PHP implements the image function of adding watermarks and text based on Imagick-PHP Tutorial-php.cn

PHP implements the image function of adding watermarks and text based on Imagick

墨辰丷

Release： 2023-03-30 15:50:02

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This article mainly introduces the function of adding watermarks and text to pictures in PHP based on Imagick. Friends who are interested can refer to it. I hope it will be helpful to everyone.

Imagick is used here to generate pictures

Solve the problem of garbled Chinese text in pictures and add supported fonts

public function getPic(){
  header(&#39;Content-Type: text/html; charset=utf-8&#39;);
  $text = &#39;中粮屯河（sh600737）&#39;;//中粮屯河（sh600737）
  $watermark = &#39;305988103123zczcxzas&#39;;
  $len = strlen($text);
  $width = 10.5*(($len-8)/3*2+8);
  $height = 26;
  $imagick = new Imagick();
  $color_transparent = new ImagickPixel(&#39;#ffffff&#39;); //transparent 透明色
  $imagick->newImage($width, $height, $color_transparent, &#39;jpg&#39;);
  //$imagick->borderimage(&#39;#000000&#39;, 1, 1);
  $style[&#39;font_size&#39;] = 12;
  $style[&#39;fill_color&#39;] = &#39;#000000&#39;;
  for($num= strlen($watermark); $num>=0; $num--){
   $this->add_text($imagick,substr($watermark, $num,1), 2+($num*8), 30, 1,$style);
   $this->add_text($imagick,substr($watermark, $num,1), 2+($num*8), 5, 1,$style);
  }
  //return;
  $style[&#39;font_size&#39;] = 20;
  $style[&#39;fill_color&#39;] = &#39;#FF0000&#39;;
  $style[&#39;font&#39;] = &#39;./msyh.ttf&#39;; ///微软雅黑字体 解决中文乱码
  //$text=mb_convert_encoding($text,&#39;UTF-8&#39;); //iconv("GBK","UTF-8//IGNORE",$text);
  $this->add_text($imagick,$text, 2, 20, 0,$style);
  header ( &#39;Content-type: &#39; . strtolower ($imagick->getImageFormat ()) );
  echo $imagick->getImagesBlob ();
}
// 添加水印文字
public function add_text(& $imagick, $text, $x = 0, $y = 0, $angle = 0, $style = array()) {
  $draw = new ImagickDraw ();
  if (isset ( $style [&#39;font&#39;] ))
   $draw->setFont ( $style [&#39;font&#39;] );
  if (isset ( $style [&#39;font_size&#39;] ))
   $draw->setFontSize ( $style [&#39;font_size&#39;] );
  if (isset ( $style [&#39;fill_color&#39;] ))
   $draw->setFillColor ( $style [&#39;fill_color&#39;] );
  if (isset ( $style [&#39;under_color&#39;] ))
   $draw->setTextUnderColor ( $style [&#39;under_color&#39;] );
  if (isset ( $style [&#39;font_family&#39;] ))
   $draw->setfontfamily( $style [&#39;font_family&#39;] );
  if (isset ( $style [&#39;font&#39;] ))
   $draw->setfont($style [&#39;font&#39;] );
  $draw->settextencoding(&#39;UTF-8&#39;);
  if (strtolower ($imagick->getImageFormat ()) == &#39;gif&#39;) {
   foreach ( $imagick as $frame ) {
    $frame->annotateImage ( $draw, $x, $y, $angle, $text );
   }
  } else {
   $imagick->annotateImage ( $draw, $x, $y, $angle, $text );
  }
}

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