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

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

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