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<?php $lat = 60; $lon = 160; $zoom = 3; $nLon = ($lon / 360) + 0.5; $nLat = abs((asinh(tan(deg2rad($lat))) / M_PI / 2) - 0.5); $scale = 1 << $zoom; $tileX = (int)($nLon * $scale); $tileY = (int)($nLat * $scale); var_dump($tileX, $tileY);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/pZZ7i
function name:  (null)
number of ops:  35
compiled vars:  !0 = $lat, !1 = $lon, !2 = $zoom, !3 = $nLon, !4 = $nLat, !5 = $scale, !6 = $tileX, !7 = $tileY
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 60
    4     1        ASSIGN                                                   !1, 160
    5     2        ASSIGN                                                   !2, 3
    7     3        DIV                                              ~11     !1, 360
          4        ADD                                              ~12     ~11, 0.5
          5        ASSIGN                                                   !3, ~12
    8     6        INIT_FCALL                                               'abs'
          7        INIT_FCALL                                               'asinh'
          8        INIT_FCALL                                               'tan'
          9        INIT_FCALL                                               'deg2rad'
         10        SEND_VAR                                                 !0
         11        DO_ICALL                                         $14     
         12        SEND_VAR                                                 $14
         13        DO_ICALL                                         $15     
         14        SEND_VAR                                                 $15
         15        DO_ICALL                                         $16     
         16        DIV                                              ~17     $16, 3.14159
         17        DIV                                              ~18     ~17, 2
         18        SUB                                              ~19     ~18, 0.5
         19        SEND_VAL                                                 ~19
         20        DO_ICALL                                         $20     
         21        ASSIGN                                                   !4, $20
   10    22        SL                                               ~22     1, !2
         23        ASSIGN                                                   !5, ~22
   12    24        MUL                                              ~24     !3, !5
         25        CAST                                          4  ~25     ~24
         26        ASSIGN                                                   !6, ~25
   13    27        MUL                                              ~27     !4, !5
         28        CAST                                          4  ~28     ~27
         29        ASSIGN                                                   !7, ~28
   15    30        INIT_FCALL                                               'var_dump'
         31        SEND_VAR                                                 !6
         32        SEND_VAR                                                 !7
         33        DO_ICALL                                                 
         34      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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