浏览器无法显示图片

Question

class Image{
   //内存中的图片
   private $image;
  //图片的基本信息
   private $info;
   //打开一张图片，读取到内存中
   public function __construct($src){
       $info = getimagesize($src);
       $this->info=array(
           'width'=>$info[0],
           'height'=>$info[1],
           'type'=>image_type_to_extension($info['2'],false),
           'mime'=>$info['mime']
       );
      $fun = "imagecreatefrom{$this->info['type']}";
      $this->image=$fun($src);
   }
   //操作图片(压缩图片)
    public function thumb($width,$height){
        $image_thumb = imagecreatetruecolor($width,$height);
        imagecopyresampled($image_thumb,$this->image,0,0,0,0,$width,$height,$this->info['width'],$this->info['height']);
      imagedestroy($this->image);//销毁原图像
       $this->image = $image_thumb;//用压缩图片代替内存中原图像
   }
   //操作图片(添加文字水印)
    public  function fontMark($content,$font_url,$size,$color,$local,$angle){
        $col=imagecolorallocatealpha($this->image,$color[0],$color[1],$color[2],$color[3]);
        imagettftext($this->image,$size,$angle,$local[x],$local[y],$col,$font_url,$content);
    }
   //在浏览器中输出图片
   public function show(){
       header("Content-type:".$this->info['mime']);
       $funs = "image{$this->info['type']}";
       $funs($this->image);
   }
   //把图片保存在硬盘里
   public function save($newname){
       $funs = "image{$this->info['type']}";
       $funs($this->image,$newname.'.'.$this->info['type']);
   }
   //销毁图片
   public function __destruct()
   {
       imagedestroy($this->image);
   }

            
    }
    
    <?php 
    require "image.class.php";
    $src='timg.jpg';
    $content="欢迎来到南充农商网";
    $font_url="simsun.ttc";
    $size=20;
      $color=array(
         0 => 255,
         1 => 255,
         2 => 255,
         3 => 20
     );
     $local=array(
        'x'=>20,
        'y'=>30
      );
    $angle=10;
    $image=new Image($src);
    $image->fontMark($content,$font_url,$size,$color,$local,$angle);
    $image->show();
?>

Answer 1

数组引用加引号，我测试过的imagettftext($this->image,$size,$angle,$local['x'],$local['y'],$col,$font_url,$content);