edit inquiry

app/functions.php

@@ -220,4 +220,52 @@ if (!function_exists('removeParentheses')) {
         
         return trim(preg_replace($pattern, '', $str, 1));
     }
+}
+
+/**
+ * 规范hmtl富文本
+ */
+if (!function_exists('normalizeRichText')) {
+    function normalizeRichText(string $html): string 
+    {
+        $dom = new DOMDocument();
+        
+        // 处理UTF-8编码和HTML5标签
+        @$dom->loadHTML('<?xml encoding="UTF-8">' . $html, 
+                    LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
+        
+        // 设置编码并规范化文档
+        $dom->encoding = 'UTF-8';
+        $dom->normalizeDocument();
+        
+        // 统一处理空白字符
+        $xpath = new DOMXPath($dom);
+        foreach ($xpath->query('//text()') as $node) {
+            $normalized = preg_replace('/\s+/u', ' ', trim($node->nodeValue));
+            $node->nodeValue = $normalized;
+        }
+        
+        // 标准化属性顺序（可选）
+        foreach ($xpath->query('//*[@*]') as $element) {
+            $attributes = $element->attributes;
+            $sorted = [];
+            foreach ($attributes as $attr) {
+                $sorted[$attr->nodeName] = $attr->nodeValue;
+            }
+            ksort($sorted);
+            
+            // 移除所有属性后按排序后顺序重新添加
+            while ($attributes->length) {
+                $element->removeAttributeNode($attributes->item(0));
+            }
+            foreach ($sorted as $name => $value) {
+                $element->setAttribute($name, $value);
+            }
+        }
+        
+        // 返回规范化后的HTML
+        $result = trim($dom->saveHTML());
+        // 替换所有空白实体为普通空格
+        return preg_replace('/\s+/u', ' ', $result);
+    }
 }