I have found the same problem, but it fires only if child class has __construct(). Look at this code:

error_reporting(E_ALL);

class Base {
	function __construct() { 
		print "Base::Construct()\n"; 
	}
	function __get($name) {
		return $this->{"__get$name"}();
	}
	
	function __set($name, $value) {
		return $this->{"__set$name"}($value);
	}
	
}

class Child extends Base {
	function __construct() {
		parent::__construct();
	}

	function __getFoo() {
		return 'zoo';
	}
}


$q = new Child();

// where we get an Notice: Undefined property: foo
print $q->foo;  

-----------------------------------

Sample without the problem:

error_reporting(E_ALL);

class Base {
	function __construct() { 
		print "Base::Construct()\n"; 
	}
	function __get($name) {
		return $this->{"__get$name"}();
	}
	
	function __set($name, $value) {
		return $this->{"__set$name"}($value);
	}
	
}

class Child extends Base {
	function __getFoo() {
		return 'zoo';
	}
}


$q = new Child();

// prints 'zoo', all is OK
print $q->foo;

-------------------------------------

Moveover, the Child class inherites __get, __set from Base in both cases above.

$q = new Child();
print_r(get_class_methods(get_class($q)));


result is

Array ( [0] => __construct [1] => __getfoo [2] => __get [3] => __set )

--
BR,
Matrix

This can be fixed with this simple patch:

Index: Zend/zend_compile.c
===================================================================
RCS file: /repository/ZendEngine2/zend_compile.c,v
retrieving revision 1.412
diff -u -r1.412 zend_compile.c
--- Zend/zend_compile.c	11 Apr 2003 17:30:41 -0000	1.412
+++ Zend/zend_compile.c	19 Apr 2003 14:20:02 -0000
@@ -1611,27 +1611,13 @@
 
 static void do_inherit_parent_constructor(zend_class_entry *ce)
 {
-	zend_function *function;
-
-	if (!ce->parent || ce->constructor) {
-		return;
-	}
+    zend_function *function;
 
-	if (!zend_hash_exists(&ce->function_table, ce->name, ce->name_length+1)) {
-		if (zend_hash_find(&ce->parent->function_table, ce->parent->name, ce->parent->name_length+1, (void **) &function)==SUCCESS) {
-			/* inherit parent's constructor */
-			zend_hash_update(&ce->function_table, ce->name, ce->name_length+1, function, sizeof(zend_function), NULL);
-			function_add_ref(function);
-		}
-	}
-	if (zend_hash_find(&ce->parent->function_table, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME), (void **) &function)==SUCCESS) {
-		/* inherit parent's constructor */
-		zend_hash_update(&ce->function_table, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME), function, sizeof(zend_function), NULL);
-		function_add_ref(function);
-	}
-	ce->constructor = ce->parent->constructor;
+    if (!ce->parent) {
+        return;
+    }
     if (!ce->__get) {
-        ce->__get   = ce->parent->__get;
+        ce->__get = ce->parent->__get;
     }
     if (!ce->__set) {
         ce->__set = ce->parent->__set;
@@ -1639,7 +1625,24 @@
     if (!ce->__call) {
         ce->__call = ce->parent->__call;
     }
-	ce->create_object = ce->parent->create_object;
+    if (ce->constructor) {
+        return;
+    }
+
+    if (!zend_hash_exists(&ce->function_table, ce->name, ce->name_length+1)) {
+        if (zend_hash_find(&ce->parent->function_table, ce->parent->name, ce->parent->name_length+1, (void **) &function)==SUCCESS) {
+            /* inherit parent's constructor */
+            zend_hash_update(&ce->function_table, ce->name, ce->name_length+1, function, sizeof(zend_function), NULL);
+            function_add_ref(function);
+        }
+    }
+    if (zend_hash_find(&ce->parent->function_table, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME), (void **) &function)==SUCCESS) {
+        /* inherit parent's constructor */
+        zend_hash_update(&ce->function_table, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME), function, sizeof(zend_function), NULL);
+        function_add_ref(function);
+    }
+    ce->constructor = ce->parent->constructor;
+    ce->create_object = ce->parent->create_object;
 }

This bug has been fixed in CVS.

In case this was a PHP problem, snapshots of the sources are packaged
every three hours; this change will be in the next snapshot. You can
grab the snapshot at http://snaps.php.net/.
 
In case this was a documentation problem, the fix will show up soon at
http://www.php.net/manual/.

In case this was a PHP.net website problem, the change will show
up on the PHP.net site and on the mirror sites in short time.
 
Thank you for the report, and for helping us make PHP better.