Interactivity API: Fix "Cannot use bool as array" error.

swissspidy · swissspidy · commit 564eb69384d7 · 2025-09-15T12:57:22.000Z
Improves PHP 8.5 compatibility where calling `list()` on an empty array throws a warning. Props swissspidy, jonsurrell, mukesh27. Fixes #63977. See #63061. git-svn-id: https://develop.svn.wordpress.org/trunk@60741 602fd350-edb4-49c9-b593-d223f7449a82
diff --git a/src/wp-includes/interactivity-api/class-wp-interactivity-api.php b/src/wp-includes/interactivity-api/class-wp-interactivity-api.php
@@ -423,7 +423,7 @@ private function _process_directives( string $html ) {
 			}
 
 			if ( $p->is_tag_closer() ) {
-				list( $opening_tag_name, $directives_prefixes ) = end( $tag_stack );
+				list( $opening_tag_name, $directives_prefixes ) = ! empty( $tag_stack ) ? end( $tag_stack ) : array( null, null );
 
 				if ( 0 === count( $tag_stack ) || $opening_tag_name !== $tag_name ) {
 

Original file line number	Diff line number	Diff line change
`@@ -423,7 +423,7 @@ private function _process_directives( string $html ) {`
`423`	`423`	`}`
`424`	`424`
`425`	`425`	`if ( $p->is_tag_closer() ) {`
`426`		`- list( $opening_tag_name, $directives_prefixes ) = end( $tag_stack );`
	`426`	`+ list( $opening_tag_name, $directives_prefixes ) = ! empty( $tag_stack ) ? end( $tag_stack ) : array( null, null );`
`427`	`427`
`428`	`428`	`if ( 0 === count( $tag_stack ) \|\| $opening_tag_name !== $tag_name ) {`
`429`	`429`