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<?php //declare(strict_types=1); function foo(float $x): int { var_dump($x); return $x; } var_dump(foo(1)); //var_dump(foo(1.1));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/F6jts
function name:  (null)
number of ops:  7
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   11     0  E >   INIT_FCALL                                                   'var_dump'
          1        INIT_FCALL                                                   'foo'
          2        SEND_VAL                                                     1
          3        DO_FCALL                                          0  $0      
          4        SEND_VAR                                                     $0
          5        DO_ICALL                                                     
   12     6      > RETURN                                                       1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/F6jts
function name:  foo
number of ops:  8
compiled vars:  !0 = $x
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E >   RECV                                                 !0      
    6     1        INIT_FCALL                                                   'var_dump'
          2        SEND_VAR                                                     !0
          3        DO_ICALL                                                     
    8     4        VERIFY_RETURN_TYPE                                           !0
          5      > RETURN                                                       !0
    9     6*       VERIFY_RETURN_TYPE                                           
          7*     > RETURN                                                       null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.5.0


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