[RESOLVED] Some help getting two arrays to line up and print out

[vaaaska]

I'm having a hard time getting this to print...here's how it's setup...

$top = array('a','b','c');
$bottom = array(
array('123','a'),
array('456','a'),
array('678','c'),
array('234','b'),
array('435','a'),
array('423','c'));

I'm trying to output a loop based upon the members of $top and for each $top output the values $bottom where the second [1] element in each array equal $top.

Something along the lines...well, something...this isn't work for the obvious reason but I'm not quite sure how to tackle it:

foreach ($top as $atop) {

  foreach ($bottom as $abottom) {

if ($atop = $abottom[1]) {

  $line .= $atop . ' - ' . $abottom[1];

}
  }

$out = $line;

}

Ack...I hope that's not confusing. I have to reiterate the same array ($abottom) three times and...is that possible? It will iterate just fine through $atop. The other issue is that I can't quite figure out a decent way to get my $line and move it to $out properly.

Tips?

[devinemke]

$top = array('a','b','c');

$bottom = array(
array('123','a'),
array('456','a'),
array('678','c'),
array('234','b'),
array('435','a'),
array('423','c')
);

foreach ($bottom as $value)
{
	$top_bottom[$value[1]][] = $value[0];  

}

ksort($top_bottom);

foreach ($top_bottom as $key => $value)
{
	echo 'top = ' . $key . '<br>bottom(s) = ';
	echo implode(', ', $value);
	echo '<br><br>';
}

[vaaaska]

It always seems easy in theory. Four hours a pushing arrays around every which way and it's done. Thanks to your advice...

😉