3v4l.org

run code in 300+ PHP versions simultaneously
<?php define("EXPREG","/^(\s*\n*'[\d]+(-\d+)?')(\s*\n+\s*'[\d]+(-\d+)?')*\n*\s*$/i"); function test($raw){ if(preg_match(EXPREG,$raw)){ return json_encode(true); }else{ return json_encode(preg_last_error()); } } $raw="'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n'12345'\n "; $r=test($raw); echo $r;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MdNEf
function name:  (null)
number of ops:  11
compiled vars:  !0 = $raw, !1 = $r
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'define'
          1        SEND_VAL                                                 'EXPREG'
          2        SEND_VAL                                                 '%2F%5E%28%5Cs%2A%0A%2A%27%5B%5Cd%5D%2B%28-%5Cd%2B%29%3F%27%29%28%5Cs%2A%0A%2B%5Cs%2A%27%5B%5Cd%5D%2B%28-%5Cd%2B%29%3F%27%29%2A%0A%2A%5Cs%2A%24%2Fi'
          3        DO_ICALL                                                 
   11     4        ASSIGN                                                   !0, '%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%2712345%27%0A%0A'
   14     5        INIT_FCALL                                               'test'
          6        SEND_VAR                                                 !0
          7        DO_FCALL                                      0  $4      
          8        ASSIGN                                                   !1, $4
   15     9        ECHO                                                     !1
         10      > RETURN                                                   1

Function test:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 12
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MdNEf
function name:  test
number of ops:  19
compiled vars:  !0 = $raw
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        INIT_FCALL                                               'preg_match'
          2        FETCH_CONSTANT                                   ~1      'EXPREG'
          3        SEND_VAL                                                 ~1
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6      > JMPZ                                                     $2, ->12
    5     7    >   INIT_FCALL                                               'json_encode'
          8        SEND_VAL                                                 <true>
          9        DO_ICALL                                         $3      
         10      > RETURN                                                   $3
         11*       JMP                                                      ->18
    7    12    >   INIT_FCALL                                               'json_encode'
         13        INIT_FCALL                                               'preg_last_error'
         14        DO_ICALL                                         $4      
         15        SEND_VAR                                                 $4
         16        DO_ICALL                                         $5      
         17      > RETURN                                                   $5
    9    18*     > RETURN                                                   null

End of function test

Generated using Vulcan Logic Dumper, using php 8.0.0

preferences:
146.89 ms | 1407 KiB | 22 Q