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<?php $lat1 = 35.697959; $lat2 = 35.697959; $lon1 = 139.707085; $lon2 = 139.707085; $theta = $lon1 - $lon2; $dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) + cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta)); var_dump($dist); $dist = acos($dist); var_dump($dist); $dist = 1; $dist = acos($dist); var_dump($dist);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BWsO8
function name:  (null)
number of ops:  60
compiled vars:  !0 = $lat1, !1 = $lat2, !2 = $lon1, !3 = $lon2, !4 = $theta, !5 = $dist
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 35.698
    4     1        ASSIGN                                                   !1, 35.698
    5     2        ASSIGN                                                   !2, 139.707
    6     3        ASSIGN                                                   !3, 139.707
    7     4        SUB                                              ~10     !2, !3
          5        ASSIGN                                                   !4, ~10
    8     6        INIT_FCALL                                               'sin'
          7        INIT_FCALL                                               'deg2rad'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                         $12     
         10        SEND_VAR                                                 $12
         11        DO_ICALL                                         $13     
         12        INIT_FCALL                                               'sin'
         13        INIT_FCALL                                               'deg2rad'
         14        SEND_VAR                                                 !1
         15        DO_ICALL                                         $14     
         16        SEND_VAR                                                 $14
         17        DO_ICALL                                         $15     
         18        MUL                                              ~16     $13, $15
         19        INIT_FCALL                                               'cos'
         20        INIT_FCALL                                               'deg2rad'
         21        SEND_VAR                                                 !0
         22        DO_ICALL                                         $17     
         23        SEND_VAR                                                 $17
         24        DO_ICALL                                         $18     
         25        INIT_FCALL                                               'cos'
         26        INIT_FCALL                                               'deg2rad'
         27        SEND_VAR                                                 !1
         28        DO_ICALL                                         $19     
         29        SEND_VAR                                                 $19
         30        DO_ICALL                                         $20     
         31        MUL                                              ~21     $18, $20
         32        INIT_FCALL                                               'cos'
         33        INIT_FCALL                                               'deg2rad'
         34        SEND_VAR                                                 !4
         35        DO_ICALL                                         $22     
         36        SEND_VAR                                                 $22
         37        DO_ICALL                                         $23     
         38        MUL                                              ~24     $23, ~21
         39        ADD                                              ~25     ~16, ~24
         40        ASSIGN                                                   !5, ~25
   10    41        INIT_FCALL                                               'var_dump'
         42        SEND_VAR                                                 !5
         43        DO_ICALL                                                 
   12    44        INIT_FCALL                                               'acos'
         45        SEND_VAR                                                 !5
         46        DO_ICALL                                         $28     
         47        ASSIGN                                                   !5, $28
   14    48        INIT_FCALL                                               'var_dump'
         49        SEND_VAR                                                 !5
         50        DO_ICALL                                                 
   16    51        ASSIGN                                                   !5, 1
   17    52        INIT_FCALL                                               'acos'
         53        SEND_VAR                                                 !5
         54        DO_ICALL                                         $32     
         55        ASSIGN                                                   !5, $32
   18    56        INIT_FCALL                                               'var_dump'
         57        SEND_VAR                                                 !5
         58        DO_ICALL                                                 
         59      > RETURN                                                   1

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