- PHP 手册
- 函数参考
- 图像生成和处理
- GD
- GD 和图像处理 函数
imagestringup
(PHP 4, PHP 5, PHP 7, PHP 8)
imagestringup — 垂直地画一行字符串
说明
imagestringup(resource
$image
,int
$font
,int
$x
,int
$y
,string
$s
,int
$col
): bool
imagestring() 用 col
颜色将字符串 s
垂直地画到 image
所代表的图像的 x
, y
座标处(图像的左上角为 0, 0)。如果 font
是 1,2,3,4 或 5,则使用内置字体。
参见 imageloadfont()。
User Contributed Notes 1 note
up down 3 Anonymous ¶19 years ago
function imagestringdown(&$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);
}
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官方地址:https://www.php.net/manual/en/function.imagestringup.php