htmlSnippet; $ruleId = $violation->ruleId; switch ($ruleId) { case 'WCAG_2_2_2_BLINK': $fixed = str_replace( ['', '', '', ''], ['', '', '', ''], $snippet ); return "EXPLANATION: Banned tag replaced with a span and text-decoration style.\nFIX: " . $fixed; case 'WCAG_2_4_3_AUTOFOCUS': $fixed = preg_replace('/\s+autofocus(=["\'](.*?)["\'])?/i', '', $snippet) ?: $snippet; return "EXPLANATION: Autofocus attribute removed to prevent screen reader interruption on load.\nFIX: " . $fixed; case 'WCAG_1_3_1_TABLE_SUMMARY': $fixed = preg_replace('/\s+summary=["\'](.*?)["\']/i', '', $snippet) ?: $snippet; return "EXPLANATION: Deprecated table summary attribute removed. Use caption elements instead.\nFIX: " . $fixed; case 'WCAG_2_1_1_SCROLLABLE_FOCUS': if (!str_contains($snippet, 'tabindex')) { $fixed = preg_replace('/(style=["\'](.*?)["\'])/i', '$1 tabindex="0"', $snippet) ?: $snippet; return "EXPLANATION: Added tabindex=\"0\" to scrollable region to allow keyboard scrolling.\nFIX: " . $fixed; } break; case 'WCAG_1_3_1_PRESENTATION_TAGS': if (preg_match('/(.*?)<\/center>/is', $snippet, $matches)) { $fixed = '

' . $matches[1] . '

'; return "EXPLANATION: Center element replaced with div and text-align CSS.\nFIX: " . $fixed; } if (preg_match('/(.*?)<\/strike>/is', $snippet, $matches)) { $fixed = '' . $matches[1] . ''; return "EXPLANATION: Strike element replaced with span and line-through decoration CSS.\nFIX: " . $fixed; } break; case 'WCAG_3_1_1_LANG': if (preg_match('/]*>|>)/i', $snippet)) { $fixed = preg_replace('/