imagestringup

(PHP 4, PHP 5, PHP 7)

imagestringup — 垂直地画一行字符串

说明

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

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() 。

用户评论:

[#1] [2002-12-13 05:19:22]

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);
}