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<?php $horrible_array_of_stuff = array( array("fname" => "Owen", "sname" => "Dyckhoff", "age" => 27), array("fname" => "Joe", "sname" => "Bloggs", "age" => 36 ) ); usort( $horrible_array_of_stuff, function( $left, $right ) { return [$left->sname, $left->fname, $left->age] <=> [$right->sname, $right->fname, $right->age]; } );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7pjCj
function name:  (null)
number of ops:  7
compiled vars:  !0 = $horrible_array_of_stuff
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    4     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2F7pjCj%3A4%240'
    6     4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
    7     6      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2F7pjCj%3A4%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7pjCj
function name:  {closure}
number of ops:  17
compiled vars:  !0 = $left, !1 = $right
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    5     2        FETCH_OBJ_R                                      ~2      !0, 'sname'
          3        INIT_ARRAY                                       ~3      ~2
          4        FETCH_OBJ_R                                      ~4      !0, 'fname'
          5        ADD_ARRAY_ELEMENT                                ~3      ~4
          6        FETCH_OBJ_R                                      ~5      !0, 'age'
          7        ADD_ARRAY_ELEMENT                                ~3      ~5
          8        FETCH_OBJ_R                                      ~6      !1, 'sname'
          9        INIT_ARRAY                                       ~7      ~6
         10        FETCH_OBJ_R                                      ~8      !1, 'fname'
         11        ADD_ARRAY_ELEMENT                                ~7      ~8
         12        FETCH_OBJ_R                                      ~9      !1, 'age'
         13        ADD_ARRAY_ELEMENT                                ~7      ~9
         14        SPACESHIP                                        ~10     ~3, ~7
         15      > RETURN                                                   ~10
    6    16*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2F7pjCj%3A4%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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