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<?php $grades=array(-4,-1,0,1,6,10,70,99,100,101,105,110); foreach($grades as $grade){ if( ($grade+1)*(101-$grade) > 0 ){ // ($grade minus negative [lower limit])*([upper limit] plus $grad) $validGrades[] = $grade; }else{ $invalidGrades[] = $grade; } } var_export($validGrades); var_export($invalidGrades);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 14
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 14
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 8, Position 2 = 11
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
filename:       /in/kUkpK
function name:  (null)
number of ops:  22
compiled vars:  !0 = $grades, !1 = $grade, !2 = $validGrades, !3 = $invalidGrades
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1      > FE_RESET_R                                       $5      !0, ->14
          2    > > FE_FETCH_R                                               $5, !1, ->14
    4     3    >   ADD                                              ~6      !1, 1
          4        SUB                                              ~7      101, !1
          5        MUL                                              ~8      ~6, ~7
          6        IS_SMALLER                                               0, ~8
          7      > JMPZ                                                     ~9, ->11
    5     8    >   ASSIGN_DIM                                               !2
          9        OP_DATA                                                  !1
         10      > JMP                                                      ->13
    7    11    >   ASSIGN_DIM                                               !3
         12        OP_DATA                                                  !1
    3    13    > > JMP                                                      ->2
         14    >   FE_FREE                                                  $5
   10    15        INIT_FCALL                                               'var_export'
         16        SEND_VAR                                                 !2
         17        DO_ICALL                                                 
   11    18        INIT_FCALL                                               'var_export'
         19        SEND_VAR                                                 !3
         20        DO_ICALL                                                 
         21      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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