PHP foreach select range to show

Would I need to say $i++ somewhere?

I am trying a similar way but the issue is that calling to load each '$customer' is very slow, so I have 20k results and it has to load the first 500 each time I do that. It would be great if I could just start at 500

Maybe there is a way to delete the first 500 out of the $customers array? then I could just tell it to stop when $i = 1000

Is that possible?

Yes, array_slice() can remove parts of an array.

Thanks Ray... did that at apparently it is an object, can you do the same with an object?

$customers = array_slice($customers, 0, 5);

You might also consider a for() statement.
http://php.net/manual/en/control-structures.for.php

Something like this:

for($i = 500; $i <= 1000; $i++) {
    /* Do Stuff */
}

Select allOpen in new window

No, you cannot use PHP array functions on objects directly, but you can often cast objects as arrays and then use array functions.  You can find the data types with var_dump()

Okay, trying to work with Magentos objects to update 20k passwords but it keeps timing out, it is super slow.

I figured if I could do 500 at a time it would be great, but it had to load the first 500 to get to the second 500, takes forever.

I was hoping that I could just start at the 500th and run to the 1000th, then 1000th to 1500th

Forgive me yes you had to put $i++

You can increase the PHP time limit.  Try putting set_time_limit(2) inside the loop.  But I'm concerned that 20K of anything should not be too slow -- 20K is not a big number in computer science.  Are there any things that slow this process down unnecessarily?

I agree, 20k should be lightening.

Do you see any red flags in my code below? I was just running 50 for the test, it seems to take about 30 seconds for 50.

// LOAD CUSTOMER COLLECTION
$customers = Mage::getModel('customer/customer')->getCollection();

// LOAD VARIABLES
$count = $_GET['count'];
$countplus = $count + 50;
$basenumber = '0';

// LOAD FILE
$file = 'account_passwords.csv';
$current = file_get_contents($file);

// LOAD CUSTOMER INFO
foreach ($customers as $customer){
	
	if($basenumber > $count) {
		if($basenumber > $countplus) {
			file_put_contents($file, $current);
			echo '<script type="text/javascript">
				window.location = "/resetallpasswords.php?count='.$countplus.'"
				</script>';
				echo 'orange';
				exit();
		} else {
			$password = strtoupper(substr( $customer->getEmail(), 0, 3)).rand(111,999);
			$customer->setPassword($password)->save();
			$current .= $customer->getGroupId(). ",". $customer->getEmail(). ",". $customer->getPassword()."\n";
		}
	}
	
	$basenumber++;	
} 

Select allOpen in new window

Thanks for the help guys, I could not get it to work, ended up just inserting it all into the system using 2 scripts, one to make the passwords then another to add them in the db.

Thank you for the help, I learned some stuff