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<?php $p = 0; $i = 0.06; $c = 12; $n = 1; $r = 200; $x = $i / $c; $y = pow((1 + $x), ($n * $c)); $vf = $p * $y + (($r * $y - 1) / $x); // your original equation echo $vf; echo "\n\n"; $vf = $p * $y + ($r * ($y - 1) / $x); // correct equation echo $vf;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/fr8ib
function name:  (null)
number of ops:  30
compiled vars:  !0 = $p, !1 = $i, !2 = $c, !3 = $n, !4 = $r, !5 = $x, !6 = $y, !7 = $vf
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 0
    4     1        ASSIGN                                                   !1, 0.06
    5     2        ASSIGN                                                   !2, 12
    6     3        ASSIGN                                                   !3, 1
    7     4        ASSIGN                                                   !4, 200
    9     5        DIV                                              ~13     !1, !2
          6        ASSIGN                                                   !5, ~13
   10     7        INIT_FCALL                                               'pow'
          8        ADD                                              ~15     1, !5
          9        SEND_VAL                                                 ~15
         10        MUL                                              ~16     !3, !2
         11        SEND_VAL                                                 ~16
         12        DO_ICALL                                         $17     
         13        ASSIGN                                                   !6, $17
   12    14        MUL                                              ~19     !0, !6
         15        MUL                                              ~20     !4, !6
         16        SUB                                              ~21     ~20, 1
         17        DIV                                              ~22     ~21, !5
         18        ADD                                              ~23     ~19, ~22
         19        ASSIGN                                                   !7, ~23
   13    20        ECHO                                                     !7
   14    21        ECHO                                                     '%0A%0A'
   15    22        MUL                                              ~25     !0, !6
         23        SUB                                              ~26     !6, 1
         24        MUL                                              ~27     !4, ~26
         25        DIV                                              ~28     ~27, !5
         26        ADD                                              ~29     ~25, ~28
         27        ASSIGN                                                   !7, ~29
   16    28        ECHO                                                     !7
         29      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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