Title: Fatal Errors changing after changing functions.php Last modified: August 21, 2016 --- # Fatal Errors changing after changing functions.php * [goosus](https://wordpress.org/support/users/goosus/) * (@goosus) * [12 years, 4 months ago](https://wordpress.org/support/topic/fatal-errors-changing-after-changing-functionsphp/) * Hello, I’m a PHP/Javascript developer with some experience with WP, but I was called in on an emergency by a friend to help fix errors in their current WP site which is built on some crazy theme by this guy: * dressyourwp.com * I figured out that the problem is in the version of jQuery being used, so I attempted to add the jQuery migrate to the registered scripts by doing the following change: * ``` // Add RSS links to section automatic_feed_links(); // Load jQuery if ( !is_admin() ) { wp_deregister_script('jquery'); wp_register_script('jquery', ("http://code.jquery.com/jquery-1.10.2.js"), false); // ADDED THIS LINE ONLY wp_register_script('jquery-migrate', ("http://code.jquery.com/jquery-migrate-1.2.1.js"), false); // END OF EDIT wp_enqueue_script( 'jquery.colorbox', get_bloginfo('template_directory') . '/js/jquery.colorbox.js', array( 'jquery' ) ); wp_enqueue_script("prototype", get_bloginfo('template_url') . "/js/prototype.js"); wp_enqueue_script("scriptaculous", get_bloginfo('template_url') . "/js/scriptaculous.js"); wp_enqueue_script("glider", get_bloginfo('template_url') . "/js/glider.js"); wp_enqueue_script(" validation", get_bloginfo('template_url') . "/js/ validation.js"); } ``` * When I uploaded ONLY THAT ONE CHANGE. The entire site now says: * [http://www.albanco.com/](http://www.albanco.com/) * Fatal error: Call to undefined function automatic_feed_links() in /data/…/htdocs/ wp-includes/functions.php on line 4 * I removed that line and uploaded the original functions.php and have the same error… I have no idea what happened or how it happened, but now a simple fix for a big problem has turned in to a MAJOR problem that I can’t seem to figure out. * I’ve commented out the automatic_feeds_link() function and then another function throws the same error… it’s like editing this single PHP file caused it to “recompile” and break the entire build… which doesn’t make sense since I was under the impression PHP didn’t compile. * Because of the complexity of the theme and the fact that I didn’t make it, I’m really apprehensive about removing it or changing anything else. * Can somebody please explain to me what happened? The Theme was loading up fine, i made no other changes… how can a single line (which is then removed) cause such destruction? Viewing 16 replies (of 16 total) [←](https://wordpress.org/support/topic/fatal-errors-changing-after-changing-functionsphp/?output_format=md) [1](https://wordpress.org/support/topic/fatal-errors-changing-after-changing-functionsphp/?output_format=md) 2 * [esmi](https://wordpress.org/support/users/esmi/) * (@esmi) * [12 years, 4 months ago](https://wordpress.org/support/topic/fatal-errors-changing-after-changing-functionsphp/page/2/#post-4560148) * > I’m not looking to mire myself again by attempting to upgrade their WP with > this shoddy theme and unknown plugins * Good for you! 🙂 * > I feel like WP support requires such esoteric, non-PHP specific knowledge * In what way? WP just uses boring old PHP but like every other CMS out there, it just has its own pre-built custom functions & filters. * > I doubt I could contribute more than noise * Oh – you’d be surprised how many support topics we deal with where we have to try and talk someone through using FTP or what a server error log is or the fact that it can take up to 3 days for a new domain reg to fully propagate. And that’s not even taking into account the ton of basic CSS issues that are posted. Pretty basic stuff. 🙂 Viewing 16 replies (of 16 total) [←](https://wordpress.org/support/topic/fatal-errors-changing-after-changing-functionsphp/?output_format=md) [1](https://wordpress.org/support/topic/fatal-errors-changing-after-changing-functionsphp/?output_format=md) 2 The topic ‘Fatal Errors changing after changing functions.php’ is closed to new replies. ## Tags * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 16 replies * 3 participants * Last reply from: [esmi](https://wordpress.org/support/users/esmi/) * Last activity: [12 years, 4 months ago](https://wordpress.org/support/topic/fatal-errors-changing-after-changing-functionsphp/page/2/#post-4560148) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics