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  • imagestringup()

    (PHP 4, PHP 5, PHP 7)

    垂直地画一行字符串

    说明

    imagestringup(resource $image,int $font,int $x,int $y,string $s,int $col): bool

    imagestring()用$col颜色将字符串$s垂直地画到$image所代表的图像的$x,$y座标处(图像的左上角为 0, 0)。如果$font是 1,2,3,4 或 5,则使用内置字体。

    参见imageloadfont()。

    function imagestringdown(&$image, $font, $x, $y, $s, $col)
    {
      $width = imagesx($image);
      $height = imagesy($image);
      
      $text_image = imagecreate($width, $height);
      $white = imagecolorallocate ($text_image, 255, 255, 255);
      $black = imagecolorallocate ($text_image, 0, 0, 0); 
      $transparent_colour = $white;
      if ($col == $white)
       $transparent_color = $black;
     
      imagefill($text_image, $width, $height, $transparent_colour);
      imagecolortransparent($text_image, $transparent_colour);
     
      imagestringup($text_image, $font, ($width - $x), ($height - $y), $s, $col);
      imagerotate($text_image, 180.0, $transparent_colour);
     
      imagecopy($image, $text_image, 0, 0, 0, 0, $width, $height);
    }

    上篇:imagestring()

    下篇:imagesx()