filtrar array de manera recursiva

[matt_1985]

Hola tengo un array con cierta estructura donde quiero filtrar solo los que contienen 'survey78399' , pero en algunos casos no logro hacerla funcionar.

la estructura del array:

Código PHP:

  Array
(
    [0] => Array
        (
            [email] => [e-mail]
            [timestamp] => 1337966815
            [category] => survey78399
            [event] => open
        )
 
    [2] => Array
        (
            [email] => [e-mail]
            [timestamp] => 1337966855
            [category] => Array
                (
                    [0] => survey78399
                    [1] => transactional
                )
 
            [event] => spam
        )
 
    [3] => Array
        (
            [email] => [e-mail]
            [timestamp] => 1337966899
            [category] => Array
                (
                    [0] => survey78399
                    [1] => transactional
                )
 
            [event] => open
        )
 
    [4] => Array
        (
            [sg_event_id] => sendgrid_internal_event_id
            [sg_message_id] => sendgrid_internal_message_id
            [ip] => 255.255.255.255
            [useragent] => Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Version/7.0 Mobile/11D257 Safari/9537.53
            [event] => click
            [email] => [e-mail]
            [timestamp] => 1249948800
            [url] => http://yourdomain.com/blog/news.html
            [url_offset] => Array
                (
                    [index] => 0
                    [type] => html
                )
 
            [unique_arg_key] => unique_arg_value
            [category] => Array
                (
                    [0] => category1
                    [1] => category2
                )
 
            [newsletter] => Array
                (
                    [newsletter_user_list_id] => 10557865
                    [newsletter_id] => 1943530
                    [newsletter_send_id] => 2308608
                )
 
            [asm_group_id] => 1
        )
 
) 
   

mi codigo :

Código PHP:

   
function debug($valor)
{
    echo "<pre>";
    print_r($valor);
    echo "</pre>";
    exit;
}
 
$search = 'survey78399';
         
        $callback = function($item) use (&$callback, &$search) {
            if (is_array($item)) {
                return array_filter($item, $callback);
            }else {
                return $item == $search;
            }
        };
 
        $filtered = array_filter($arr, $callback);
 
 
        debug($filtered); 
   

Saludos

[hhs]

Solo cambia la condición a === entre $item y $search

Código PHP:

$array = [
    0 =>
        [
            "email" => "[email protected]",
            "timestamp" => "1337966810",
            "category" =>
                [
                    0 => "survey78399_",
                    1 => "transactional",
                ],
 
            "event" => "delivered",
        ],
 
    1 =>
        [
            "email" => "[email protected]",
            "timestamp" => "1337966855",
            "category" =>
                [
                    0 => "survey78399",
                    1 => "transactional",
                ],
 
            "event" => "spam",
        ],
 
    2 =>
        [
            "email"=> "[email protected]",
            "timestamp" => "1337966899",
            "category" =>
                [
                    0 => "survey8888",
                    1 => "transactional",
                ],
 
            "event" => "open",
        ],
 
    3 =>
        [
            "email" => "[email protected]",
            "timestamp" => "1337966899",
            "category" => "survey78399",
            "event" => "open",
        ],
    4 =>
        [
            "sg_event_id" => "sendgrid_internal_event_id", 
            "sg_message_id" => "sendgrid_internal_message_id", 
            "ip" => "255.255.255.255", 
            "useragent" => "Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Version/7.0 Mobile/11D257 Safari/9537.53", 
            "event" => "click", 
            "email" => "[email protected]", 
            "timestamp" => 1249948800, 
            "url" => "http://yourdomain.com/blog/news.html", 
            "url_offset" => 
                [ 
                    "index" => 0, 
                    "type" => "html", 
                ], 
 
            "unique_arg_key" => "unique_arg_value", 
            "category" => 
                [ 
                    0 => "category1", 
                    1 => "category2" 
                ], 
 
            "newsletter" => 
                [ 
                    "newsletter_user_list_id" => 10557865, 
                    "newsletter_id" => 1943530, 
                    "newsletter_send_id" => 2308608, 
                ], 
 
            "asm_group_id" => 1,  
        ]
];
 
$search = 'survey78399';
 
$callback = function($item) use (&$callback, &$search) {
    if (is_array($item)) {
        return array_filter($item, $callback);
    }else {
        return $item === $search;
    }
};
 
$filtered = array_filter($array, $callback);
 
print_r($filtered); // imprime solo key 1 y 3 del arreglo original
/*
Array
(
    [1] => Array
        (
            [email] => [email protected]
            [timestamp] => 1337966855
            [category] => Array
                (
                    [0] => survey78399
                    [1] => transactional
                )
 
            [event] => spam
        )
 
    [3] => Array
        (
            [email] => [email protected]
            [timestamp] => 1337966899
            [category] => survey78399
            [event] => open
        )
 
)
 
*/