how to call a function instide an php array as a value

Question

I am trying to call a function inside an array as a value but is not working the function instead is echoed outside the array.

Here is my code example:

function plm() {
    global $InfoPing;
    foreach($InfoPing['description']['extra'] as $plm) {
        echo $plm['text'];
    }
}

$json = array(
    'status' => 'Online',
    'motd' => array(
        'ingame' => plm()
    ),
    'host' => array(
        'host' => $host,
        'port' => $port
    ),
    'players' => array(
        'max' => $InfoPing['players']['max'],
        'online' => $InfoPing['players']['online']
    ),
    'version' => array(
        'version' => $version[1],
        'protocol' => $InfoPing['version']['protocol']
    ),
    'queryinfo' => array(
        'agreement' => 'Ping',
        'processed' => $Timer
    )
);

echo json_encode($json, JSON_UNESCAPED_UNICODE|JSON_PRETTY_PRINT);

Any help highly is appreciated.

AbraCadaver · Accepted Answer · 2021-01-26 21:09:56Z

1

As Blake Ottinger points out in their answer, you need to return the data, not echo. But when you return, you exit the function and only the first value will be returned. If you want text from all elements of $InfoPing['description']['extra'], then build an array and return it:

function plm() {
    global $InfoPing;
    foreach($InfoPing['description']['extra'] as $plm) {
        $result[] = $plm['text'];
    }
    return $result;
}

However, instead of the function you can just extract all text with a built-in function and assign it to the array:

'ingame' => array_column($InfoPing['description']['extra'], 'text');

answered Jan 26, 2021 at 21:09

AbraCadaver

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AbraCadaver · Accepted Answer · 2021-01-26 21:06:02Z

1

Your issue stems from your usage of echo within the plm() function. Because it echoes instead of returning, it sends it to the browser ahead of the rest of the JSON, and then returns NULL, thereby inserting the NULL value into the array. Change it to return instead.

function plm() {
    global $InfoPing;
    foreach($InfoPing['description']['extra'] as $plm) {
        return $plm['text'];
    }
}

This should fix your issues.

edited Jan 26, 2021 at 21:06

AbraCadaver

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answered Jan 26, 2021 at 20:19

Blake Ottinger

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1 Comment

AbraCadaver Over a year ago

I would question why they use a loop as return returns only the first one.

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