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<?php date_default_timezone_set('UTC'); $time=-62167046400; // 0000-01-03 0-01-1 var_dump(date('Y-m-d o-W-N', $time - 86400)); var_dump(date('Y-m-d o-W-N', $time - 86400 * 2)); var_dump(date('Y-m-d o-W-N', $time - 86400 * 3), 'The issue appeared here. Expected: 0000-01-02 -1-52-5'); var_dump(date('Y-m-d o-W-N', $time - 86400 * 4)); var_dump(date('Y-m-d o-W-N', $time - 86400 * 5));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4Glr2
function name:  (null)
number of ops:  46
compiled vars:  !0 = $time
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'date_default_timezone_set'
          1        SEND_VAL                                                 'UTC'
          2        DO_ICALL                                                 
    4     3        ASSIGN                                                   !0, -62167046400
    6     4        INIT_FCALL                                               'var_dump'
          5        INIT_FCALL                                               'date'
          6        SEND_VAL                                                 'Y-m-d+o-W-N'
          7        SUB                                              ~3      !0, 86400
          8        SEND_VAL                                                 ~3
          9        DO_ICALL                                         $4      
         10        SEND_VAR                                                 $4
         11        DO_ICALL                                                 
    7    12        INIT_FCALL                                               'var_dump'
         13        INIT_FCALL                                               'date'
         14        SEND_VAL                                                 'Y-m-d+o-W-N'
         15        SUB                                              ~6      !0, 172800
         16        SEND_VAL                                                 ~6
         17        DO_ICALL                                         $7      
         18        SEND_VAR                                                 $7
         19        DO_ICALL                                                 
    8    20        INIT_FCALL                                               'var_dump'
         21        INIT_FCALL                                               'date'
         22        SEND_VAL                                                 'Y-m-d+o-W-N'
         23        SUB                                              ~9      !0, 259200
         24        SEND_VAL                                                 ~9
         25        DO_ICALL                                         $10     
         26        SEND_VAR                                                 $10
         27        SEND_VAL                                                 'The+issue+appeared+here.+Expected%3A+0000-01-02+-1-52-5'
         28        DO_ICALL                                                 
    9    29        INIT_FCALL                                               'var_dump'
         30        INIT_FCALL                                               'date'
         31        SEND_VAL                                                 'Y-m-d+o-W-N'
         32        SUB                                              ~12     !0, 345600
         33        SEND_VAL                                                 ~12
         34        DO_ICALL                                         $13     
         35        SEND_VAR                                                 $13
         36        DO_ICALL                                                 
   10    37        INIT_FCALL                                               'var_dump'
         38        INIT_FCALL                                               'date'
         39        SEND_VAL                                                 'Y-m-d+o-W-N'
         40        SUB                                              ~15     !0, 432000
         41        SEND_VAL                                                 ~15
         42        DO_ICALL                                         $16     
         43        SEND_VAR                                                 $16
         44        DO_ICALL                                                 
         45      > RETURN                                                   1

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