3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo '<table>'; for ($i=0;$i<8;$i++) { echo '<tr>'; if($i==0 || $i==7) { for($j=0;$j<8;$j++) { ?> <td style="background: grey; height:10px; width:10px"></td> <?php } } else { for($j=0;$j<8;$j++) { if ($j==0 || $j==7) { ?> <td style="background: grey; height:10px; width:10px"></td> <?php } else { ?> <td style="background: white; height:10px; width:10px"></td> <?php } } } echo '</tr>'; } echo '</table>'; echo $i; echo $j ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 31
Branch analysis from position: 31
2 jumps found. (Code = 44) Position 1 = 33, Position 2 = 3
Branch analysis from position: 33
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
2 jumps found. (Code = 47) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 16
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 11
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 29
Branch analysis from position: 29
2 jumps found. (Code = 44) Position 1 = 33, Position 2 = 3
Branch analysis from position: 33
Branch analysis from position: 3
Branch analysis from position: 11
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 11
Branch analysis from position: 15
Branch analysis from position: 11
Branch analysis from position: 16
1 jumps found. (Code = 42) Position 1 = 27
Branch analysis from position: 27
2 jumps found. (Code = 44) Position 1 = 29, Position 2 = 18
Branch analysis from position: 29
Branch analysis from position: 18
2 jumps found. (Code = 47) Position 1 = 20, Position 2 = 22
Branch analysis from position: 20
2 jumps found. (Code = 43) Position 1 = 23, Position 2 = 25
Branch analysis from position: 23
1 jumps found. (Code = 42) Position 1 = 26
Branch analysis from position: 26
2 jumps found. (Code = 44) Position 1 = 29, Position 2 = 18
Branch analysis from position: 29
Branch analysis from position: 18
Branch analysis from position: 25
2 jumps found. (Code = 44) Position 1 = 29, Position 2 = 18
Branch analysis from position: 29
Branch analysis from position: 18
Branch analysis from position: 22
Branch analysis from position: 8
filename:       /in/uiW1B
function name:  (null)
number of ops:  37
compiled vars:  !0 = $i, !1 = $j
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   ECHO                                                     '%3Ctable%3E'
    9     1        ASSIGN                                                   !0, 0
          2      > JMP                                                      ->31
   13     3    >   ECHO                                                     '%3Ctr%3E'
   15     4        IS_EQUAL                                         ~3      !0, 0
          5      > JMPNZ_EX                                         ~3      ~3, ->8
          6    >   IS_EQUAL                                         ~4      !0, 7
          7        BOOL                                             ~3      ~4
          8    > > JMPZ                                                     ~3, ->16
   19     9    >   ASSIGN                                                   !1, 0
         10      > JMP                                                      ->13
   24    11    >   ECHO                                                     '%0A++++++++++++++++%3Ctd+style%3D%22background%3A+grey%3B+height%3A10px%3B+width%3A10px%22%3E%3C%2Ftd%3E%0A%0A++++++++++++'
   19    12        PRE_INC                                                  !1
         13    >   IS_SMALLER                                               !1, 8
         14      > JMPNZ                                                    ~7, ->11
         15    > > JMP                                                      ->29
   37    16    >   ASSIGN                                                   !1, 0
         17      > JMP                                                      ->27
   41    18    >   IS_EQUAL                                         ~9      !1, 0
         19      > JMPNZ_EX                                         ~9      ~9, ->22
         20    >   IS_EQUAL                                         ~10     !1, 7
         21        BOOL                                             ~9      ~10
         22    > > JMPZ                                                     ~9, ->25
   46    23    >   ECHO                                                     '%0A++++++++++++++++++++%3Ctd+style%3D%22background%3A+grey%3B+height%3A10px%3B+width%3A10px%22%3E%3C%2Ftd%3E%0A%0A++++++++++++++++'
         24      > JMP                                                      ->26
   58    25    >   ECHO                                                     '%0A++++++++++++++++++++%3Ctd+style%3D%22background%3A+white%3B+height%3A10px%3B+width%3A10px%22%3E%3C%2Ftd%3E%0A%0A++++++++++++++++'
   37    26    >   PRE_INC                                                  !1
         27    >   IS_SMALLER                                               !1, 8
         28      > JMPNZ                                                    ~12, ->18
   69    29    >   ECHO                                                     '%3C%2Ftr%3E'
    9    30        PRE_INC                                                  !0
         31    >   IS_SMALLER                                               !0, 8
         32      > JMPNZ                                                    ~14, ->3
   73    33    >   ECHO                                                     '%3C%2Ftable%3E'
   74    34        ECHO                                                     !0
   75    35        ECHO                                                     !1
   76    36      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
165.21 ms | 1399 KiB | 13 Q