What is wrong with this php line?
 

I getting error Undefined variable: cat in and i have no idea why.This is line which makes that problem:
Any idea what is wrong ?

yup you are using a reserved word as a variable cat is a reserved word in UNIX

$cat doesn't look to be defined (ie has never been called/assigned before) and you are running php with E_ALL

Also, to give the parser an easier time, add braces around your vars when inside double quotes if you absolutely want to have them inside the double quotes

ie

echo "<td valign='top'><p align='center'><a href='girls/{$rec->dirname}/{$rec->dirname}.html'><img title='{$cat} {$rec->name} Gallery' src='Models/{$rec->dirname}/1.jpg' alt='{$cat} {$rec->name} Gallery' width='150' height='200' border='1' /><br>{$cat} {$rec->name}</a></p></td>";


for parser speed inside/outside quotes, have a look at
http://riyono.com/archives/2004/09/3...p-application/

Yea, your code is all red and hard to read.

Ok here is clean copy pastE:
echo "<td valign='top'><p align='center'><a href='girls/$rec->dirname/$rec->dirname.html'><img title='$cat $rec->name Gallery' src='Models/$rec->dirname/1.jpg' alt='$cat $rec->name Gallery' width='150' height='200' border='1' /><br>$cat $rec->name</a></p></td>";

like I said, look in your php.ini for what your error settings are - they are probably E_ALL. Set them lower to remove the 'strict' coding messages showing.

echo "<td valign='top'><p align='center'><a href='girls/".$rec->dirname."/".$rec->dirname.".html'><img title='".$cat." ".$rec->name." Gallery' src='Models/".$rec->dirname."/1.jpg' alt='".$cat." ".$rec->name." Gallery' width='150' height='200' border='1' /><br>".$cat." ".$rec->name."</a></p></td>";

you can set "php_flag display_errors off" in htaccess to solve the warning

I second that.

php_flag display_errors off in htaccess works.I wonder is that only solution.

no, the other solution is to declare your variables before using them.
So, befre tht echo statement, write:
$cat = '';

and then your error will go away.

strict or not-so-strict. The choice is yours

Actually, the other solution is to learn what you're doing before you try to do it.

My brain is exploding.

Who cares about giving the parser an easier time? It exists to serve the programmer. I'm tired of all these people bitching about how PHP double quotes are slow. Using single quotes with the '.' operator maybe be faster but ask yourself this. By how much? Ok, even if it is 10 times faster how long do you think that translates to in actual time. Fractions of a nano second. It would have to be deep in an inner loop that is called 100,000+ times before the user would even notice a _slight_ difference. What's more important, having readable code, or shaving an additional 0.000000000001 seconds off the page loading time?

"Premature optimization is the root of all evil."

Now, I'm not one to say you should never optimize. I used to expand assembly code to half a dozen instructions when I could do it with 1 because the MUL instruction used to be really slow on the early x86 platforms. But only inside some kind of loop where it would mean a noticable difference to the user. There's a time and place for optimization but don't make your code more unreadable needlessly.