theme-development

Getting failure when using filemtime() with wp_enqueue_style

It’s because you’re retrieving it via URL, but filemtime() requires a path. Use get_stylesheet_directory() instead. That returns a path: function pro_styles() { wp_enqueue_style( ‘child-style’, get_stylesheet_directory_uri() .’/child-style.css’, array(), filemtime(get_stylesheet_directory() .’/child-style.css’), ‘all’ ); } add_action( ‘wp_enqueue_scripts’, ‘pro_styles’ );

When to use add_action(‘init’) vs add_action(‘wp_enqueue_scripts’)

A lot of plugin developers don’t do things the right way. The right way is to hook on to wp_enqueue_scripts like you’re trying to do. However, here’s the order of the hooks run in a typical request: muplugins_loaded registered_taxonomy registered_post_type plugins_loaded sanitize_comment_cookies setup_theme load_textdomain after_setup_theme auth_cookie_malformed auth_cookie_valid set_current_user init widgets_init register_sidebar wp_register_sidebar_widget wp_default_scripts wp_default_stypes admin_bar_init … Read more

after_setup_theme always runs

SOLUTION: after_switch_theme does exactly what I intended here. It fires after the theme is switched TO your theme. One of the solutions mentioned below uses switch_theme. This does not have the desired results, since it only happens upon switching away from your theme. Here is an article that I found as reference: http://core.trac.wordpress.org/ticket/7795#comment:29 Here is … Read more

Get the first image from post content (eg.: hotlinked images)

If you want display an image that is inserted into your content (a hotlinked image, for example), you must use a function like this (source): add in functions.php: function catch_that_image() { global $post, $posts; $first_img = ”; ob_start(); ob_end_clean(); $output = preg_match_all(‘/<img.+src=[\'”]([^\'”]+)[\'”].*>/i’, $post->post_content, $matches); $first_img = $matches [1] [0]; if(empty($first_img)){ //Defines a default image $first_img … Read more

The proper way to include/require PHP files in WordPress

If you check https://codex.wordpress.org/Function_Reference/get_template_directory_uri You will see get_template_directory_uri() returns a uri, not a server path. You should use instead the get_template_directory() function: include get_template_directory() . ‘subdir/filename.php’; For a plugin you can use the plugin_dir_path() function: include plugin_dir_path( __FILE__ ) . ‘subdir/filename.php’;

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