如何在数组中仅显示匹配关键字

Question

This is my array output

Array
(
    [0] => Array
        (
            [tweet_text] => Fedora 16 "Verne" released! http://t.co/lECbdzE0 #Fedora #Linux
        )

    [1] => Array
        (
            [tweet_text] => Ubuntu 11.10 "Oneiric Ocelot" released! #Ubuntu #Linux
        )

)

Example to find Ubuntu keyword. From the current array how do I filter to show only

Array ( [1] => Array (
            [tweet_text] => Ubuntu 11.10 "Oneiric Ocelot" released! #Ubuntu #Linux
        )   
)

The code

$keywords = array('Ubuntu');

foreach ($keywords as &$keyword) {
    $keyword = preg_quote($keyword);
}

$regex = "/(" . implode('|', $keywords) . ")/";
$check = preg_match($regex, $anArray);

if($check == 1)  {
 // here I want to display only Ubuntu
}

Let me know

Answer 1

preg_grep — Return array entries that match the pattern

example:-

$arr = array('k'=>'ubuntu', 'j'=>'ubuntu1', 'n'=>'fedorra');
$matches = preg_grep('/ubuntu/i', $arr);

if you original source is an multi-dimensional array,
you can try :-

 $cmp = array();
 foreach ($src as $key=>$arr)
 {
   $cmp[$key] = $arr['tweet_text'];
 }
 $matches = preg_grep('/ubuntu/i', $cmp);

 // $matches will be an associate array contains the matches
 // and $matches and $src are using same index key