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<?php function fib() { static $i = 1; static $k = 0; $boof = $k; $k = $i + $k; $i = $boof; return $k; } fib(); fib(); fib(); fib(); fib(); fib(); echo $fib_result = fib();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FPB2R
function name:  (null)
number of ops:  17
compiled vars:  !0 = $fib_result
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   14     0  E >   INIT_FCALL                                               'fib'
          1        DO_FCALL                                      0          
   15     2        INIT_FCALL                                               'fib'
          3        DO_FCALL                                      0          
   16     4        INIT_FCALL                                               'fib'
          5        DO_FCALL                                      0          
   17     6        INIT_FCALL                                               'fib'
          7        DO_FCALL                                      0          
   18     8        INIT_FCALL                                               'fib'
          9        DO_FCALL                                      0          
   19    10        INIT_FCALL                                               'fib'
         11        DO_FCALL                                      0          
   20    12        INIT_FCALL                                               'fib'
         13        DO_FCALL                                      0  $7      
         14        ASSIGN                                           ~8      !0, $7
         15        ECHO                                                     ~8
         16      > RETURN                                                   1

Function fib:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FPB2R
function name:  fib
number of ops:  8
compiled vars:  !0 = $i, !1 = $k, !2 = $boof
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   BIND_STATIC                                              !0
    5     1        BIND_STATIC                                              !1
    7     2        ASSIGN                                                   !2, !1
    8     3        ADD                                              ~4      !0, !1
          4        ASSIGN                                                   !1, ~4
    9     5        ASSIGN                                                   !0, !2
   10     6      > RETURN                                                   !1
   12     7*     > RETURN                                                   null

End of function fib

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