3v4l.org

run code in 300+ PHP versions simultaneously
<?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                                  '%00%7Bclosure%7D%2Fin%2FmsISD%3A5%240'
    7     4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
    9     6        INIT_FCALL                                               'print_r'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FmsISD%3A5%240:
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}
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 function %00%7Bclosure%7D%2Fin%2FmsISD%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
171.03 ms | 1396 KiB | 17 Q