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<?php foreach ([NULL, '', 0, '0'] as $val) { echo var_export(is_numeric($val), TRUE) . PHP_EOL; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 1, Position 2 = 10
Branch analysis from position: 1
2 jumps found. (Code = 78) Position 1 = 2, Position 2 = 10
Branch analysis from position: 2
1 jumps found. (Code = 42) Position 1 = 1
Branch analysis from position: 1
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
filename:       /in/523Qg
function name:  (null)
number of ops:  12
compiled vars:  !0 = $val
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E > > FE_RESET_R                                           $1      <array>, ->10
          1    > > FE_FETCH_R                                                   $1, !0, ->10
    4     2    >   INIT_FCALL                                                   'var_export'
          3        FRAMELESS_ICALL_1                is_numeric          ~2      !0
          4        SEND_VAL                                                     ~2
          5        SEND_VAL                                                     <true>
          6        DO_ICALL                                             $3      
          7        CONCAT                                               ~4      $3, '%0A'
          8        ECHO                                                         ~4
    3     9      > JMP                                                          ->1
         10    >   FE_FREE                                                      $1
    5    11      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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