php使用Imagick實現添加文字水印的圖片功能

使用Imagick 生成圖片

解決了圖片寫中文文字亂碼問題，添加支持的字體

public function getPic(){

  header('Content-Type: text/html; charset=utf-8');

  $text = '中糧屯河（sh600737）';//中糧屯河（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'; ///微軟雅黑字體 解決中文亂碼

  //$text=mb_convert_encoding($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 );

  }

}