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<?php function getYearsBetween( \DateTimeImmutable $startDate, \DateTimeImmutable $endDate, ): int { $dateInterval = $startDate->diff($endDate); return $endDate > $startDate ? $dateInterval->y : -$dateInterval->y; } $start = new \DateTimeImmutable('2000-11-01 09:29:22.907606', new \DateTimeZone('America/Chicago')); $end = new \DateTimeImmutable('2022-06-06 11:00:00.000000', new \DateTimeZone('America/New_York')); $end = $end->setTimezone(new \DateTimeZone('America/Chicago')); $result = getYearsBetween($start, $end); var_export($result);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9KCZE
function name:  (null)
number of ops:  32
compiled vars:  !0 = $start, !1 = $end, !2 = $result
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   11     0  E >   NEW                                                  $3      'DateTimeImmutable'
          1        SEND_VAL_EX                                                  '2000-11-01+09%3A29%3A22.907606'
          2        NEW                                                  $4      'DateTimeZone'
          3        SEND_VAL_EX                                                  'America%2FChicago'
          4        DO_FCALL                                          0          
          5        SEND_VAR_NO_REF_EX                                           $4
          6        DO_FCALL                                          0          
          7        ASSIGN                                                       !0, $3
   12     8        NEW                                                  $8      'DateTimeImmutable'
          9        SEND_VAL_EX                                                  '2022-06-06+11%3A00%3A00.000000'
         10        NEW                                                  $9      'DateTimeZone'
         11        SEND_VAL_EX                                                  'America%2FNew_York'
         12        DO_FCALL                                          0          
         13        SEND_VAR_NO_REF_EX                                           $9
         14        DO_FCALL                                          0          
         15        ASSIGN                                                       !1, $8
   13    16        INIT_METHOD_CALL                                             !1, 'setTimezone'
         17        NEW                                                  $13     'DateTimeZone'
         18        SEND_VAL_EX                                                  'America%2FChicago'
         19        DO_FCALL                                          0          
         20        SEND_VAR_NO_REF_EX                                           $13
         21        DO_FCALL                                          0  $15     
         22        ASSIGN                                                       !1, $15
   14    23        INIT_FCALL                                                   'getyearsbetween'
         24        SEND_VAR                                                     !0
         25        SEND_VAR                                                     !1
         26        DO_FCALL                                          0  $17     
         27        ASSIGN                                                       !2, $17
   15    28        INIT_FCALL                                                   'var_export'
         29        SEND_VAR                                                     !2
         30        DO_ICALL                                                     
         31      > RETURN                                                       1

Function getyearsbetween:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 8, Position 2 = 11
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9KCZE
function name:  getYearsBetween
number of ops:  18
compiled vars:  !0 = $startDate, !1 = $endDate, !2 = $dateInterval
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   RECV                                                 !0      
    5     1        RECV                                                 !1      
    7     2        INIT_METHOD_CALL                                             !0, 'diff'
          3        SEND_VAR_EX                                                  !1
          4        DO_FCALL                                          0  $3      
          5        ASSIGN                                                       !2, $3
    8     6        IS_SMALLER                                                   !0, !1
          7      > JMPZ                                                         ~5, ->11
          8    >   FETCH_OBJ_R                                          ~6      !2, 'y'
          9        QM_ASSIGN                                            ~7      ~6
         10      > JMP                                                          ->14
         11    >   FETCH_OBJ_R                                          ~8      !2, 'y'
         12        MUL                                                  ~9      ~8, -1
         13        QM_ASSIGN                                            ~7      ~9
         14    >   VERIFY_RETURN_TYPE                                           ~7
         15      > RETURN                                                       ~7
    9    16*       VERIFY_RETURN_TYPE                                           
         17*     > RETURN                                                       null

End of function getyearsbetween

Generated using Vulcan Logic Dumper, using php 8.5.0


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