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<?php var_dump($d = date('Y-\WW-w'), date('Y-m-d')); var_dump($t = strtotime($d)); var_dump((new DateTime('@'.$t))->format('Y-\WW-w')); var_dump((new DateTime('@'.$t))->format('Y-m-d')); var_dump(DateTime::createFromFormat('Y-\WW-w', $d));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7BMDB
function name:  (null)
number of ops:  46
compiled vars:  !0 = $d, !1 = $t
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'date'
          2        SEND_VAL                                                 'Y-%5CWW-w'
          3        DO_ICALL                                         $2      
          4        ASSIGN                                           ~3      !0, $2
          5        SEND_VAL                                                 ~3
          6        INIT_FCALL                                               'date'
          7        SEND_VAL                                                 'Y-m-d'
          8        DO_ICALL                                         $4      
          9        SEND_VAR                                                 $4
         10        DO_ICALL                                                 
    4    11        INIT_FCALL                                               'var_dump'
         12        INIT_FCALL                                               'strtotime'
         13        SEND_VAR                                                 !0
         14        DO_ICALL                                         $6      
         15        ASSIGN                                           ~7      !1, $6
         16        SEND_VAL                                                 ~7
         17        DO_ICALL                                                 
    6    18        INIT_FCALL                                               'var_dump'
         19        NEW                                              $9      'DateTime'
         20        CONCAT                                           ~10     '%40', !1
         21        SEND_VAL_EX                                              ~10
         22        DO_FCALL                                      0          
         23        INIT_METHOD_CALL                                         $9, 'format'
         24        SEND_VAL_EX                                              'Y-%5CWW-w'
         25        DO_FCALL                                      0  $12     
         26        SEND_VAR                                                 $12
         27        DO_ICALL                                                 
    7    28        INIT_FCALL                                               'var_dump'
         29        NEW                                              $14     'DateTime'
         30        CONCAT                                           ~15     '%40', !1
         31        SEND_VAL_EX                                              ~15
         32        DO_FCALL                                      0          
         33        INIT_METHOD_CALL                                         $14, 'format'
         34        SEND_VAL_EX                                              'Y-m-d'
         35        DO_FCALL                                      0  $17     
         36        SEND_VAR                                                 $17
         37        DO_ICALL                                                 
    9    38        INIT_FCALL                                               'var_dump'
         39        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
         40        SEND_VAL                                                 'Y-%5CWW-w'
         41        SEND_VAR                                                 !0
         42        DO_FCALL                                      0  $19     
         43        SEND_VAR                                                 $19
         44        DO_ICALL                                                 
         45      > RETURN                                                   1

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