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<?php $array = [ ['x' => 0.5, 'y' => 23], ['x' => 23, 'y' => 21.75], ['x' => 14.25, 'y' => 21.875], ['x' => 19.375, 'y' => 21.75], ['x' => 9.125, 'y' => 21.875], ['x' => 23, 'y' => 19.625], ['x' => 19.375, 'y' => 19.625], ]; foreach ($array as $row) { $result['#' . $row['y']] ??= $row; } var_export(array_values($result));
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 15
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 15
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
filename:       /in/BV0FS
function name:  (null)
number of ops:  23
compiled vars:  !0 = $array, !1 = $row, !2 = $result
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, <array>
   12     1      > FE_RESET_R                                           $4      !0, ->15
          2    > > FE_FETCH_R                                                   $4, !1, ->15
   13     3    >   FETCH_DIM_R                                          ~5      !1, 'y'
          4        CONCAT                                               ~6      '%23', ~5
          5        COPY_TMP                                             ~7      ~6
          6        FETCH_DIM_IS                                         ~8      !2, ~6
          7        COALESCE                                             ~9      ~8
          8        ASSIGN_DIM                                           ~10     !2, ~7
          9        OP_DATA                                                      !1
         10        QM_ASSIGN                                            ~9      ~10
         11      > JMP                                                          ->13
         12*       FREE                                                         ~7
         13    >   FREE                                                         ~9
   12    14      > JMP                                                          ->2
         15    >   FE_FREE                                                      $4
   15    16        INIT_FCALL                                                   'var_export'
         17        INIT_FCALL                                                   'array_values'
         18        SEND_VAR                                                     !2
         19        DO_ICALL                                             $11     
         20        SEND_VAR                                                     $11
         21        DO_ICALL                                                     
         22      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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