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<?php function foo(&$a) {$a[1] = 1;return $a;}; $b = range(1, 6000); $c = foo($b);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qZGL3
function name:  (null)
number of ops:  10
compiled vars:  !0 = $b, !1 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'range'
          1        SEND_VAL                                                 1
          2        SEND_VAL                                                 6000
          3        DO_ICALL                                         $2      
          4        ASSIGN                                                   !0, $2
    4     5        INIT_FCALL                                               'foo'
          6        SEND_REF                                                 !0
          7        DO_FCALL                                      0  $4      
          8        ASSIGN                                                   !1, $4
          9      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qZGL3
function name:  foo
number of ops:  5
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
          1        ASSIGN_DIM                                               !0, 1
          2        OP_DATA                                                  1
          3      > RETURN                                                   !0
          4*     > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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