BETA - 2.12.3.1

• Performance:
  • Refactor caching mechanism from transients to options for translations and slugs
  • Add caching for translated attributes, JSON functions, URL parsing and language lists
  • Optimize wplng_get_translated_text_from_translations(), meta_query structures and wplng_text_is_translatable()
  • Skip JS script translation files larger than 2MB for JSON translation files
  • Handle JSON generation failures gracefully in script translation functions
  • Replace strpos/str_contains with wplng_str_contains wrapper throughout codebase
• Improvement:
  • Add cache and option cleanup on plugin deactivation
  • Add input validation to string utility functions
  • Add wplng_bypass_multisite_incompatibility filter
• Security:
  • Prevent path traversal attacks in cache file operations
  • Sanitize custom CSS output to prevent breaking out of <style> context
  • Add input validation and strict type checks across admin option pages (escaping, esc_html_e, esc_attr__)
  • Sanitize post ID in AJAX modal edit and save functions
  • Sanitize API key expiration date and error messages from API responses
  • Improve sanitization in slug and translation save functions (replace stripslashes with wp_unslash)
  • Add error handling for invalid IV length in encryption functions
  • Enforce strict type checking for API feature flags
• Fix:
  • Slug creation logic in admin bar using wrong variable after loop
  • Undefined $language_target_id in wplng_get_language_name_translated()
  • Cache variable not properly set in wplng_get_language_current_id()
  • wplng_get_language_by_id() now handles missing language IDs and prevents infinite recursion
  • Regex pattern in wplng_get_translated_text_from_translations() to correctly capture trailing whitespace
  • Regex pattern in wplng_url_is_translatable_no_filter() to correctly match file URLs
  • Regex validation in wplng_get_url_exclude_regex() to prevent PHP errors on invalid patterns
  • Regex fallback in wplng_link_media_apply_rules() to return original URL if preg_replace fails
  • Return value handling in wplng_translate_html() and incorrect type casting of DOM object
  • Non-ASCII characters now preserved in translated search queries
  • Slug sanitization and decoding in wplng_create_slug()
  • Removed incorrect esc_attr from wplng_get_switcher_class() return value
  • wplng_save_translation() now returns the result of save or update operations