properly convert IPhpArray

IPhpArray was treated as object causing multiple implicit conversion issues

src/Peachpie.CodeAnalysis/CodeGen/CodeGenerator.Convert.cs

@@ -96,7 +96,15 @@ namespace Pchp.CodeAnalysis.CodeGen
 
                 if (from.IsReferenceType)
                 {
-                    EmitCall(ILOpCode.Call, CoreMethods.PhpValue.FromClass_Object).Expect(CoreTypes.PhpValue);
+                    if (from.Is_IPhpArray()) // Blob or PhpArray
+                    {
+                        EmitCall(ILOpCode.Call, CoreMethods.PhpValue.Create_IPhpArray).Expect(CoreTypes.PhpValue);
+                    }
+                    else
+                    {
+                        Debug.Assert(!Conversions.IsSpecialReferenceType(from));
+                        EmitCall(ILOpCode.Call, CoreMethods.PhpValue.FromClass_Object).Expect(CoreTypes.PhpValue);
+                    }
                 }
                 else if (from.SpecialType == SpecialType.System_Void)
                 {

src/Peachpie.CodeAnalysis/Semantics/Conversions.cs

@@ -434,10 +434,20 @@ namespace Pchp.CodeAnalysis.Semantics
         MethodSymbol TryWellKnownImplicitConversion(TypeSymbol from, TypeSymbol to)
         {
             // Object -> PhpValue
-            if (to == _compilation.CoreTypes.PhpValue && from.IsReferenceType && !IsSpecialReferenceType(from))
+            if (to == _compilation.CoreTypes.PhpValue)
             {
-                // expecting the object to be a class instance
-                return _compilation.CoreMethods.PhpValue.FromClass_Object;
+                if (from.IsReferenceType && !IsSpecialReferenceType(from))
+                {
+                    if (from.Is_IPhpArray()) // Blob or PhpArray
+                    {
+                        return _compilation.CoreMethods.PhpValue.Create_IPhpArray;
+                    }
+                    else
+                    {
+                        // expecting the object to be a class instance
+                        return _compilation.CoreMethods.PhpValue.FromClass_Object;
+                    }
+                }
             }
 
             //

src/Peachpie.CodeAnalysis/Symbols/CoreMembers.cs

@@ -580,6 +580,7 @@ namespace Pchp.CodeAnalysis.Symbols
                 Create_PhpString = ct.PhpValue.Method("Create", ct.PhpString);
                 Create_PhpNumber = ct.PhpValue.Method("Create", ct.PhpNumber);
                 Create_PhpArray = ct.PhpValue.Method("Create", ct.PhpArray);
+                Create_IPhpArray = ct.PhpValue.Method("Create", ct.IPhpArray);
                 Create_PhpAlias = ct.PhpValue.Method("Create", ct.PhpAlias);
                 Create_IntStringKey = ct.PhpValue.Method("Create", ct.IntStringKey);
 
@@ -598,7 +599,7 @@ namespace Pchp.CodeAnalysis.Symbols
                 DeepCopy, GetValue,
                 Eq_PhpValue_PhpValue, Eq_PhpValue_String, Eq_String_PhpValue,
                 Ineq_PhpValue_PhpValue, Ineq_PhpValue_String, Ineq_String_PhpValue,
-                Create_Boolean, Create_Long, Create_Int, Create_Double, Create_String, Create_PhpString, Create_PhpNumber, Create_PhpAlias, Create_PhpArray, Create_IntStringKey,
+                Create_Boolean, Create_Long, Create_Int, Create_Double, Create_String, Create_PhpString, Create_PhpNumber, Create_PhpAlias, Create_PhpArray, Create_IPhpArray, Create_IntStringKey,
                 FromClr_Object, FromClass_Object, FromStruct_T;
 
             public readonly CoreField

src/Peachpie.CodeAnalysis/Symbols/TypeSymbolExtensions.cs

@@ -112,6 +112,11 @@ namespace Pchp.CodeAnalysis.Symbols
             return t.MetadataName == "PhpArray" && (t.ContainingAssembly as AssemblySymbol)?.IsPeachpieCorLibrary == true;
         }
 
+        public static bool Is_IPhpArray(this ITypeSymbol t)
+        {
+            return t.MetadataName == "IPhpArray" && (t.ContainingAssembly as AssemblySymbol)?.IsPeachpieCorLibrary == true;
+        }
+
         public static bool Is_PhpResource(this ITypeSymbol t)
         {
             return t.MetadataName == "PhpResource" && (t.ContainingAssembly as AssemblySymbol)?.IsPeachpieCorLibrary == true;