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<?php $arr=array("aa", "az", "an","am", "ba", "by", "alien","i"); usort($arr, function ($a, $b) { return strlen($a) == strlen($b) ? $a <=> $b : strlen($a) <=> strlen($b); }); print_r($arr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/msISD
function name:  (null)
number of ops:  10
compiled vars:  !0 = $arr
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    5     1        INIT_FCALL                                                   'usort'
          2        SEND_REF                                                     !0
          3        DECLARE_LAMBDA_FUNCTION                              ~2      [0]
    7     4        SEND_VAL                                                     ~2
    5     5        DO_ICALL                                                     
    9     6        INIT_FCALL                                                   'print_r'
          7        SEND_VAR                                                     !0
          8        DO_ICALL                                                     
          9      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 9
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/msISD
function name:  {closure:/in/msISD:5}
number of ops:  15
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
    6     2        STRLEN                                               ~2      !0
          3        STRLEN                                               ~3      !1
          4        IS_EQUAL                                                     ~2, ~3
          5      > JMPZ                                                         ~4, ->9
          6    >   SPACESHIP                                            ~5      !0, !1
          7        QM_ASSIGN                                            ~6      ~5
          8      > JMP                                                          ->13
          9    >   STRLEN                                               ~7      !0
         10        STRLEN                                               ~8      !1
         11        SPACESHIP                                            ~9      ~7, ~8
         12        QM_ASSIGN                                            ~6      ~9
         13    > > RETURN                                                       ~6
    7    14*     > RETURN                                                       null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.5.0


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