https://lhero.org/portfolio/lh-seo-meta-tags/ Helping Organisations get organised! Sun, 23 Aug 2026 12:47:06 +0000 hourly 1 https://lhero.org/portfolio/lh-seo-meta-tags/#comment-1536034 Sun, 23 Aug 2026 12:47:06 +0000 https://lhero.org/?p=1101#comment-1536034 Fix PHP Deprecated: preg_replace() null-subject warning flooding the debug log network-wide. add_html_meta() (hooked on wp_head at PHP_INT_MAX, so it runs on every front-end page load across every subsite) unconditionally does `echo wp_kses_post( self::maybe_do_rel_canonical() )`. maybe_do_rel_canonical() has no return statement for the common case (any non-front-page URL), so it implicitly returns null, which flows into wp_kses_post -> wp_kses -> wp_kses_no_null -> preg_replace($pattern, ”, null), triggering the deprecation on PHP 8.1+. Added an explicit `return ”;` fallback. Also hardened three sibling helpers with the same shape (maybe_do_rel_index, return_post_description, render_meta_description) that returned bare `false` instead of null but are exposed to the same class of notice – changed their empty-case returns to ” for consistency, since they also feed into echo/wp_kses_post(). No behavioural change on any branch that previously returned real content. Bumped version 1.24 -> 1.25 per standing instructions.

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