3v4l.org

run code in 300+ PHP versions simultaneously
<?php foreach(array(NAN, 0, "0", "") as $y){foreach(array(NAN, 0, "0", "") as $x){printf("%2d", $x <=> $y);}echo "\n";}
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 1, Position 2 = 13
Branch analysis from position: 1
2 jumps found. (Code = 78) Position 1 = 2, Position 2 = 13
Branch analysis from position: 2
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 10
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 10
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 10
1 jumps found. (Code = 42) Position 1 = 1
Branch analysis from position: 1
Branch analysis from position: 10
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/DM8kT
function name:  (null)
number of ops:  15
compiled vars:  !0 = $y, !1 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E > > FE_RESET_R                                       $2      <array>, ->13
          1    > > FE_FETCH_R                                               $2, !0, ->13
          2    > > FE_RESET_R                                       $3      <array>, ->10
          3    > > FE_FETCH_R                                               $3, !1, ->10
          4    >   INIT_FCALL                                               'printf'
          5        SEND_VAL                                                 '%252d'
          6        SPACESHIP                                        ~4      !1, !0
          7        SEND_VAL                                                 ~4
          8        DO_ICALL                                                 
          9      > JMP                                                      ->3
         10    >   FE_FREE                                                  $3
         11        ECHO                                                     '%0A'
         12      > JMP                                                      ->1
         13    >   FE_FREE                                                  $2
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
169.55 ms | 1386 KiB | 15 Q