imagestringup

(PHP 4, PHP 5, PHP 7)

imagestringup — 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。

User Contributed Notes

13-Dec-2002 05:19


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);

}