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<?php $arr1 = array( 10, 20, 5 ); $arr2 = array( 15, 25, 2 ); array_sort($arr1); array_sort($arr2); var_dump(array_shift($arr1), array_shift($arr2));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/48fqp
function name:  (null)
number of ops:  19
compiled vars:  !0 = $arr1, !1 = $arr2
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   4     0  E >   ASSIGN                                                   !0, <array>
  10     1        ASSIGN                                                   !1, <array>
  15     2        INIT_FCALL_BY_NAME                                       'array_sort'
         3        SEND_VAR_EX                                              !0
         4        DO_FCALL                                      0          
  16     5        INIT_FCALL_BY_NAME                                       'array_sort'
         6        SEND_VAR_EX                                              !1
         7        DO_FCALL                                      0          
  18     8        INIT_FCALL                                               'var_dump'
         9        INIT_FCALL                                               'array_shift'
        10        SEND_REF                                                 !0
        11        DO_ICALL                                         $6      
        12        SEND_VAR                                                 $6
        13        INIT_FCALL                                               'array_shift'
        14        SEND_REF                                                 !1
        15        DO_ICALL                                         $7      
        16        SEND_VAR                                                 $7
        17        DO_ICALL                                                 
        18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0