Worked on enhancing the php/doc-en repository by focusing on documentation improvements related to PHP’s filter_var() sanitization constants. Addressed a grammatical issue in the predefined constants section, ensuring greater accuracy and consistency throughout the sanitization guide. The technical approach involved careful review and revision of documentation text to align with established standards, reducing ambiguity for developers referencing these constants. Utilized PHP and documentation best practices to deliver clearer, more maintainable content. This work contributed to a more reliable developer experience by minimizing potential confusion around sanitization constants, although the scope was limited to a single bug fix during the one-month period.