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Why doesn't this PHP code create a valid PNG image?

$c = $record['corrects'];
$i = $record['incorrects'];

if($c == 0 && $i == 0)
{
    $image = imagecreatetruecolor(200,80);

    $white = imagecolorallocate($image,255,255,255);
    $red = imagecolorallocate($image,255,0,0);

    imagefilledrectangle($image,0,0,199,79,$white);

    $text = 'Quiz cancelled!';

    $box = imageftbbox(10,0,'verdana.ttf',$text);

    $x = imagesx($image)/2 - abs($box[2] - $box[0])/2 - 5;

    $y = imagesy($image)/2 - abs($box[5] - $box[3])/2 - 5;

    imagefttext($image,10,0,$x,$y,$red,'verdana.ttf',$text);

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

    imagepng($image);
    imagedestroy($image);

    exit();
}
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3 answers


Comment out the calls to imagepng () and header () and view the output in your browser to see if any errors are being generated.



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I tried it and it works. This produced a chunk of red text saying "Poll canceled!"

Maybe you should check if $ c and $ i are really 0?

I assume you have <? php and? > tags at the beginning and end of the file?



Edit: also is the ttf font file in the right place?

It might help if you can give a little more information: is this the browser giving the error? Or just show nothing?

Ben

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As already stated, the question is a bit fragmented in detail.

Is the GDFONTPATH ​​environment variable set correctly?

<?php
// Set the enviroment variable for GD
putenv('GDFONTPATH=' . realpath('.'));

(from uk.php.net/imagefttext )

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