Logic help....verify 2 arrays contents

[chopstick]

I can't seem to get past how to do this....

what I am doing is reading a directory and dropping it into an array called $file_array ....now in my database I have a mirror of what's in the directory....except that new files will get added often.....so I want to make a function that will readdir and check it against the database, if a file isn't in the database ....add it ....otherwise continue on.

I have tried nested for loops but I don't seem to be getting anywhere with them....maybe I have been looking at the code too long.

Thanks for your help in advance....

[[deleted]]

Post your code and we'll have a look

---

A forum, a FAQ, what else do you need?

Time to YAPF!: http://www.hvt-automation.nl/yapf/

[chopstick]

this doesn't work but you can see what im trying to do:

<pre>
for ($a = 0; $a < count($file_array); $a++) {
for ($b = 0; $b < count($tracks); $b++) {
if ($file_array[$a] == $tracks[$b]) {
echo "exists: ".$file_array[$a]."<BR>";
} else {
echo "non-exist: ".$tracks[$b]."<BR>";
}
}
}
</pre>

[Anon]

Why not use array_diff?
http://www.php.net/manual/en/function.array-diff.php

Diego

[[deleted]]

Yup, looks like an array_diff or intersect thingy...

[chopstick]

Ha....so simple...I feel so newbie....I was looking at the manual too hard (well looking at the same functions) ...thanks this works perfect. It returns an array with the values that I was looking for......purrrfect