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<?php $data = [ 'Newcastle Upon Tyne, Tyne and Wear, England' => 18, 'Gateshead, Tyne and Wear, England' => 17, 'Sunderland, Tyne and Wear, England' => 3, ]; $result = []; foreach($data as $key=>$value){ $result[explode(',',$key)[0]] = $value; } print_r($result);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 13
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 13
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/1QQna
function name:  (null)
number of ops:  18
compiled vars:  !0 = $data, !1 = $result, !2 = $value, !3 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    9     1        ASSIGN                                                   !1, <array>
   10     2      > FE_RESET_R                                       $6      !0, ->13
          3    > > FE_FETCH_R                                       ~7      $6, !2, ->13
          4    >   ASSIGN                                                   !3, ~7
   11     5        INIT_FCALL                                               'explode'
          6        SEND_VAL                                                 '%2C'
          7        SEND_VAR                                                 !3
          8        DO_ICALL                                         $9      
          9        FETCH_DIM_R                                      ~10     $9, 0
         10        ASSIGN_DIM                                               !1, ~10
         11        OP_DATA                                                  !2
   10    12      > JMP                                                      ->3
         13    >   FE_FREE                                                  $6
   14    14        INIT_FCALL                                               'print_r'
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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