Script Loader: Check if `error_reporting()` exists in `load-(scripts|styles).php`.

This avoids a fatal error on PHP 8 if `error_reporting()` is disabled in `php.ini`.

On systems with this function disabled, it's best to add a dummy function to the `wp-config.php` file, as there are multiple other calls in core or plugins.

However, as this call to the function is run prior to `wp-config.php` loading, it is now wrapped in a `function_exists()` check.

Follow-up to [50447].

Props gansbrest, sabernhardt, jrf, martin.krcho, SergeyBiryukov.
Fixes #61873.
Built from https://develop.svn.wordpress.org/trunk@58905


git-svn-id: http://core.svn.wordpress.org/trunk@58301 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/load-scripts.php

@@ -1,11 +1,18 @@
 <?php
 
 /*
+ * The error_reporting() function can be disabled in php.ini. On systems where that is the case,
+ * it's best to add a dummy function to the wp-config.php file, but as this call to the function
+ * is run prior to wp-config.php loading, it is wrapped in a function_exists() check.
+ */
+if ( function_exists( 'error_reporting' ) ) {
+	/*
 	 * Disable error reporting.
 	 *
 	 * Set this to error_reporting( -1 ) for debugging.
 	 */
-error_reporting( 0 );
+	error_reporting( 0 );
+}
 
 // Set ABSPATH for execution.
 if ( ! defined( 'ABSPATH' ) ) {

wp-admin/load-styles.php

@@ -1,11 +1,18 @@
 <?php
 
 /*
+ * The error_reporting() function can be disabled in php.ini. On systems where that is the case,
+ * it's best to add a dummy function to the wp-config.php file, but as this call to the function
+ * is run prior to wp-config.php loading, it is wrapped in a function_exists() check.
+ */
+if ( function_exists( 'error_reporting' ) ) {
+	/*
 	 * Disable error reporting.
 	 *
 	 * Set this to error_reporting( -1 ) for debugging.
 	 */
-error_reporting( 0 );
+	error_reporting( 0 );
+}
 
 // Set ABSPATH for execution.
 if ( ! defined( 'ABSPATH' ) ) {

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-58904';
+$wp_version = '6.7-alpha-58905';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.