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<?php $keys = array(1,2,3,6,9); //note that 9 does not exist as key in the $values array $values = array('000', '001', '002', '003', '004', '005', '006', '007'); $new = array_map( function( $key) use( $values) { return $values[ $key ]; }, $keys); var_dump( $new);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/p0qLs
function name:  (null)
number of ops:  13
compiled vars:  !0 = $keys, !1 = $values, !2 = $new
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        ASSIGN                                                   !1, <array>
    4     2        INIT_FCALL                                               'array_map'
          3        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2Fp0qLs%3A4%240'
          4        BIND_LEXICAL                                             ~5, !1
    6     5        SEND_VAL                                                 ~5
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $6      
    4     8        ASSIGN                                                   !2, $6
    7     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAR                                                 !2
         11        DO_ICALL                                                 
         12      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2Fp0qLs%3A4%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/p0qLs
function name:  {closure}
number of ops:  5
compiled vars:  !0 = $key, !1 = $values
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
          1        BIND_STATIC                                              !1
    5     2        FETCH_DIM_R                                      ~2      !1, !0
          3      > RETURN                                                   ~2
    6     4*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2Fp0qLs%3A4%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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