如何从数组中的对象中获取值

Question

I'm trying to get data out of a variable called $items

When I var_dump($items); - the result is like this:

array(13) { 

[0]=> object(stdClass)#868 (2) { 
        ["meta_key"]=> string(17) "Email of Attendee"        
        ["meta_value"]=> string(68) "[e-mail]" 
} 

[2]=> object(stdClass)#804 (2) { 
        ["meta_key"]=> string(28) "Name to be printed on badge:" 
        ["meta_value"]=> string(7) "some name to be printed" 
}

...and so on 11 more times

I want to know if it is possible to get the email from $items with code that something like this:

$email = $items find the object where meta_key has the value "Email of Attendee" then return me the corresponding value.

What I ended up doing was running $items through a foreach loop like so:

foreach($items as $item){

    $items[$item->meta_key]=$item->meta_value;

}

Which converts all the "meta_keys" into the values that they were referencing. now:

$email = $items["Email of Attendee"]  

echo $email; 

result is [e-mail]

Posting this so that a. someone else in a similar jam might use the for each loop that converts things

b. someone with more experience can suggest a way to get the "Email of Attendee directly from the $items, without having to run it through a foreach loop.

Answer 1

Still relying on the use of foreach loop.

function get_email($items) {

    foreach($items as $item){

        if (in_array("Email of Attendee", $item) {
            $email = $item["meta_value"];
            break;
        }

    }
    return $email;
}

Correction You can get the particular object with array_filter

$result = array_filter($array, function($o) {
                   return $o->meta_key == "Email of Attendee";
});

$email = $result[0]->meta_value;

echo $email;