3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $start = 6; $list = [ '1楼', '2楼', '3楼', '4楼', '5楼', ]; $list = array_flip( array_map( array_flip($list), function($key){ return $start+(int)$key; } ) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gmOqO
function name:  (null)
number of ops:  15
compiled vars:  !0 = $start, !1 = $list
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   ASSIGN                                                   !0, 6
   5     1        ASSIGN                                                   !1, <array>
   7     2        INIT_FCALL                                               'array_flip'
   8     3        INIT_FCALL                                               'array_map'
   9     4        INIT_FCALL                                               'array_flip'
         5        SEND_VAR                                                 !1
         6        DO_ICALL                                         $4      
         7        SEND_VAR                                                 $4
  10     8        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FgmOqO0x7f055a7cd0d4'
         9        SEND_VAL                                                 ~5
        10        DO_ICALL                                         $6      
        11        SEND_VAR                                                 $6
        12        DO_ICALL                                         $7      
        13        ASSIGN                                                   !1, $7
  12    14      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FgmOqO0x7f055a7cd0d4:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gmOqO
function name:  {closure}
number of ops:  5
compiled vars:  !0 = $key, !1 = $start
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  10     0  E >   RECV                                             !0      
         1        CAST                                          4  ~2      !0
         2        ADD                                              ~3      !1, ~2
         3      > RETURN                                                   ~3
         4*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FgmOqO0x7f055a7cd0d4

Generated using Vulcan Logic Dumper, using php 7.3.0