3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pattern="/^20[12345][34567890]-[01][0-9]-[0123][0-9]$/"; if(preg_match($pattern,"2013-13-40")) { echo "in"; } ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 7
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
filename:       /in/jtDJ6
function name:  (null)
number of ops:  8
compiled vars:  !0 = $pattern
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%2F%5E20%5B12345%5D%5B34567890%5D-%5B01%5D%5B0-9%5D-%5B0123%5D%5B0-9%5D%24%2F'
    3     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 '2013-13-40'
          4        DO_ICALL                                         $2      
          5      > JMPZ                                                     $2, ->7
    5     6    >   ECHO                                                     'in'
    7     7    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
149.06 ms | 1385 KiB | 15 Q