text: <?php
  
  $a = $b ? $c : $d;
  -----
  Block#1
      Stmt_JumpIf
          cond: Var#1<$b>
          if: Block#2
          else: Block#3
  
  Block#2
      Parent: Block#1
      Expr_Assign
          var: Var#2
          expr: Var#3<$c>
          result: Var#4
      Stmt_Jump
          target: Block#4
  
  Block#3
      Parent: Block#1
      Expr_Assign
          var: Var#5
          expr: Var#6<$d>
          result: Var#7
      Stmt_Jump
          target: Block#4
  
  Block#4
      Parent: Block#2
      Parent: Block#3
      Var#8 = Phi(Var#2, Var#5)
      Expr_Assign
          var: Var#9<$a>
          expr: Var#8
          result: Var#10
      Terminal_Return