Function and usage of display_themes() in wordpress

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    2024-01-05T23:26:43+00:00

    The display_themes() function in WordPress is a part of the WordPress Theme Administration API. It is used to display theme content based on a list of themes. This function is typically used in the WordPress admin area to show themes in a way that makes it easy for users to browse, preview, and choose themes for their site.

    Function Overview:

    • Purpose: display_themes() is designed to render a visual representation of available themes to the user, usually in the WordPress dashboard.
    • Usage Context: It is primarily used in the WordPress admin area, specifically on the theme selection or customization page.
    • Output: The output of this function is a graphical display of themes, each represented with a screenshot, name, and description, allowing users to easily understand what each theme looks like and what it offers.

    Sample Usage:

    The display_themes() function is not commonly used directly by theme developers or in custom code. It is more of an internal WordPress function. However, if you were to use it, the usage might look something like this:

    <?php
    // Ensure that the function exists and is not being called out of context.
    if (function_exists('display_themes')) {
        // Prepare a list of themes to display.
        $themes = array('theme1', 'theme2', 'theme3'); // Replace with actual theme slugs/names.
    
        // Call the function to display the themes.
        display_themes($themes);
    }
    ?>
    

    In this sample, the function is first checked for existence to avoid errors in case it's called in a context where it's not defined (like a front-end theme file). Then, an array of theme names or slugs is passed to the function to display those themes.

    Important Considerations:

    • Context: This function should not be used outside the WordPress admin area, as it relies on admin-specific scripts and styles.
    • Customization: While display_themes() is useful for standard WordPress admin functionality, it's not typically used for custom theme displays on the front-end or in custom settings pages.
    • Updates: Always check the current WordPress documentation for any changes or updates to the function’s behavior or parameters.

    For the most accurate and up-to-date information, refer to the official WordPress Codex or Developer Resources. WordPress regularly updates its functions and APIs, so it's important to ensure compatibility with your version of WordPress.

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