cannot modify header information already sent

[seco]

Hi

i try this code from php.net about writting text on image

<?php
header("Content-type: image/png");

// Create the image
$im = imagecreatetruecolor(400, 30);

// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 399, 29, $white);

// The text to draw
$text = 'Testing...';
// Replace path by your own font path
$font = 'arial.ttf';

// Add some shadow to the text
imagettftext($im, 20, 0, 11, 21, $grey, $font, $text);

// Add the text
imagettftext($im, 20, 0, 10, 20, $black, $font, $text);

// Using imagepng() results in clearer text compared with imagejpeg()
imagepng($im);
imagedestroy($im);
?>

 

this code gives me warning says "cannot modify header information because is already sent by line 2"

 

any help how to make this code works?

 

thanks in advance.

 

[discomatt]

Probably means you have a line break before your opening <?php tag.

[seco]

the code i use is as you see

i try

<?php header("Content-type: image/png"); like that but nothing changed

 

all the page contain is this code only

[kenrbnsn]

What type of editor are you using to create the script? Also, what character set are you using to store it. If it is UTF8, there will be a weird character in front of the <?php which gets sent to the browser as output and would generate that message.

 

Ken