--- /dev/null
+isset() and empty()
+-----
+<?php
+isset($a);
+isset($a, $b, $c);
+
+empty($a);
+empty(foo());
+empty(array(1, 2, 3));
+-----
+array(
+ 0: Expr_Isset(
+ vars: array(
+ 0: Expr_Variable(
+ name: a
+ )
+ )
+ )
+ 1: Expr_Isset(
+ vars: array(
+ 0: Expr_Variable(
+ name: a
+ )
+ 1: Expr_Variable(
+ name: b
+ )
+ 2: Expr_Variable(
+ name: c
+ )
+ )
+ )
+ 2: Expr_Empty(
+ expr: Expr_Variable(
+ name: a
+ )
+ )
+ 3: Expr_Empty(
+ expr: Expr_FuncCall(
+ name: Name(
+ parts: array(
+ 0: foo
+ )
+ )
+ args: array(
+ )
+ )
+ )
+ 4: Expr_Empty(
+ expr: Expr_Array(
+ items: array(
+ 0: Expr_ArrayItem(
+ key: null
+ value: Scalar_LNumber(
+ value: 1
+ )
+ byRef: false
+ )
+ 1: Expr_ArrayItem(
+ key: null
+ value: Scalar_LNumber(
+ value: 2
+ )
+ byRef: false
+ )
+ 2: Expr_ArrayItem(
+ key: null
+ value: Scalar_LNumber(
+ value: 3
+ )
+ byRef: false
+ )
+ )
+ )
+ )
+)
\ No newline at end of file