PHP imageline() imagepng() not working

Asgarnian · 09:30 AM

I have this code:

<html>
<?php
header('Content-type: image/png');
$png_image = imagecreate(150, 150);
imagecolorallocate($png_image, 15, 142, 210);
$black = imagecolorallocate($png_image, 0, 0, 0);
imageline($png_image, 0, 0, 150, 150, $black);
imagepng($png_image);
imagedestroy($png_image);
?>
</html>

And this is the result that webpage shows: http://asgarnian.net78.net/drawimage.php

Why is it not working, I checked this Host Settings and it does have GD support. What am I missing? Are there any settings I need to set?

This is in my php info:

'--with-gd=/usr' '--enable-gd-native-ttf' '--with-jpeg-dir=/usr' '--with-png-dir=/usr' '--with-zlib-dir=/usr' '--with-xpm-dir=/usr' '--with-ttf=/usr' '--with-freetype-dir=/usr' '--with-t1lib=/usr' '--with-gettext=/usr' '--with-gmp=/usr'

so I guess it should work? also the Php code was directly copied from some php tutorial site...

Asgarnian · 02-09-2012, 10:52 AM

Well i got it to work, but doesn't work ok. There Must be no empty Lines before <?php.
Also it doesn't work if I put HTML tags inside. it also doesn't work if I put anything before that header( ). it works if I put echo "blablabla"; after the abbove code, but the "blablabla" doesn't get echoed.

Does anyone knows how to get around it? I want to display certain php drawn images in the middle of other context on my page.

biazzotto · **Create two files -** 02-09-2012, 12:51 PM

Hi Asgarnian,

You can create two files, one will be the webpage and the other will be the image.

Example:

index.php
<html>
<body>
<?php echo "blablabla"; ?>
<img src="image.php">
</body>
</html>

image.php
<?php
header('Content-type: image/png');
$png_image = imagecreate(150, 150);
imagecolorallocate($png_image, 15, 142, 210);
$black = imagecolorallocate($png_image, 0, 0, 0);
imageline($png_image, 0, 0, 150, 150, $black);
imagepng($png_image);
imagedestroy($png_image);
?>

Asgarnian · 02-09-2012, 01:40 PM

Yes I have figured it out thanks to this post: http://stackoverflow.com/questions/3...ontains-errors, just a few minutes before your Reply biazzotto.

Thanks a lot anyway! The Solution works perfectly