Array Replace Fix

<?php
$patterns = array(
    '{title}'  => '60: The Winds of Winter',
    '{desc}'   => 'Information for Episode 60: The Winds of Winter of Game of Thrones on HBO, featuring videos, images, synopsis and schedule.',
    '{tags}'   => 'HBO, Game of Thrones, Winter Is Coming, Clash of Kings George R.R. Martin',
    '{image}'  => 'http://i.lv3.hbo.com/assets/images/series/game-of-thrones/episodes/6/60/episode-60-1024.jpg',
    '{source}' => 'http://www.hbo.com/game-of-thrones/episodes/6/60-60-the-winds-of-winter/index.html',
);
$imdbData = json_decode(file_get_contents('http://www.omdbapi.com/?i=tt0944947&plot=full&r=json'), true);
foreach ($imdbData as $key => $value) {
    $patterns['{imdb_' . $key . '}'] = $value;
}

$testData = array(
    'title'  => '{imdb_Title} - {title}',
    'tags'   => 'Tags: {tags}',
    'desc'   => 'Desc: {desc}',
    'image'  => '<img src="{image}" alt="{title}">',
    'source' => 'Source: {source}',
    'extra'  => array(
        'language'   => '{imdb_Language}',
        'imdbInfo'   => array(
            'rating'    => '{imdb_imdbRating}',
            'votes'     => '{imdb_imdbVotes}',
            'metascore' => '{imdb_Metascore}',
        ),
        'seriesInfo' => array(
            'genre'    => '{imdb_Genre}',
            'released' => '{imdb_Released}',
            'runtime'  => '{imdb_Runtime}',
            'cast'     => array(
                'director' => '{imdb_Director}',
                'writer'   => '{imdb_Writer}',
                'actors'   => '{imdb_Actors}',
            ),
        ),
    ),
);

/*
* Bad code
foreach ($testData as $key => $value) {
	if (is_array($value)) {
		foreach ($value as $parentKey => $parentValue) {
				if (is_array($parentValue)) {
					# ...
				} else {
					$parentValue = applyPatterns($patterns,$parentValue);
					$value[$parentKey] = $parentValue;
				}
			}	
	} else {
		$value = applyPatterns($patterns,$value);
	}
	$testData[$key] = $value;
}

echo "<pre>";
print_r ($testData);
echo "</pre>";
die;
*/

#My Fix code
array_walk_recursive($testData, function (&$text) use ($patterns) {
	$text = applyPatterns($patterns, $text);
});

echo "<pre>";
print_r($testData);
echo "</pre>";

function applyPatterns($patterns, $text) {
    $search  = array_keys($patterns);
    $replace = array_values($patterns);
    return str_replace($search, $replace, $text);
}