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<?php $array = explode(',', 'Katha,pooja,singer,katha'); $result = []; foreach ($array as $value) { $result[strtolower($value)] ??= $value; } var_export(array_values($result));
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 7, Position 2 = 21
Branch analysis from position: 7
2 jumps found. (Code = 78) Position 1 = 8, Position 2 = 21
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 19
Branch analysis from position: 19
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
Branch analysis from position: 21
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 21
filename:       /in/UeiLP
function name:  (null)
number of ops:  29
compiled vars:  !0 = $array, !1 = $result, !2 = $value
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'explode'
          1        SEND_VAL                                                 '%2C'
          2        SEND_VAL                                                 'Katha%2Cpooja%2Csinger%2Ckatha'
          3        DO_ICALL                                         $3      
          4        ASSIGN                                                   !0, $3
    5     5        ASSIGN                                                   !1, <array>
    6     6      > FE_RESET_R                                       $6      !0, ->21
          7    > > FE_FETCH_R                                               $6, !2, ->21
    7     8    >   INIT_FCALL                                               'strtolower'
          9        SEND_VAR                                                 !2
         10        DO_ICALL                                         $7      
         11        COPY_TMP                                         $8      $7
         12        FETCH_DIM_IS                                     ~9      !1, $7
         13        COALESCE                                         ~10     ~9
         14        ASSIGN_DIM                                       ~11     !1, $8
         15        OP_DATA                                                  !2
         16        QM_ASSIGN                                        ~10     ~11
         17      > JMP                                                      ->19
         18*       FREE                                                     $8
         19    >   FREE                                                     ~10
    6    20      > JMP                                                      ->7
         21    >   FE_FREE                                                  $6
    9    22        INIT_FCALL                                               'var_export'
         23        INIT_FCALL                                               'array_values'
         24        SEND_VAR                                                 !1
         25        DO_ICALL                                         $12     
         26        SEND_VAR                                                 $12
         27        DO_ICALL                                                 
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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