help with getting unique sub arrays

[blackhawk]

what is the easiest way to get unqiue sub arrays based on date from within my larger array?  here is what i mean in detail.  I have an array that outputs this...

 

[0] => Array
        (
            [date] => 2010-11-02
            [time] => 7:00 p.m.
            [location] => Illinois
            [team1] => 
            [team1sc] => 
            [team2] => 
            [team2sc] => 
            [winner] => Illinois 
        )

    [1] => Array
        (
            [date] => 2010-11-02
            [time] => 7:15 p.m.
            [location] => Purdue
            [team1] => University of Indianapolis
            [team1sc] => 59
            [team2] => Purdue
            [team2sc] => 82
            [winner] => Purdue
        )

    [2] => Array
        (
            [date] => 2010-11-06
            [time] => 3:05 p.m.
            [location] => Southern Illinois
            [team1] => University of Indianapolis
            [team1sc] => 58
            [team2] => Southern Illinois
            [team2sc] => 65
            [winner] => Southern Illinois
        )

 

I don't need value [ 1 ] because value [ 0 ] already has the same date!  My goal is to get a list of all the unique [date]s from this entire multidemonsional array. (FYI - I know I will be loosing blocks of arrays that have duplicate dates - THATS OK).  But it's a bit of a struggle for me unique array sections out of this...any help or advice would be great!

 

thanks!

 

 

 

 

 

[xyph]

Something like this function

 

<?php

$array = array(
array('date' => '5-10','other' => 'somedata'),
array('date' => '5-10','other' => 'somedata'),
array('date' => '5-11','other' => 'somedata'),
array('date' => '5-12','other' => 'somedata'),
array('date' => '5-10','other' => 'somedata'),
array('date' => '5-12','other' => 'somedata')
);

$array = multiuniq( $array, 'date' );

print_r($array);

function multiuniq( array $array, $ukey ) {
$r = array();
$e = array();
foreach( $array as $arr ) {
	if( in_array($arr[$ukey],$e) )
		continue;
	$r[] = $arr;
	$e[] = $arr[$ukey];
}
return $r;
}

?>

[blackhawk]

thank you so much it works!! if you don't mind educating me for a quick sec. what is roles of....

 

1.

if( in_array($arr[$ukey],$e) )
		continue;
	$r[] = $arr;
	$e[] = $arr[$ukey];

 

what is the continue doing?... it looks like $ e is not in the $ array initially...

 

 

thanks again!!!

 

 

[xyph]

http://php.net/manual/en/control-structures.continue.php

 

It pretty much skips anything below it in the curly braces, and starts the loop over. Alternately, you could do something like

 

function multiuniq( array $array, $ukey ) {
$r = array();
$e = array();
foreach( $array as $arr ) {
	if( !in_array($arr[$ukey],$e) ) {
		$r[] = $arr;
		$e[] = $arr[$ukey];
	}
}
return $r;
}