diff --git a/php.editor/src/org/netbeans/modules/php/editor/model/impl/ModelVisitor.java b/php.editor/src/org/netbeans/modules/php/editor/model/impl/ModelVisitor.java
--- a/php.editor/src/org/netbeans/modules/php/editor/model/impl/ModelVisitor.java
+++ b/php.editor/src/org/netbeans/modules/php/editor/model/impl/ModelVisitor.java
@@ -1346,10 +1346,12 @@
     }
 
     public VariableScope getVariableScope(int offset) {
+        return getVariableScope(getFileScope().getElements(), offset);
+    }
+
+    private VariableScope getVariableScope(List<? extends ModelElement> elements, int offset) {
         VariableScope retval = null;
-        List<ModelElement> elements = new ArrayList<ModelElement>();
-        elements.add(getFileScope());
-        elements.addAll(ModelUtils.getElements(getFileScope(), true));
+        List<ModelElement> subElements = new LinkedList<ModelElement>();
         for (ModelElement modelElement : elements) {
             if (modelElement instanceof VariableScope) {
                 VariableScope varScope = (VariableScope) modelElement;
@@ -1364,11 +1366,13 @@
                     if (possibleScope && blockRange.containsInclusive(offset)
                             && (retval == null || retval.getBlockRange().overlaps(varScope.getBlockRange()))) {
                         retval = varScope;
+                        subElements.addAll(varScope.getElements());
                     }
                 }
             }
         }
-        return retval;
+        VariableScope subResult = subElements.isEmpty() ? null : getVariableScope(subElements, offset);
+        return subResult == null ? retval : subResult;
     }
 
     private void buildCodeMarks(final int offset) {
diff --git a/php.editor/src/org/netbeans/modules/php/editor/parser/SemanticAnalysis.java b/php.editor/src/org/netbeans/modules/php/editor/parser/SemanticAnalysis.java
--- a/php.editor/src/org/netbeans/modules/php/editor/parser/SemanticAnalysis.java
+++ b/php.editor/src/org/netbeans/modules/php/editor/parser/SemanticAnalysis.java
@@ -48,6 +48,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.WeakHashMap;
 import org.netbeans.modules.csl.api.ColoringAttributes;
 import org.netbeans.modules.csl.api.OffsetRange;
 import org.netbeans.modules.csl.api.SemanticAnalyzer;
@@ -433,10 +434,20 @@
             super.visit(node);
         }
 
+        private final Map<TypeScope, Collection<? extends MethodScope>> typeToMethodCache = new WeakHashMap<TypeScope, Collection<? extends MethodScope>>();
+        private Collection<? extends MethodScope> getMethods(TypeScope typeScope) {
+            Collection<? extends MethodScope> methods = typeToMethodCache.get(typeScope);
+            if (methods == null) {
+                methods = typeScope.getMethods();
+                typeToMethodCache.put(typeScope, methods);
+            }
+            return methods;
+        }
+
         private boolean isDeprecatedMethodInvocation(Collection<? extends TypeScope> typeScopes, Identifier identifier) {
             boolean isDeprecated = false;
             for (TypeScope typeScope : typeScopes) {
-                for (MethodScope methodScope : typeScope.getMethods()) {
+                for (MethodScope methodScope : getMethods(typeScope)) {
                     if (methodScope.getName().equals(identifier.getName()) && methodScope.isDeprecated()) {
                         isDeprecated = true;
                         break;
@@ -540,16 +551,36 @@
             super.scan(node.getDispatcher());
         }
 
+        private final Map<TypeScope, Collection<? extends org.netbeans.modules.php.editor.model.FieldElement>> typeToFieldCache
+                = new WeakHashMap<TypeScope, Collection<? extends org.netbeans.modules.php.editor.model.FieldElement>>();
+        private Collection<? extends org.netbeans.modules.php.editor.model.FieldElement> getFields(ClassScope classScope) {
+            Collection<? extends org.netbeans.modules.php.editor.model.FieldElement> fields = typeToFieldCache.get(classScope);
+            if (fields == null) {
+                fields = classScope.getDeclaredFields();
+                typeToFieldCache.put(classScope, fields);
+            }
+            return fields;
+        }
+
+        private Collection<? extends org.netbeans.modules.php.editor.model.FieldElement> getFields(TraitScope traitScope) {
+            Collection<? extends org.netbeans.modules.php.editor.model.FieldElement> fields = typeToFieldCache.get(traitScope);
+            if (fields == null) {
+                fields = traitScope.getDeclaredFields();
+                typeToFieldCache.put(traitScope, fields);
+            }
+            return fields;
+        }
+
         private boolean isDeprecatedFieldAccess(Collection<? extends TypeScope> typeScopes, String variableName) {
             boolean isDeprecated = false;
             for (TypeScope typeScope : typeScopes) {
                 Collection<? extends org.netbeans.modules.php.editor.model.FieldElement> declaredFields = null;
                 if (typeScope instanceof ClassScope) {
                     ClassScope classScope = (ClassScope) typeScope;
-                    declaredFields = classScope.getDeclaredFields();
+                    declaredFields = getFields(classScope);
                 } else if (typeScope instanceof TraitScope) {
                     TraitScope traitScope = (TraitScope) typeScope;
-                    declaredFields = traitScope.getDeclaredFields();
+                    declaredFields = getFields(traitScope);
                 }
                 if (declaredFields != null) {
                     for (org.netbeans.modules.php.editor.model.FieldElement fieldElement : declaredFields) {
@@ -659,10 +690,20 @@
             super.visit(node);
         }
 
+        private final Map<TypeScope, Collection<? extends ClassConstantElement>> typeToConstantCache = new WeakHashMap<TypeScope, Collection<? extends ClassConstantElement>>();
+        private Collection<? extends ClassConstantElement> getConstants(TypeScope typeScope) {
+            Collection<? extends ClassConstantElement> constants = typeToConstantCache.get(typeScope);
+            if (constants == null) {
+                constants = typeScope.getDeclaredConstants();
+                typeToConstantCache.put(typeScope, constants);
+            }
+            return constants;
+        }
+
         private boolean isDeprecatedConstantAccess(Collection<? extends TypeScope> typeScopes, String constantName) {
             boolean isDeprecated = false;
             for (TypeScope typeScope : typeScopes) {
-                for (ClassConstantElement constantElement : typeScope.getDeclaredConstants()) {
+                for (ClassConstantElement constantElement : getConstants(typeScope)) {
                     if (constantElement.getName().equals(constantName) && constantElement.isDeprecated()) {
                         isDeprecated = true;
                         break;