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<?php $inputs = [ '66 X, 55 Y, Z', '66 X, 55 Y,', '66 X, Z', '55 Y, Z', '66 X,', '55 Y', '44 Z' ]; foreach ($inputs as $input) { if (preg_match('~(?:(\d+) X,? ?)?(?:(\d+) Y)?~', $input, $out)) { echo (isset($out[1]) && $out[1] !== '') ? $out[1] : 'null'; // if zero is a project-impossibility, only use !empty() echo " - "; echo isset($out[2]) ? $out[2] : 'null'; echo "\t\t\t(from: $input)\n"; } }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 33
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 33
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 32
Branch analysis from position: 9
2 jumps found. (Code = 46) Position 1 = 11, Position 2 = 14
Branch analysis from position: 11
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 18
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 19
Branch analysis from position: 19
2 jumps found. (Code = 43) Position 1 = 23, Position 2 = 26
Branch analysis from position: 23
1 jumps found. (Code = 42) Position 1 = 27
Branch analysis from position: 27
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 26
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 18
2 jumps found. (Code = 43) Position 1 = 23, Position 2 = 26
Branch analysis from position: 23
Branch analysis from position: 26
Branch analysis from position: 14
Branch analysis from position: 32
Branch analysis from position: 33
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 33
filename:       /in/FvUG4
function name:  (null)
number of ops:  35
compiled vars:  !0 = $inputs, !1 = $input, !2 = $out
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
   11     1      > FE_RESET_R                                       $4      !0, ->33
          2    > > FE_FETCH_R                                               $4, !1, ->33
   12     3    >   INIT_FCALL                                               'preg_match'
          4        SEND_VAL                                                 '%7E%28%3F%3A%28%5Cd%2B%29+X%2C%3F+%3F%29%3F%28%3F%3A%28%5Cd%2B%29+Y%29%3F%7E'
          5        SEND_VAR                                                 !1
          6        SEND_REF                                                 !2
          7        DO_ICALL                                         $5      
          8      > JMPZ                                                     $5, ->32
   13     9    >   ISSET_ISEMPTY_DIM_OBJ                         0  ~6      !2, 1
         10      > JMPZ_EX                                          ~6      ~6, ->14
         11    >   FETCH_DIM_R                                      ~7      !2, 1
         12        IS_NOT_IDENTICAL                                 ~8      ~7, ''
         13        BOOL                                             ~6      ~8
         14    > > JMPZ                                                     ~6, ->18
         15    >   FETCH_DIM_R                                      ~9      !2, 1
         16        QM_ASSIGN                                        ~10     ~9
         17      > JMP                                                      ->19
         18    >   QM_ASSIGN                                        ~10     'null'
         19    >   ECHO                                                     ~10
   14    20        ECHO                                                     '+-+'
   15    21        ISSET_ISEMPTY_DIM_OBJ                         0          !2, 2
         22      > JMPZ                                                     ~11, ->26
         23    >   FETCH_DIM_R                                      ~12     !2, 2
         24        QM_ASSIGN                                        ~13     ~12
         25      > JMP                                                      ->27
         26    >   QM_ASSIGN                                        ~13     'null'
         27    >   ECHO                                                     ~13
   16    28        ROPE_INIT                                     3  ~15     '%09%09%09%28from%3A+'
         29        ROPE_ADD                                      1  ~15     ~15, !1
         30        ROPE_END                                      2  ~14     ~15, '%29%0A'
         31        ECHO                                                     ~14
   11    32    > > JMP                                                      ->2
         33    >   FE_FREE                                                  $4
   18    34      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
289.87 ms | 1015 KiB | 14 Q