3v4l.org

run code in 300+ PHP versions simultaneously
<?php $graph = [ "CityB" => ["0" => "1", "1" => "CityA", "done" => "no"], "CityA" => ["0" => "1", "1" => "CityC", "done" => "no"], "CityD" => ["0" => "1", "1" => "CityD", "done" => "yes"], "CityC" => ["0" => "5", "1" => "CityA", "done" => "no"] ]; $result = []; foreach ($graph as $key => $row) { if ($row['done'] === 'no' && (!isset($result[$key]) || $row[0] < $result[$key])) { $result[$key] = $row[0]; } } echo key($result) ?? 'No "done => no" rows';
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 21
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 21
Branch analysis from position: 4
2 jumps found. (Code = 46) Position 1 = 8, Position 2 = 16
Branch analysis from position: 8
2 jumps found. (Code = 47) Position 1 = 11, Position 2 = 15
Branch analysis from position: 11
2 jumps found. (Code = 43) Position 1 = 17, Position 2 = 20
Branch analysis from position: 17
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 20
Branch analysis from position: 15
Branch analysis from position: 16
Branch analysis from position: 21
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 21
filename:       /in/X4REl
function name:  (null)
number of ops:  29
compiled vars:  !0 = $graph, !1 = $result, !2 = $row, !3 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   10     1        ASSIGN                                                   !1, <array>
   11     2      > FE_RESET_R                                       $6      !0, ->21
          3    > > FE_FETCH_R                                       ~7      $6, !2, ->21
          4    >   ASSIGN                                                   !3, ~7
   12     5        FETCH_DIM_R                                      ~9      !2, 'done'
          6        IS_IDENTICAL                                     ~10     ~9, 'no'
          7      > JMPZ_EX                                          ~10     ~10, ->16
          8    >   ISSET_ISEMPTY_DIM_OBJ                         0  ~11     !1, !3
          9        BOOL_NOT                                         ~12     ~11
         10      > JMPNZ_EX                                         ~12     ~12, ->15
         11    >   FETCH_DIM_R                                      ~13     !2, 0
         12        FETCH_DIM_R                                      ~14     !1, !3
         13        IS_SMALLER                                       ~15     ~13, ~14
         14        BOOL                                             ~12     ~15
         15    >   BOOL                                             ~10     ~12
         16    > > JMPZ                                                     ~10, ->20
   13    17    >   FETCH_DIM_R                                      ~17     !2, 0
         18        ASSIGN_DIM                                               !1, !3
         19        OP_DATA                                                  ~17
   11    20    > > JMP                                                      ->3
         21    >   FE_FREE                                                  $6
   17    22        INIT_FCALL                                               'key'
         23        SEND_VAR                                                 !1
         24        DO_ICALL                                         $18     
         25        COALESCE                                         ~19     $18
         26        QM_ASSIGN                                        ~19     'No+%22done+%3D%3E+no%22+rows'
         27        ECHO                                                     ~19
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
146.91 ms | 1011 KiB | 14 Q