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The goal of this post is to index warnings and how to troubleshoot them, some example solutions so we don’t have to scour threads for answers. Let’s see how we do!

What call_user_func_array(), array_unique(), array_search() type warnings may mean

Here are some typical warnings you might see when editing or adding a post in WordPress: 

If you see these following warnings show up it’s typically after an update to WordPress core, your theme, or plugins. Otherwise it could be the result of adding a code snippet to your functions.php or otherwise.

Warning: call_user_func_array() expects parameter 1 to be a valid
callback, function 'some_functions_name' not found or invalid 
function name in /.../wp-includes/class-wp-hook.php on line 286

call_user_func_array() warning above lists the name of the function its referring to, but not the location of that function in your files. Somewhere in your /wp-content/themes/your-theme or /wp-content/plugins/some-plugin folder there is a function being referenced. Often it’s as one of these:

add_action('location_of_action','name_of_function');

// or 

add_filter('location_of_filter','name_of_function');

Basically, that reference needs to be removed, for me it was commenting out a reference to: “add_filter( ‘tiny_mce_plugins’, ‘disable_emojis_tinymce’ );” which I was part of a mega function I created to strip a lot of junk out of wordpress. This function became deprecated, so it was no longer working anyway.

The easiest way you find the function in question is to try to find the referenced function in your wp-content folder. When I’m trying to quickly find code, I download my theme and plugins via ftp and search those folders for the name of the function. 

If it happens to be in a plugin, often updating that plugin can help if it hasn’t been updated, meaning WordPress core updated, or PHP version updated, or some such and corresponding plugin wasn’t yet updated to match. If that doesn’t work, reach out to the plugin developer and let them know and wait. Not much else you can do, (its just a warning anyway and can be hidden by turning off debug mode).

How to turn off wp_debug mode

For most hosts its by changing a line in your wp-config.php file from:

define('WP_DEBUG', true);

// change above to the following: 

define('WP_DEBUG', false);

Warning: array_unique() expects parameter 1 to be array, null given in /.../wp-includes/class-wp-editor.php on line 426

Warning: array_search() expects parameter 2 to be array, null given in /.../wp-includes/class-wp-editor.php on line 428

Warning: implode(): Invalid arguments passed in /.../wp-includes/class-wp-editor.phpon line 515

These warnings should get fixed with the top warning being addressed. They’re just additional references expecting the function that you referenced that no longer exists in wp-includes folder. In my example its class-wp-editor.php because I was trying to remove a setting from the post editor ( TinyMCE editor) when I upgraded WordPress and added Gutenberg plugin.

I’ll add to this as time goes on but start it from .ttf file to web font package.

A web font package should be completely cross-browser compatible. But often you’ll find a great font on the web, free to download, and it’s only in .ttf format.

What is .TTF Anyway?

Dynamic Tweets

Dynamic tweets allows you to send up to 20 scheduled tweets per day for free. If you’re looking to keep it simple with only tweet scheduling and you’re just getting started, I’d play with this. One con I noticed is that the site isn’t https. I always like to see secure sites when I’m sending password information.

HootSuite Free

Hootsuite is hard to beat. They have a large team, always bring in new features, and have substantial marketshare. The user interface is
clean and easy and you can link up multiple social profiles.

You can also create tweet templates to speed up the process of scheduling tweets you want to repeat send. If you aren’t repeat sending your best tweets, you might want to consider it. This is a great post on the topic. But keep in mind, without the pro version of hootsuite, you can’t bulk upload scheduled tweets from a csv or excel file.