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WordPress From Bootstrap to WordPress Setup a Bootstrap Theme Add Bootstrap JS via the functions.php File

Glenn Basgaard
Glenn Basgaard
7,987 Points
Posted by Glenn Basgaard
Glenn Basgaard
7,987 Points

global $wp_scripts

Can anybody further explain what global and $wp_scripts individually pertain to. I couldn't find much on it. I did find that global $wp_scripts is part of the source code for the wp_scripts() function but that's about it. Thanks!

Michael Hazani
Michael Hazani
1,043 Points
Michael Hazani
Michael Hazani
1,043 Points

Hi Glenn,

global isn't wordpress-related - it's simply a php keyword that denotes declaration of a global variable. More info here: http://php.net/manual/en/language.variables.scope.php (It's probably covered in Treehouse's PHP courses and is definitely covered in codecademy's intro to PHP.)

As far as I can tell, wp_scripts is an object that contains all the scripts your theme is using. Under the hood, that's where all the scripts you're registering are "kept", if you will. We initialize it globally before registering scripts in it, which is pretty straightforward, especially if you think of it in terms of OOP.

Interestingly, wp_scripts is also a function (https://developer.wordpress.org/reference/functions/wp_scripts/), which also initializes a $wp_scripts object - honestly I'm not sure what's the difference between the two ways of initializing.

If you want to dig deeper, here is a list of all the functions available through wp-includes/functions.wp-scripts.php - many of which are discussed in this lesson: https://developer.wordpress.org/reference/files/wp-includes/functions-wp-scripts.php/

Hope this helps!