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Cast $blog_id to int in wp_cache_clear_cache() #1054

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Merged
donnchawp merged 1 commit into from
May 27, 2026
+4 −0
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Cast $blog_id to int in wp_cache_clear_cache() #1054

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4 changes: 4 additions & 0 deletions wp-cache-phase2.php
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Original file line number Diff line number Diff line change
Expand Up @@ -3089,6 +3089,10 @@ function wp_cache_clear_cache_on_menu() {
function wp_cache_clear_cache( $blog_id = 0 ) {
global $cache_path;

// Normalize non-integer callers (e.g. 'all', false) to 0 so they take the
// single-site path instead of reaching get_blog_option() via the blog branch.
$blog_id = (int) $blog_id;

if ( $blog_id == 0 ) {
wp_cache_debug( 'Clearing all cached files in wp_cache_clear_cache()', 4 );
prune_super_cache( $cache_path . 'supercache/', true );
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