Output a PNG image from a PHP include file

Question

I have a include file called sign.php which has some code -

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

A file where I want to display this image - index.php

......
<what comes here?> include('../sign.php');
.....

How would I display it? Directly echo-ing it doesn't work!

Thanks.

MORE CODE:

sign.php

    .....
   {
    imagettftext($im, 22, 0, 240, 43 , $text_color, $font, $text_god);
    imagettftext($im, 22, 0, 241, 44 , $text_color, $font, $text_god);
}
imagettftext($im, 22, 0, 60, 42 , $text_color, $fontname, $text_username);
     imagettftext($im, 16, 0, 230, 72 , $text_color, $font, $text_kills);
imagettftext($im, 16, 0, 230, 102 , $text_color, $font, $text_deaths);
imagettftext($im, 16, 0, 230, 132 , $text_color, $font, $text_rwon);

imagettftext($im, 16, 0, 365, 72 , $text_color, $font, $text_alevel);
imagettftext($im, 16, 0, 365, 102, $text_color, $font, $text_dlevel);
imagettftext($im, 16, 0, 365, 132 , $text_color, $font, $text_rlost);
imagettftext($im, 16, 0, 365, 162 , $text_color, $font, $text_money);   // Prints the money in the picture. 

imagecopymerge($im, $skinImg, 505, 56,0,0,55,99,100);

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

imagepng($im); 

    imagedestroy($im);

index.php

    .......
    <?php echo '<img src="../signature/sign.php" />'; ?>
    .......

Still doesn't work!

EDIT:

index.php

            include('../signature/sign.php');

            echo '<img src="data:image/png;base64,' + base64_encode($stringdata) + '">';

sign.php

http://pastebin.com/uz1U3V4R

is sign.php accessible through the browser? I mean, if you manually enter the URL, does it display the image? — Ephi Gabay, Feb 09 '14 at 15:24
No actually - it doesn't, because it requires a variable from index.php! — Rajat Pawar, Feb 09 '14 at 15:25
Oh.. You didn't mention it in your question.. I'll edit my answer, check it out in a couple of seconds — Ephi Gabay, Feb 09 '14 at 15:26
[**cannot-modify-header-information-headers-already-sent**](http://stackoverflow.com/questions/21624838/php-error-warning-cannot-modify-header-information-headers-already-sent-by/21624855#21624855) — Alireza Fallah, Feb 09 '14 at 15:48

Ephi Gabay · Answer 1 · 2014-02-09T15:57:08.537

3

This happens because imagepng directly outputs the content of the image to the browser. You should save the content of the image into a variable like this in sign.php:

... 
imagecopymerge($im, $skinImg, 505, 56,0,0,55,99,100);  

ob_start();
imagepng($im);
$stringdata = ob_get_contents();
ob_end_clean();

imagedestroy($im);   
...

And then display it in your index.php like this:

<?php
    include('sign.php');
    echo '<img src="data:image/png;base64,' . base64_encode($stringdata) . '">';
?>

edited Feb 09 '14 at 15:57

answered Feb 09 '14 at 15:19

Ephi Gabay

938
7
27

Can you post some more code from index.php? @RajatPawar – Ephi Gabay Feb 09 '14 at 15:20
@RajatPawar Can you check whether my new solution works? – Ephi Gabay Feb 09 '14 at 15:29
I exactly did what you said, but it displays a lot of gibberish now! Something like - "�PNG IHDR��G IDATx�l�ْ,Yv��b��uk�.tChB�D %3��E�?�/��/��/4�d��PF� ��F�p��S�>�ao=xd� ��" – Rajat Pawar Feb 09 '14 at 15:31
Sorry for being so naive - but again, the code you gave simply outputs '0'. Thanks! – Rajat Pawar Feb 09 '14 at 15:48
Can you post your index.php? – Ephi Gabay Feb 09 '14 at 15:52
Posted in main question – Rajat Pawar Feb 09 '14 at 15:54
1

+ shoud be . echo ''; – Shahrokhian Feb 09 '14 at 15:55
1

@RezaSh Thanks :) All this writing on several programming languages may be very confusing.. Edited my answer – Ephi Gabay Feb 09 '14 at 15:56
Thank you ! Tons of love from here. Works. Thank you - Ephi Gabay, RezaSh, code360, Alireza and stackoverflow for such quick answers! – Rajat Pawar Feb 09 '14 at 15:57

score 0 · Answer 2 · edited Feb 09 '14 at 15:53

0

<img src='< ?php echo 'data:image/png;base64,' . base64_encode(file_get_contents('img.png')) ; ?> '>


<img src='<?php include("img.png"); ?>

This should work for you.

edited Feb 09 '14 at 15:53

sjngm

12,423
14
84
114

answered Feb 09 '14 at 15:22

Ferrakkem Bhuiyan

2,741
2
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38

score 0 · Answer 3 · edited Jun 20 '20 at 09:12

According that you said you tried <img src='sign.php'> and its not working, I guess something is wrong with set the header,Consider that

No output before sending headers

Functions that send/modify HTTP headers must be invoked before any output is made.

Some functions modifying the HTTP header are:

Output can be:

Unintentional:
- Whitespace before <?php or after ?>
- UTF-8 Byte Order Mark
- Previous error messages or notices
Intentional:
- print, echo and other functions producing output (like var_dump)
- Raw <html> areas before <?php code.

Thanks for answering - sign.php won't work directly as it uses a variable in index.php! — Rajat Pawar, Feb 09 '14 at 15:32

Output a PNG image from a PHP include file

3 Answers3

No output before sending headers