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<?php $str = '_10_1_18_4_9_14_ _'; $letters = str_repeat('A', substr_count($str, '_')); $limit = 100; for ($i = 0; $i < $limit; $i++) { echo interpolate($str, str_split($letters)), PHP_EOL; $letters++; } function interpolate($str, $letters) { while (($pos = strpos($str, '_')) !== false) { $str[$pos] = array_shift($letters); } return $str; }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 24
Branch analysis from position: 24
2 jumps found. (Code = 44) Position 1 = 26, Position 2 = 13
Branch analysis from position: 26
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 26, Position 2 = 13
Branch analysis from position: 26
Branch analysis from position: 13
filename:       /in/GAEJN
function name:  (null)
number of ops:  27
compiled vars:  !0 = $str, !1 = $letters, !2 = $limit, !3 = $i
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, '_10_1_18_4_9_14_+_'
    3     1        INIT_FCALL                                                   'str_repeat'
          2        SEND_VAL                                                     'A'
          3        INIT_FCALL                                                   'substr_count'
          4        SEND_VAR                                                     !0
          5        SEND_VAL                                                     '_'
          6        DO_ICALL                                             $5      
          7        SEND_VAR                                                     $5
          8        DO_ICALL                                             $6      
          9        ASSIGN                                                       !1, $6
    5    10        ASSIGN                                                       !2, 100
    7    11        ASSIGN                                                       !3, 0
         12      > JMP                                                          ->24
    8    13    >   INIT_FCALL_BY_NAME                                           'interpolate'
         14        SEND_VAR_EX                                                  !0
         15        INIT_FCALL                                                   'str_split'
         16        SEND_VAR                                                     !1
         17        DO_ICALL                                             $10     
         18        SEND_VAR_NO_REF_EX                                           $10
         19        DO_FCALL                                          0  $11     
         20        ECHO                                                         $11
         21        ECHO                                                         '%0A'
    9    22        PRE_INC                                                      !1
    7    23        PRE_INC                                                      !3
         24    >   IS_SMALLER                                                   !3, !2
         25      > JMPNZ                                                        ~14, ->13
   18    26    > > RETURN                                                       1

Function interpolate:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
2 jumps found. (Code = 44) Position 1 = 12, Position 2 = 3
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
2 jumps found. (Code = 44) Position 1 = 12, Position 2 = 3
Branch analysis from position: 12
Branch analysis from position: 3
filename:       /in/GAEJN
function name:  interpolate
number of ops:  14
compiled vars:  !0 = $str, !1 = $letters, !2 = $pos
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   12     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
   13     2      > JMP                                                          ->8
   14     3    >   INIT_FCALL                                                   'array_shift'
          4        SEND_REF                                                     !1
          5        DO_ICALL                                             $4      
          6        ASSIGN_DIM                                                   !0, !2
          7        OP_DATA                                                      $4
   13     8    >   FRAMELESS_ICALL_2                strpos              ~5      !0, '_'
          9        ASSIGN                                               ~6      !2, ~5
         10        TYPE_CHECK                                      1018          ~6
         11      > JMPNZ                                                        ~7, ->3
   17    12    > > RETURN                                                       !0
   18    13*     > RETURN                                                       null

End of function interpolate

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