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<?php $arr = array( array('id' => 1, 'version' => '1.3'), array('id' => 2, 'version' => '1.3.1'), array('id' => 3, 'version' => '1.3.2'), array('id' => 4, 'version' => '1.3.2-RC1'), array('id' => 5, 'version' => '1.3.2-RC2'), ); usort($arr, function($a,$b) { return -1 * version_compare ( $a['version'] , $b['version'] ); }); var_dump($arr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/es1os
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>
   11     1        INIT_FCALL                                               'usort'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                          ~2      [0]
   13     4        SEND_VAL                                                 ~2
   11     5        DO_ICALL                                                 
   15     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/es1os
function name:  {closure}
number of ops:  11
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   RECV                                             !0      
          1        RECV                                             !1      
   12     2        INIT_FCALL                                               'version_compare'
          3        FETCH_DIM_R                                      ~2      !0, 'version'
          4        SEND_VAL                                                 ~2
          5        FETCH_DIM_R                                      ~3      !1, 'version'
          6        SEND_VAL                                                 ~3
          7        DO_ICALL                                         $4      
          8        MUL                                              ~5      $4, -1
          9      > RETURN                                                   ~5
   13    10*     > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


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