Useful functions.php snippets

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Adding browser body classes

Fantastic snippet to tweak CSS for all browsers, source

//*  Adding browser body classesadd_filter('body_class','browser_body_class');function browser_body_class($classes) {    global $is_lynx, $is_gecko, $is_IE, $is_opera, $is_NS4, $is_safari, $is_chrome, $is_iphone;    if ($is_lynx) $classes[] = 'lynx';    elseif($is_gecko) $classes[] = 'gecko';    elseif($is_opera) $classes[] = 'opera';    elseif($is_NS4) $classes[] = 'ns4';    elseif($is_safari) $classes[] = 'safari';    elseif($is_chrome) $classes[] = 'chrome';    elseif($is_IE) $classes[] = 'ie';    else $classes[] = 'unknown';    if ($is_iphone) $classes[] = 'iphone';    return $classes;}

PHP in widgets

YEAH!!! Source: Carry Dills

//* PHP in widgetsadd_filter('widget_text','execute_php',100);function execute_php($html){     if(strpos($html,"<"."?php")!==false){          ob_start();          eval("?".">".$html);          $html=ob_get_contents();          ob_end_clean();     }     return $html;}

Shortcodes in text Widgets

//*  Enable Shortcodes in text Widgets add_filter('widget_text', 'do_shortcode');

Make dashicons CDN available frontend

Dashicons is the official icon font of the WordPress admin as of 3.8, now use it in the frontend of your website.

//*  Make dashicons CDN available add_action('wp_enqueue_scripts', 'load_dashicons_front_end');function load_dashicons_front_end() {    wp_enqueue_style('dashicons');}

Make Font Awesome available

Font Awesome gives you scalable vector icons that can instantly be customized — size, color, drop shadow, and anything that can be done with the power of CSS.

//* Make Font Awesome availableadd_action('wp_enqueue_scripts', 'enqueue_font_awesome');function enqueue_font_awesome() {    wp_enqueue_style('font-awesome', '//netdna.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.css');}

Prevent category from showing up in RSS feed

//* Prevent category from showing up in RSS feedfunction postsFilter($query) {    // Prevent from RSS feed    if ($query - > is_feed()) {        // No posts in category #11 may go into the feed        $query - > set('cat', '-1');    }}add_action('pre_get_posts', 'postsFilter');

Remove emoji script

Don’t like emoji’s butlike speed optimization? Here you go

//* Remove emoji scriptremove_action('wp_head', 'print_emoji_detection_script', 7);remove_action('admin_print_scripts', 'print_emoji_detection_script');remove_action('wp_print_styles', 'print_emoji_styles');remove_action('admin_print_styles', 'print_emoji_styles');

Remove query strings from static resources

Speed optimization but tricky for SEO, this snippet seems the best way to do it, read here

//*  Remove query strings from static resourcesfunction _remove_script_version($src) {    $parts = explode('?ver', $src);    return $parts[0];}add_filter('script_loader_src', '_remove_script_version', 15, 1);add_filter('style_loader_src', '_remove_script_version', 15, 1);

Return only posts after search

Nice clean search results

//*  Return only posts after searchfunction SearchFilter($query) {    if ($query - > is_search) {        $query - > set('post_type', 'YOURPOSTTYPENAME');    }    return $query;}add_filter('pre_get_posts', 'SearchFilter');

Change order of posts in archives

First last? Last first? No need to get biblical here just use this snippet

//*  Change order of posts in archivesadd_filter('pre_get_posts', 'my_change_order');function my_change_order($query) {      if ($query - > is_post_type_archive('YOURPOSTTYPEARCHIVESLUG'))        $query - > set('order', 'asc');      return $query;}

Move admin bar down

Comes in very handy when your website uses a fixed top element.

//* Move admin bar downfunction move_admin_bar() {    echo '