feniksdv

<?php
$arr = [
    'name1' => 'apple',
    'name100' => 'jaguar'
];

$str = '[name1]';

echo finder($arr, $str);

echo PHP_EOL;

echo finder(
    $arr,
    '[name2][name1][name100]'
);

function finder($arr, $str) {
    $output = '';
    foreach($arr as $key=>$value) {
        $pattern = "/\[{$key}\]/";
        preg_match($pattern, $str, $matches);
        if (count($matches) > 0 ) {
            $output .= $arr[$key] . PHP_EOL;
        }
    }
    return $output;
}

Как вариант:

$array = ['яблоко','сельдерей'];
foreach($array as $key=>$value){
$new_array['name'.$key] = $value;
}
$array = $new_array;

$('#add-image').click(function(e) {
        e.preventDefault();
        var image = wp.media({ 
            title: 'Upload Image',
            multiple: false
        }).open()
        .on('select', function(e){
            var uploaded_image = image.state().get('selection').first();
            console.log(uploaded_image);
            var image_url = uploaded_image.toJSON().url;
        });
    });

добавляем кнопку #add-image
по клику получаем стандартное окно медиа библиотеки

echo '<input type="radio" name="test" value="1" '.($_GET["test"] == 1? "checked":"" ).'>1<br>';
echo '<input type="radio" name="test" value="2" '.($_GET["test"] == 2? "checked":"" ).'>2<br>';
echo '<input type="radio" name="test" value="3" '.($_GET["test"] == 3? "checked":"" ).'>3<br>';
echo '<input type="submit" value="go"><br>';