Debugging Image Creation

[aaron_karp]

I'm trying to create a dynamic image on one of my pages
<IMG SRC="drawgraph.php?x=600&y=800&morevariables..">

drawgraph.php contains lots of code, database calls, loops, functions, and what not. The problem is that my image isn't getting drawn, but I can't debug my code because I can't see any error messages.

One though is to use mail() to send myself little checks from various points in the script, but I was wondering if you guys know any ways to actually see error messages from this page.

Thanks.

[olaf]

use at the beginning of your "drawgraph.php"

this code :

error_reporting (E_ALL);

and you will see all errors....

🙂

[aaron_karp]

That didn't work. Since the drawgraph.php script is called from the HTML image tag on another page, if drawgraph.php fails, all that appears on the other page is one of those "image not available" boxes (white with the red x).

😕

[olaf]

you must debug the script alone without the html...
the image tag didn't know so much of php
😃