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<?php var_dump(explode('-', 'r-p')); die(); $dd = '2014-05-08'; //explode function platne_datum($datum) { return preg_match('~^([1-9]|19|[12][0-8]|29(?=\\.([^2]|2\\.(([02468][048]|[13579][26])00|[0-9]{2}(0[48]|[2468][048]|[13579][26]))))|30(?=\\.[^2])|31(?=\\.([13578][02]?\\.)))\\.([1-9]|1[012])\\.[0-9]{4}$~D', $datum); }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 79) Position 1 = -2
filename:       /in/vaXtD
function name:  (null)
number of ops:  10
compiled vars:  !0 = $dd
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'explode'
          2        SEND_VAL                                                 '-'
          3        SEND_VAL                                                 'r-p'
          4        DO_ICALL                                         $1      
          5        SEND_VAR                                                 $1
          6        DO_ICALL                                                 
          7      > EXIT                                                     
    3     8*       ASSIGN                                                   !0, '2014-05-08'
   11     9*     > RETURN                                                   1

Function platne_datum:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vaXtD
function name:  platne_datum
number of ops:  7
compiled vars:  !0 = $datum
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   RECV                                             !0      
   10     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%7E%5E%28%5B1-9%5D%7C19%7C%5B12%5D%5B0-8%5D%7C29%28%3F%3D%5C.%28%5B%5E2%5D%7C2%5C.%28%28%5B02468%5D%5B048%5D%7C%5B13579%5D%5B26%5D%2900%7C%5B0-9%5D%7B2%7D%280%5B48%5D%7C%5B2468%5D%5B048%5D%7C%5B13579%5D%5B26%5D%29%29%29%29%7C30%28%3F%3D%5C.%5B%5E2%5D%29%7C31%28%3F%3D%5C.%28%5B13578%5D%5B02%5D%3F%5C.%29%29%29%5C.%28%5B1-9%5D%7C1%5B012%5D%29%5C.%5B0-9%5D%7B4%7D%24%7ED'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $1      
          5      > RETURN                                                   $1
   11     6*     > RETURN                                                   null

End of function platne_datum

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