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<?php $needYear=2018; $needMonth=10; $_startTime = strtotime('2018-10-31 00:00:00'); $_endTime = strtotime('2018-11-01 00:00:00'); var_dump(date('Y-n', $_startTime), date('Y-n', $_endTime), $needYear . '-' . $needMonth); var_dump(date('Y-m-d', strtotime('last day of ' . $needYear . '-' . $needMonth))); var_dump(date('Y-m-d', strtotime($needYear . '-' . $needMonth . ' last day'))); var_dump(date('Y-m-d', strtotime('first day of ' . $needYear . '-' . $needMonth))); var_dump(date('Y-m-d', strtotime($needYear . '-' . $needMonth . ' first day')));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FbeHv
function name:  (null)
number of ops:  78
compiled vars:  !0 = $needYear, !1 = $needMonth, !2 = $_startTime, !3 = $_endTime
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 2018
    4     1        ASSIGN                                                   !1, 10
    6     2        INIT_FCALL                                               'strtotime'
          3        SEND_VAL                                                 '2018-10-31+00%3A00%3A00'
          4        DO_ICALL                                         $6      
          5        ASSIGN                                                   !2, $6
    7     6        INIT_FCALL                                               'strtotime'
          7        SEND_VAL                                                 '2018-11-01+00%3A00%3A00'
          8        DO_ICALL                                         $8      
          9        ASSIGN                                                   !3, $8
    9    10        INIT_FCALL                                               'var_dump'
         11        INIT_FCALL                                               'date'
         12        SEND_VAL                                                 'Y-n'
         13        SEND_VAR                                                 !2
         14        DO_ICALL                                         $10     
         15        SEND_VAR                                                 $10
         16        INIT_FCALL                                               'date'
         17        SEND_VAL                                                 'Y-n'
         18        SEND_VAR                                                 !3
         19        DO_ICALL                                         $11     
         20        SEND_VAR                                                 $11
         21        CONCAT                                           ~12     !0, '-'
         22        CONCAT                                           ~13     ~12, !1
         23        SEND_VAL                                                 ~13
         24        DO_ICALL                                                 
   11    25        INIT_FCALL                                               'var_dump'
         26        INIT_FCALL                                               'date'
         27        SEND_VAL                                                 'Y-m-d'
         28        INIT_FCALL                                               'strtotime'
         29        CONCAT                                           ~15     'last+day+of+', !0
         30        CONCAT                                           ~16     ~15, '-'
         31        CONCAT                                           ~17     ~16, !1
         32        SEND_VAL                                                 ~17
         33        DO_ICALL                                         $18     
         34        SEND_VAR                                                 $18
         35        DO_ICALL                                         $19     
         36        SEND_VAR                                                 $19
         37        DO_ICALL                                                 
   12    38        INIT_FCALL                                               'var_dump'
         39        INIT_FCALL                                               'date'
         40        SEND_VAL                                                 'Y-m-d'
         41        INIT_FCALL                                               'strtotime'
         42        CONCAT                                           ~21     !0, '-'
         43        CONCAT                                           ~22     ~21, !1
         44        CONCAT                                           ~23     ~22, '+last+day'
         45        SEND_VAL                                                 ~23
         46        DO_ICALL                                         $24     
         47        SEND_VAR                                                 $24
         48        DO_ICALL                                         $25     
         49        SEND_VAR                                                 $25
         50        DO_ICALL                                                 
   13    51        INIT_FCALL                                               'var_dump'
         52        INIT_FCALL                                               'date'
         53        SEND_VAL                                                 'Y-m-d'
         54        INIT_FCALL                                               'strtotime'
         55        CONCAT                                           ~27     'first+day+of+', !0
         56        CONCAT                                           ~28     ~27, '-'
         57        CONCAT                                           ~29     ~28, !1
         58        SEND_VAL                                                 ~29
         59        DO_ICALL                                         $30     
         60        SEND_VAR                                                 $30
         61        DO_ICALL                                         $31     
         62        SEND_VAR                                                 $31
         63        DO_ICALL                                                 
   14    64        INIT_FCALL                                               'var_dump'
         65        INIT_FCALL                                               'date'
         66        SEND_VAL                                                 'Y-m-d'
         67        INIT_FCALL                                               'strtotime'
         68        CONCAT                                           ~33     !0, '-'
         69        CONCAT                                           ~34     ~33, !1
         70        CONCAT                                           ~35     ~34, '+first+day'
         71        SEND_VAL                                                 ~35
         72        DO_ICALL                                         $36     
         73        SEND_VAR                                                 $36
         74        DO_ICALL                                         $37     
         75        SEND_VAR                                                 $37
         76        DO_ICALL                                                 
         77      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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