GD and Image 函数
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PHP手册

imagecharup

(PHP 4, PHP 5)

imagecharup垂直地画一个字符

说明

bool imagecharup ( resource $image , int $font , int $x , int $y , string $c , int $color )

imagecharup() 将字符 c 垂直地画在 image 指定的图像上,位于 xy(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。

Example #1 imagecharup() 例子

<?php

$im 
imagecreate(100,100);

$string 'Note that the first letter is a N';

$bg imagecolorallocate($im255255255);
$black imagecolorallocate($im000);

// prints a black "Z" on a white background
imagecharup($im31010$string$black);

header('Content-type: image/png');
imagepng($im);

?>

参见 imagechar()imageloadfont()


GD and Image 函数
在线手册:中文 英文
PHP手册
PHP手册 - N: 垂直地画一个字符

用户评论:

evolution at turkishboyz dot net (26-Feb-2006 10:33)

<?
$resim = imagecreatetruecolor(400,400);
$renk1 = imagecolorallocate($resim,222,222,222);
$renk2 = imagecolorallocate($resim,111,111,111);
$renk3 = imagecolorallocate($resim,123,123,123);
$yazi  = "Merhaba Dunyalilar";
$x     =strlen($yazi);
for($a=1;$a<=$x;$a++){
    imagecharup($resim,10,20,20*$a,$yazi,$renk2);
    $yazi = substr($yazi,1);
    }
imagejpeg($resim);
imagedestroy($resim);
?>

jansafar at volny dot cz (02-Dec-2005 06:18)

I'm using imagestringup() function to write text upwards.

php at corzoogle dot com (17-Jun-2005 12:28)

<?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!
?>