php

Class Protect_img {/** * Image File variables * @var string $file//img file * @var string $save//Saved  Water marked file * @var string $im//img resource * @var string $tmp//temp img for encoding */private    $file;    Private $save;       Private $im;      Private $tmp;      /** * secure_img, Bootstrap the class with IMG file * @param string $file */function __construct ($file) {      if (Is_file ($file)) {$this->file= $file; $this->save= ' wm '. basename ($this->file). JPG ';        New file to save watermarked image as $this->im= $this->open_img ($this->file); Open image $this->tmp=__dir__. ' /'. __class__. '.       JPG ';      TMP img File} else {$this->error_img ("works with a file"); }}/** * Clean up tmp file */function __destruct () {if (Is_file ($this->tmp)) {unlink ($this-&G T;TMP); }}/** * Private variables for watermark String *      * @var array $watermark file or String * @var int $mark _alpha watermark transpanency * @var int $mark _FO      NT Font type * @var int $mark _start_x left and right position * @var int $mark _start_y up and down position   * @var int $mark _border watermark boarder * @var int $mark _height watermark Height * @var int $mark _width     Watermark Width * @var string $color 1 boarder and Font color * @var string $color 2 background color * @var string $encoded encoded image String */private $watermark =array ();     File or string private $mark _alpha=50;    Private $mark _font=4;    Private $mark _start_x=20;    Private $mark _start_y=20;    Private $mark _border=9;    Private $mark _height=36;    Private $mark _width;    Private $color 1= ' 0x0000FF ';    Private $color 2= ' 0xFFFFFF ';    Private $encoded; /** * __get () Select private Values magicly * @param string $name * @return string, on error display image wit H Error     */function __get ($name) {switch ($name) {case ' encoded ': return $this->encoded; break;    Case ' save ': Return $this->save;            Break        Default: $this->error_img (' called an unknown variable ');    }; }/** * __set () for setting private watermark Properties * @param type $name * @param type $value * @r       eturn bool, return error image */function __set ($name, $value) {switch ($name) {case ' Add_watermark ':       $this->watermark[]= $value;       $new =round (((strlen ($value)) * (((strlen ($value)/2) +10)/2));       if ($new > $this->mark_width) {$this->mark_width= $new;      } $this->mark_height= $this->mark_height+20;      Break Case ' Watermark_alpha ': if (is_numeric ($value) && (0 <= $value | | $value <=)) {$this-&        Gt;mark_alpha= $value; } else {$this->error_img ($value. "is not a number or betweEn 0 and, plese fix this ");      } break;        Case ' Watermark_font ': if (Is_numeric ($value)) {$this->mark_font= $value;       } else {$this->error_img ($value. "Is not a number, plese fix this");      } break;        Case ' watermark_start_x ': if (Is_numeric ($value)) {$this->mark_start_x= $value;       } else {$this->error_img ($value. "Is not a number, plese fix this");      } break;       Case ' watermark_start_y ': if (Is_numeric ($value)) {$this->mark_start_y= $value;       } else {$this->error_img ($value. "Is not a number, plese fix this");      } break;        Case ' Watermark_border ': if (Is_numeric ($value)) {$this->mark_border= $value;       } else {$this->error_img ($value. "Is not a number, plese fix this");      } break; Case ' watermark_height ': if (Is_numeric ($value)) {$this->mark_height= $value;       } else {$this->error_img ($value. "Is not a number, plese fix this");      } break;        Case ' watermark_width ': if (Is_numeric ($value)) {$this->mark_width= $value;       } else {$this->error_img ($value. "Is not a number, plese fix this");      } break; Case ' watermark_colors ': if (Is_array ($value) && count ($value) = = 2) {$this->color1=array_shift ($v        Alue);       $this->color2=array_shift ($value);        } else {$this->error_img ("works with a array with values!");      } break; Default: $this->error_img ("Can ' t set the following value". $name);     Break    } return TRUE; }/** * Apply water mark to image * @param type $x pass all to unset right alignment * @param type $y pass all to U Nset Bottom Alignment * @return Resource Returns an imagecopymerge resource */function Water_mark ($x = ' right ', $y = ' bo Ttom ') {if (is_aRray ($this->watermark) && count ($this->watermark) > 0) {$stamp = Imagecreatetruecolor ($this->mark    _width, $this->mark_height);    Imagefilledrectangle ($stamp, 0, 0, $this->mark_width-5, $this->mark_height-5, $this->color1); Imagefilledrectangle ($stamp, $this->mark_border, $this->mark_border, $this->mark_width-($this->mark_    border+5), $this->mark_height-($this->mark_border+5), $this->color2);    $top = $this->mark_border+11; foreach ($this->watermark as $w) {imagestring ($stamp, $this->mark_font, $this->mark_border+11, $top, $w, $th     Is->color1);    $top = $top +18;   }} else {$this->error_img (' Watermark is not set '); }/Subtract watermark width and start width from image width if ($x = = ' right ') {$sta    Rt_x=imagesx ($this->im)-imagesx ($stamp)-$this->mark_start_x;    } else {$start _x= $this->mark_start_x; }//If set to bottom and then subtract WATermark height and start height from image height if ($y = = ' Bottom ') {$start _y=imagesy ($this->im)-imagesy ($s    Tamp)-$this->mark_start_y;    } else {$start _y= $this->mark_start_y; } return Imagecopymerge ($this->im, $stamp, $start _x, $start _y, 0, 0, Imagesx ($stamp), Imagesy ($stamp), $this->mark  _alpha);   }/** * Send image to the browser as JPEG */function send_img () {Header ("content-type:image/jpeg");   Imagejpeg ($this->im);   Imagedestroy ($this->im);  Exit (); }/** * Save the water marked image to a new file on the current path */function save_img () {return $this-&GT;WR  Ite_img ($this->save); }/** * Write new image to a file * @param type $file * @return Boolean */function write_img ($file) {imag   Ejpeg ($this->im, $file);   Imagedestroy ($this->im);  return TRUE; }/** * Encode JPEG image as base64 with Data:prefix * @return Boolean */function encode_img () {imagejpeg ($t His->im, $this-&GT;TMP);   Imagedestroy ($this->im);   $t =file_get_contents ($this->tmp);   $this->encoded= ' data:image/jpeg;base64, '. Base64_encode ($t);  return TRUE; }/** * encode img with  HTML tag * @return String */function encode_img_html ($alt = ' watermark Teste   R ') {if (Isset ($this->encoded)) {return ' encoded. ' alt= '. $alt. '/> ';    } else {$this->error_img ("must encode this image first"); }}/** * open_img * @param type $filename * @return Boolean */function open_img ($file) {$fn =explode ('. '),   $file);   $type =array_pop ($FN); Switch (Strtolower ($type)) {//Add more MIME types case ' jpg ': case ' jpeg ': Case ' JPE ': Return Imagecreatefromjpeg ($f    ILE); Break    Case "GIF": Return Imagecreatefromgif ($file); Break    Case "PNG": Return Imagecreatefrompng ($file); Break    Case "BMP": Case "wbmp": Return Imagecreatefromwbmp ($file); Break Default  $this->error_img ("$type is invalid, with an image file [bmp, JPG, GIF or PNG]");  } return TRUE;    }/** * Prints error in an image instead of text * @param string $txt */Private Function error_img ($txt) {    $w = 600;    $h = 60;    $f = 12;    $stamp = Imagecreatetruecolor ($w, $h);    Imagefilledrectangle ($stamp, 0, 0, $w -5, $h -5, ' 0xcd0000 '); Imagefilledrectangle ($stamp, $this->mark_border, $this->mark_border, $w-($this->mark_border+5), $h-($    this->mark_border+5), ' 0xFFFAFA ');    Imagestring ($stamp, $f, $this->mark_border+11, $this->mark_border+11, $txt, ' 0xcc1100 ');    Header ("http/1.0 Internal Server Error");    Header ("Content-type:image/jpeg");    Imagejpeg ($stamp);    Imagedestroy ($stamp);  Exit (); }}

Usage:

<?php/* * To change this template, choose Tools | Templates * and open the template in the editor. */$file = ' oldboxes.png ';//$test = ' string '; $test = ' save ';//$test = ' encode ';//$test = ' invalid_file ';//$test = ' Encode_ HTML ';//$test = ' invalid_img '; require_once ' protectimg.class.php '; switch ($test) {case ' string ': $img =new protect_img (   $file);   $img->add_watermark= "Name here";   $img->add_watermark= "<[email protected]>";   $img->add_watermark= "http://www.website.com";  Add watermark text First, width guessing might not work out as your want,//Just play around to get the proper width   To meet your needs $img->watermark_width=300;      $img->watermark_font=8; /** $img->watermark_alpha=46; $img->watermark_font=5; $img->watermark_start_x=20; $img->watermark_ start_y=180, $img->watermark_border=8; $img->watermark_height=70; $img->watermark_colors=array (' 0xABCDEF ', ' 0x012345 ');   */$img->water_mark ();  $img->send_img ();  Break Case ' InvaLid_file ': $img =new protect_img (' $invalid ');  Break         Case ' invalid_img ': $invalid = '/var/log/apache2/error.log ';  $img =new protect_img ($invalid);  Break   Case ' encode '://return encoded string, for storing in a db, after Water_mark header ("Content-type:text/plain");   $img =new protect_img ($file);   $img->add_watermark= $mark;   $img->add_watermark= "Name here";   $img->add_watermark= "<[email protected]>";   $img->add_watermark= "http://www.website.com";  Add watermark text First, width guessing might not work out as your want,//Just play around to get the proper width   To meet your needs $img->watermark_width=300;    $img->watermark_font=8;   $img->encode_img ();   Echo $img->encoded;  Exit ();  Break   Case ' encode_html '://Encode image, after Water_mark header ("content-type:text/html");   $img =new protect_img ($file);   $img->add_watermark= $mark;   $img->add_watermark= "Name here"; $img->add_watermark= "<[emaiL protected]> ";   $img->add_watermark= "http://www.website.com";  Add watermark text First, width guessing might not work out as your want,//Just play around to get the proper width   To meet your needs $img->watermark_width=300;      $img->watermark_font=8;   $img->water_mark ();   $img->encode_img ();  echo $img->encode_img_html ();  Break   Case ' save ': $img =new protect_img ($file);   $img->add_watermark= $mark;   $img->add_watermark= "Name here";   $img->add_watermark= "<[email protected]>";   $img->add_watermark= "http://www.website.com";  Add watermark text First, width guessing might not work out as your want,//Just play around to get the proper width   To meet your needs $img->watermark_width=300;    $img->watermark_font=8;   $img->water_mark ();   $img->save_img ();   $file = Str_replace (basename ($_server[' Script_name "), $img->save, $_server[' script_name ']);   Header ("content-type:text/html"); Echo '<a href= "http://". $_server[' Http_host '). $file. ' > ' $file. '  </a> saved ';  break;} ?>