imagecharup
(PHP 4, PHP 5, PHP 7, PHP 8)
imagecharup — 垂直地画一个字符
说明
imagecharup(
resource
int
int
int
string
int
): bool
resource
$image
,int
$font
,int
$x
,int
$y
,string
$c
,int
$color
): bool
imagecharup() 将字符
c
垂直地画在
image
指定的图像上,位于
x
,y
(图像左上角为 0, 0),颜色为
color
。如果 font
为 1,2,3,4 或 5,则使用内置的字体。
示例 #1 imagecharup() 例子
<?php
$im = imagecreate(100,100);
$string = 'Note that the first letter is a N';
$bg = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0, 0, 0);
// prints a black "Z" on a white background
imagecharup($im, 3, 10, 10, $string, $black);
header('Content-type: image/png');
imagepng($im);
?>
参见 imagechar() 和 imageloadfont()。

User Contributed Notes 1 note
php at corzoogle dot com ¶
17 years ago
<?php
// incredibly, no one has added this.
// write a string of text vertically on an image..
// ;o)
$string = '(c) corz.org';
$font_size = 2;
$img = imagecreate(20,90);
$bg = imagecolorallocate($img,225,225,225);
$black = imagecolorallocate($img,0,0,0);
$len = strlen($string);
for ($i=1; $i<=$len; $i++) {
imagecharup($img, $font_size, 5, imagesy($img)-($i*imagefontwidth($font_size)), $string, $black);
$string = substr($string,1);
}
header('Content-type: image/png');
imagepng($img);
imagedestroy($img); // dudes! don't forget this!
?>