Articles of function exists

override pluggable.php functions

I just not only want to override a pluggable function (wp_new_user_notification) but I want to make sure that if any other plugin is overriding the same function, so my function , override that too or I want my overridden function to work instead of other plugin that is overriding the same function (wp_new_user_notification). May be […]

Twenty Eleven Child theme error when attempting to use a rewritten function

I attempted to make a minor change to a function in the Twenty Eleven theme (wordpress 3.4.2) I get this error message: Fatal error: Cannot redeclare twentyeleven_widgets_init() (previously declared in /home/labfocus/public_html/wp-content/themes/twentyeleven-child/functions.php:10) in /home/labfocus/public_html/wp-content/themes/twentyeleven/functions.php on line 438 Here is the function that I am attempting to add in place of the original <?php if ( !function_exists(‘twentyeleven_widgets_init’)) […]

Where does function_exists() look to decide whether a function exists?

The documentation says: Checks the list of defined functions, both built-in (internal) and user-defined, for function_name. ( SOURCE: Does the function merely scan the single php document using function_exists, looking for any functions that match? For example if I have if ( function_exists( ‘get_custom_header’ ) in header.php, will the function look for get_custom_header in […]

if custom post type exist

I want to test if custom post type mobile exist. I used if custom post type exist in the loop, but it doesn’t work. Any suggestion why my code is not working <?php /* The loop */ ?> <?php if ( have_posts() ) : ?>… <?php while ( have_posts() ) : the_post(); ?> <? if( […]

Is calling function_exists() faster or slower that apply_filters()

Is calling function_exists() faster or slower that apply_filters() … or is the difference so small that it should not be considered? I did a bit of testing based on Kaiser’s and it showed that function_exists() is ~3 times faster where both the function and filter exist. and ~11 times faster if the filter does not […]

Include jQuery UI as a whole

Is it possible to include jQuery UI as a whole instead of: wp_enqueue_script(‘jquery-ui-core’); wp_enqueue_script(‘jquery-effects-core’); // a lot of other jquery ui imports…. I’ve searched in the codex and was able to find the full list of included scripts, but could not find a way to include the full jQuery UI version as one import like: […]