cron job + PHP, why would I get duplicates?

[guest2013-1]

I have a PHP script that runs through my database, and as it does it's work, it does a log (to a txt file) of it's progress.

When i cron job it (it runs 30 16 * * * blabla blabla.php, supposed to be 16:30 every day), it appears that eventually it starts spitting out duplicate lines in the log file.

Why is that? From what I understand it's not running the same script twice, only once in the cron job. and the duplicate entries don't make sense since everything is processed correctly (from what I can see)

Any ideas?

 

[Venom Rush]

Without looking at the code there's no way of telling what the issue could be.

 

[guest2013-1]

Without looking at the code there's no way of telling what the issue could be.

Well it's pretty simple.

function log_error($input){
//write to the file
}

And as the script executes at certain points I do log_error("sup, here we are now"); type calls. Linear top to bottom. It processes 1 record at a time, and since 1 database record = 1 log_error call, I can't figure out why there'd be multiple lines for the same record. Not to mention a criss cross between records, so before record 1's "end" log_error is written, record 2 started already.

Is it a buffer issue perhaps?

 

[Venom Rush]

Like I said, without seeing your code there's no way anyone can help you. You might have "function log_error($input)" placed somewhere in your code that's causing it to run twice. I have no idea.

 

[Venom Rush]

If you're apprehensive about posting your code then pm it to me

 

[Nod]

Check to see that it is only called once.
Make sure that you reset the variable to an empty string, just in case you append to it b mistake.