Remove duplicate array by keyword

[darkminos]

Hi, another simple one which I can't work out:

 

I have a function to remove duplicates from an array, however I need to modify it to remove duplicates by 'title'

 

	if ( !function_exists( "arrayUnique" ) ){ 
	    function arrayUnique ( $rArray ){ 
	        $rReturn = array (); 
	        while ( list( $key, $val ) = each ( $rArray ) ){ 
	            if ( !in_array( $val, $rArray ) ) 
	            array_push( $rReturn, $val ); 
	        } 
	        return $rReturn; 
	    } 
	}

 

 

Array format:

Array (
[0] => Array ( 
[pic] => 1.jpg 
[link] => http://
[from] => shop 
[title] => title1
[cost] => 0.01 
[description1] => asd
[description2] => fgh
[description3] => jkl
[category] => LED )
[1] => Array ( 
[pic] => 1.jpg 
[link] => http://
[from] => shop 
[title] => title
[cost] => 0.01 
[description1] => asd
[description2] => fgh
[description3] => jkl
[category] => LED )
[2] => Array ( 
[pic] => 1.jpg 
[link] => http://
[from] => shop 
[title] => title1
[cost] => 0.01 
[description1] => asd
[description2] => fgh
[description3] => jkl
[category] => LED )

 

So... what the function needs to do is to look at the titles and remove duplicated entries containing the same title. (if this makes sense)

 

From the array above one of the entries containing '[title] => title1' should be removed leaving the following:

 

Array (
[0] => Array ( 
[pic] => 1.jpg 
[link] => http://
[from] => shop 
[title] => title1
[cost] => 0.01 
[description1] => asd
[description2] => fgh
[description3] => jkl
[category] => LED )
[1] => Array ( 
[pic] => 1.jpg 
[link] => http://
[from] => shop 
[title] => title
[cost] => 0.01 
[description1] => asd
[description2] => fgh
[description3] => jkl
[category] => LED )

 

Order is irrelevant.

[Barand]

try

function arrayUnique ($arr)
{
    foreach ($arr as $k=>$v) {
        foreach ($arr as $k2=>$v2) {
            if ($k2 <= $k) continue;
            if ($v2['title'] == $v['title']) {
                unset($arr[$k2]);
            }
        }
    }
    return $arr;
}

[darkminos]

Very interesting, I had almost exactly the same function before and changed it as it was messing up my array_multisort(), now I know it was due to lack of re-indexing after the duplicates are removed. Thanks for that