PHP: imagechar

imagechar

(PHP 3, PHP 4, PHP 5)

imagechar -- Draw a character horizontally

Description

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

imagechar() draws the first character of c in the image identified by image with its upper-left at x,y (top left is 0, 0) with the color color. If font is 1, 2, 3, 4 or 5, a built-in font is used (with higher numbers corresponding to larger fonts).

Пример 1. imagechar() example

<?php $im = imagecreatetruecolor(100, 100); $string = 'PHP'; $bg = imagecolorallocate($im, 255, 255, 255); $black = imagecolorallocate($im, 0, 0, 0); // prints a black "P" in the top left corner imagechar($im, 1, 0, 0, $string, $black); header('Content-type: image/png'); imagepng($im); ?>

imagechar

sw at profilschmiede dot de
20-Jun-2005 08:35


For the sake of completeness, here is an example for imagechar. 

The base-image automatically adjusts to the size and the height of the given string. Using the rand()-function the y-position of each char is slightly varied with every loop-run. You can easily rewrite the script to use a randomly generated string - the one given here just serves as an example.



<?php



$string = '1 2 3 4 5 6 7 8 9 A B C D E F G';

$font_size = 5;

$width=imagefontwidth($font_size)*strlen($string);

$height=imagefontheight($font_size)*2;

$img = imagecreate($width,$height);

$bg = imagecolorallocate($img,225,225,225);

$black = imagecolorallocate($img,0,0,0);

$len=strlen($string);



for($i=0;$i<$len;$i++)

{

    $xpos=$i*imagefontwidth($font_size);

    $ypos=rand(0,imagefontheight($font_size));

    imagechar($img,$font_size,$xpos,$ypos,$string,$black);

    $string = substr($string,1);    

    

}

header("Content-Type: image/gif");

imagegif($img); 

imagedestroy($img);

?>

imagearc

imagecharup

Last updated: Tue, 15 Nov 2005