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<?php function foo (string $a) { var_dump($a); } $a = "a"; foo($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2HpU1
function name:  (null)
number of ops:  5
compiled vars:  !0 = $a
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   7     0  E >   QM_ASSIGN                                                !0
   8     1        INIT_FCALL                                               'foo'
         2        SEND_VAR                                                 !0
         3        DO_FCALL                                      0          
         4      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2HpU1
function name:  foo
number of ops:  5
compiled vars:  !0 = $a
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   RECV                                             !0      
   4     1        INIT_FCALL                                               'var_dump'
         2        SEND_VAR                                                 !0
         3        DO_ICALL                                                 
   5     4      > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 7.4.0