How can I stop a function in PHP?

When comparing data I want to stop the function on a hit.



Function compare($data) {

For ($n=1; $n<=10000; $n++) {

For ($m=1; $m<=10000; $m++) {

If $data[$n]==data[$m] {

Piet wrote:
> How can I stop a function in PHP?
>
> When comparing data I want to stop the function on a hit.
>
>
>
> Function compare($data) {
>
> For ($n=1; $n<=10000; $n++) {
>
> For ($m=1; $m<=10000; $m++) {
>
> If $data[$n]==data[$m] {
>
> .
>
> Exit function, or exit for.. --- but how?
>
> }
>
> }
>
> }
>
> How can I avoid comparing 10000 * 10000 times?
>
>
>
> Thanks
>
>
>
> Piet
>
>

Among other ways - return can return from a function; break can break a loop.
Or you can use a flag variable to indicate you wish to exit the loop.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================

Piet wrote:
> How can I stop a function in PHP?
>
> When comparing data I want to stop the function on a hit.
>
>
>
> Function compare($data) {
>
> For ($n=1; $n<=10000; $n++) {
>
> For ($m=1; $m<=10000; $m++) {
>
> If $data[$n]==data[$m] {
>
> .
>
> Exit function, or exit for.. --- but how?
>
> }
>
> }
>
> }
>
> How can I avoid comparing 10000 * 10000 times?
>
>
>
> Thanks
>
>
>
> Piet
>
>

(Ignore previous message - though I was in a different group).

Depends in what language you're using to program. Check newsgroup for the
language you're using.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================

Piet wrote:
> How can I stop a function in PHP?
>
> When comparing data I want to stop the function on a hit.
>
>
>
> Function compare($data) {
>
> For ($n=1; $n<=10000; $n++) {
>
> For ($m=1; $m<=10000; $m++) {
>
> If $data[$n]==data[$m] {

Seems like you could load the data into a MySQL table, and use:

SELECT val, COUNT(val)
FROM mytable
GROUP BY val
HAVING COUNT(val) > 1

This will be very quick if you put an index on val.

(I know this isn't answering your question directly, but this is a MySQL
newsgroup, so I'm trying to use MySQL in the solution! ;-)

Regards,
Bill K.