recursive multiple match in multidimensional php array

Question

I need to match all "keywords" in a multidimesional array:

$array = array(
    'green' => 'keyword',
    'orange',
    'keyword',
    'black' => array(
        'purple' => 'text',
        'brown',
        'pink' => 'keyword'
    ),
    'white' => array(
        'red',
        'yellow' => 'keyword',
        'blue'
    ),
    'violet',
    'gray'
);

Then I would like to access the match results like:

$matches[0][0]
$matches[2]
$matches[3][2]
....

What should I use? I tried with array_filter but doesn't work.. also it might have to be recursive

function findInArray($array){
    $array = array_filter($array, function($array){
        return ($array == 'keyword');
    });
    return $array;
}

you should add the code wherein you are using it too, add the usage with the input array — Kevin
– Kevin, Commented May 6, 2016 at 2:54

Murad Hasan · Accepted Answer · 2016-05-06 04:25:10Z

1

You can did the thing by using array_filter.

Online check 3v4l.org

$arr = array();

$str = 'keyword';
$arr[] = array_filter($array, function($var) use ($str) {
            global $arr;
            if(is_array($var)){             
                $arr[] = array_filter($var, function($var2) use ($str) {
                    return preg_match("/$str/i", $var2);
                });
            }else{
                return preg_match("/$str/i", $var);
            }           
        });

function getL2Keys($array){
    $result = array();
    foreach($array as $sub) {
        $result = array_merge($result, $sub);
    }        
    return $result;
}

$arr = getL2Keys($arr);

Result:

Array
(
    [pink] => keyword
    [yellow] => keyword
    [green] => keyword
    [0] => keyword
)

edited May 6, 2016 at 4:25

answered May 6, 2016 at 2:53

Murad Hasan

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4 Comments

neoDev Over a year ago

can you add the $array example? It is not working with my array

Murad Hasan Over a year ago

so please post your array.

Murad Hasan Over a year ago

@neoDev, I am working on it. try the current script.

Murad Hasan Over a year ago

@neoDev, Done the script.

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