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<?php $array = [ 'DC, Maryland, Northern-Virginia', 'North-Carolina, Virginia', ]; $result = []; foreach ($array as $string) { array_push($result, ...explode(', ', $string)); } var_export($result);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 14
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 14
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
filename:       /in/tRKV4
function name:  (null)
number of ops:  19
compiled vars:  !0 = $array, !1 = $result, !2 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    8     1        ASSIGN                                                   !1, <array>
    9     2      > FE_RESET_R                                       $5      !0, ->14
          3    > > FE_FETCH_R                                               $5, !2, ->14
   10     4    >   INIT_FCALL                                               'array_push'
          5        SEND_REF                                                 !1
          6        INIT_FCALL                                               'explode'
          7        SEND_VAL                                                 '%2C+'
          8        SEND_VAR                                                 !2
          9        DO_ICALL                                         $6      
         10        SEND_UNPACK                                              $6
         11        CHECK_UNDEF_ARGS                                         
         12        DO_ICALL                                                 
    9    13      > JMP                                                      ->3
         14    >   FE_FREE                                                  $5
   12    15        INIT_FCALL                                               'var_export'
         16        SEND_VAR                                                 !1
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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