question on while loop vs. foreach loop

[sfullman]

I am spoiled in using foreach() with a known array. But now I'm coming into a situation where, for the sake of subtotal breaks, I need to know the NEXT record if it's present also. I want to see if the code below is optimal. The table row you see is NOT any resemblance of the table row(s) I'll be outputting, just a way to see that yes, currently I'm getting both the current and next record, or nothing at the end.

Are there any "gotchas" in my coding and is there any more elegant way to generate $record and $nextRecord in a loop? Thanks, my appreciation to those of you who know the internals of PHP so well.

$records=array(
	array(
		'country'=>'USA',
		'state'=>'Texas',
		'city'=>'Houston',
		'address'=>'123 Main St.',
		'total'=>45.00
	),
	array(
		'country'=>'USA',
		'state'=>'Texas',
		'city'=>'Houston',
		'address'=>'777 Elbow Grease',
		'total'=>175.00
	),
	array(
		'country'=>'USA',
		'state'=>'Texas',
		'city'=>'Austin',
		'address'=>'334 Emmy Dr.',
		'total'=>391.00
	),
	array(
		'country'=>'USA',
		'state'=>'Texas',
		'city'=>'Austin',
		'address'=>'1204 Marlton St.',
		'total'=>485.00
	)

);
?><table border="1"><?php
while(true){
	$i++;
	if(is_array($nextRecord)){
		$record=$nextRecord;
		@$nextRecord=current(each($records));
	}else{
		@$record=current(each($records));
		@$nextRecord=current(each($records));
	}

//just shows that I do have the current and next record
?><tr>
<td><?php
echo '<pre>';
print_r($record);
echo '</pre>';
?>
</td>
<td><?php
echo '<pre>';
print_r($nextRecord);
echo '</pre>';
?>
</td>
</tr><?php
if(!$nextRecord)break;
}
?></table><?php

[bradgrafelman]

Since $records is a (sequential) numerically indexed array, you could simply use a [man]for/man loop:

for($i = 0; isset($record[$i]); $i++) {
    // code for each record here.

// to check if there is a "next" record:
if(isset($record[$i+1])) {
    // "next" record exists
}
}

[sfullman]

the keys may not always be sequential or even numeric. Assuming that, is there a better way than what I have? thank you for the input. Believe me it would be NICE if the keys were sequential..

[bradgrafelman]

Hm...

for($i = 0, $keys = array_keys($record); isset($keys[$i]); $i++) { 
    // code for each record here.
    // current record is $record[$keys[$i]] 

// to check if there is a "next" record: 
if(isset($keys[$i+1])) { 
    // "next" record exists 
    // reference it using: $record[$keys[$i+1]]
} 
} 

[NogDog]

How about something like:

while(($record = current($records)) !== false)
{
   $nextRecord = next($records); // advances array pointer
   if($nextRecord === false)
   {
      // do stuff if no next record
   }
   else
   {
      // do stuff if there is a next record
   }
}

[Weedpacket]

How about:

$current_record = array_shift($records);
foreach($records as $next_record)
{
    // .... If you're here then there is a next record
    // (it's in $next_record, funnily enough)
    // You also have the record immediately before the next record - in other
    // words, the current record - in $current_record.
    //
    // Do stuff, and finish off the loop with:
    $current_record = $next_record;
}
// $current_record now contains the last record in the array.