Using WordPress ‘get_allowed_themes()’ PHP function

The get_allowed_themes() WordPress PHP function retrieves the allowed themes for the current site.

Usage

$allowed_themes = get_allowed_themes();

Parameters

None

More information

See WordPress Developer Resources: get_allowed_themes()

Examples

Display a list of allowed themes

This code retrieves a list of allowed themes and displays their names.

$allowed_themes = get_allowed_themes();

foreach ($allowed_themes as $theme) {
    echo $theme->get('Name') . '<br>';
}

Check if a specific theme is allowed

This code checks if the “Twenty Twenty-One” theme is allowed on the current site.

$allowed_themes = get_allowed_themes();

if (isset($allowed_themes['twentytwentyone'])) {
    echo 'The Twenty Twenty-One theme is allowed.';
} else {
    echo 'The Twenty Twenty-One theme is not allowed.';
}

Count the number of allowed themes

This code counts the number of allowed themes and displays the result.

$allowed_themes = get_allowed_themes();
$allowed_themes_count = count($allowed_themes);

echo 'There are ' . $allowed_themes_count . ' allowed themes.';

This code creates a dropdown list with the allowed themes.

<select name="theme_selection">
    <?php
        $allowed_themes = get_allowed_themes();

        foreach ($allowed_themes as $theme) {
            $theme_name = $theme->get('Name');
            echo '<option value="' . $theme_name . '">' . $theme_name . '</option>';
        }
    ?>
</select>

Apply a random allowed theme

This code applies a random allowed theme to the current site.

$allowed_themes = get_allowed_themes();
$random_theme_key = array_rand($allowed_themes);
$random_theme = $allowed_themes[$random_theme_key];

switch_theme($random_theme->get_stylesheet());