Title: Fatal error: Uncaught Error: Call to undefined function wp_register_script()
Last modified: December 15, 2022

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# Fatal error: Uncaught Error: Call to undefined function wp_register_script()

 *  [akerenyi](https://wordpress.org/support/users/akerenyi/)
 * (@akerenyi)
 * [3 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-wp_register_script/)
 * Hi!
 * I am trying to create a code snippet for Google Costumer Reviews for our WordPress
   website. This is the first few lines of the snippet:
 *     ```
       /**
       *   Add Google review language scripts
       */
       add_action( 'wp_enqueue_scripts', 'snippetpress_google_customer_reviews_language', 20 );
       function snippetpress_google_customer_reviews_language() {
       		$snippetpress_customer_reviews_language_script = 'window.___gcfg = {lang: \'sv\'};'; // Replace en_GB with your language
               wp_register_script( 'snippetpress_customer_reviews_language_script', '', '', 'false', 'true' );
               wp_enqueue_script( 'snippetpress_customer_reviews_language_script' );
               wp_add_inline_script( 'snippetpress_customer_reviews_language_script', $snippetpress_customer_reviews_language_script );
       }
       ```
   
 * However, when I activate the snippet, the whole website crashes with the following
   error message:
 * “`Fatal error: Uncaught Error: Call to undefined function wp_register_script()
   in /home/vabbaren/public_html/wp-content/plugins/code-snippets/php/snippet-ops.
   php(505) : eval()’d code:7 Stack trace:
    #0 /home/vabbaren/public_html/wp-includes/
   class-wp-hook.php(308): snippetpress_google_customer_reviews_language() #1 /home/
   vabbaren/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()#
   2 /home/vabbaren/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()#
   3 /home/vabbaren/public_html/wp-includes/script-loader.php(2180): do_action()#
   4 /home/vabbaren/public_html/wp-includes/class-wp-hook.php(308): wp_enqueue_scripts()#
   5 /home/vabbaren/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()#
   6 /home/vabbaren/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()#
   7 /home/vabbaren/public_html/wp-includes/general-template.php(3043): do_action()#
   8 /home/vabbaren/public_html/wp-content/themes/flatsome/header.php(18): wp_head()#
   9 /home/vabbaren/public_html/wp-includes/template.php(783): require_once(‘/home/
   vabbaren/…’) #10 /home/vabbaren/public_html/wp-includes/template.php(718): load_template()#
   11 /home/vabbaren/public_html/wp-includes/general-template.php(48): locate_template()#
   12 /home/vabbaren/public_html/wp-content/themes/flatsome/woocommerce/single-product.
   php(17): get_header() #13 /home/vabbaren/public_html/wp-includes/template-loader.
   php(106): include(‘/home/vabbaren/…’) #14 /home/vabbaren/public_html/wp-blog-
   header.php(19): require_once(‘/home/vabbaren/…’) #15 /home/vabbaren/public_html/
   index.php(17): require(‘/home/vabbaren/…’) #16 {main} thrown in /home/vabbaren/
   public_html/wp-content/plugins/code-snippets/php/snippet-ops.php(505) : eval()’
   d code on line 7 ” I have tried to follow the Troubleshooting guide, emptied 
   the caches and inactivated the plugins like W3 Total Cache or Jetpack, but the
   error remains.
 * Could you help me figure out where the issue lies?
 * Many thanks,
    Aron

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Karthick](https://wordpress.org/support/users/karthickmurugan/)
 * (@karthickmurugan)
 * [3 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-wp_register_script/#post-16292945)
 * Hi Aron
 * Could you try updating the PHP version to 7.2 or higher to see if that helps?
 *  Thread Starter [akerenyi](https://wordpress.org/support/users/akerenyi/)
 * (@akerenyi)
 * [3 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-wp_register_script/#post-16293378)
 * Thank you but PHP-version is already 8.0.26
 * Any other ideas?

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Fatal error: Uncaught Error: Call to undefined function wp_register_script()’
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## Tags

 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [akerenyi](https://wordpress.org/support/users/akerenyi/)
 * Last activity: [3 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-wp_register_script/#post-16293378)
 * Status: not resolved

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