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<?php $date='iiii'; if(!isNumeric($date)){ echo 1; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 7
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
filename:       /in/jrkf9
function name:  (null)
number of ops:  8
compiled vars:  !0 = $date
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'iiii'
    3     1        INIT_FCALL_BY_NAME                                       'isNumeric'
          2        SEND_VAR_EX                                              !0
          3        DO_FCALL                                      0  $2      
          4        BOOL_NOT                                         ~3      $2
          5      > JMPZ                                                     ~3, ->7
    4     6    >   ECHO                                                     1
    5     7    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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