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<?php function rev($str) { if ( ! $str ) { return; } return rev(substr($str,1)).$str[0]; } echo rev('hola mundo');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FsPcB
function name:  (null)
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                               'rev'
          1        SEND_VAL                                                 'hola+mundo'
          2        DO_FCALL                                      0  $0      
          3        ECHO                                                     $0
          4      > RETURN                                                   1

Function rev:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 4
Branch analysis from position: 3
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FsPcB
function name:  rev
number of ops:  15
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    3     1        BOOL_NOT                                         ~1      !0
          2      > JMPZ                                                     ~1, ->4
    4     3    > > RETURN                                                   null
    6     4    >   INIT_FCALL_BY_NAME                                       'rev'
          5        INIT_FCALL                                               'substr'
          6        SEND_VAR                                                 !0
          7        SEND_VAL                                                 1
          8        DO_ICALL                                         $2      
          9        SEND_VAR_NO_REF_EX                                       $2
         10        DO_FCALL                                      0  $3      
         11        FETCH_DIM_R                                      ~4      !0, 0
         12        CONCAT                                           ~5      $3, ~4
         13      > RETURN                                                   ~5
    7    14*     > RETURN                                                   null

End of function rev

Generated using Vulcan Logic Dumper, using php 8.0.0


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