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<?php echo var_dump(is_numeric('1234')); echo var_dump(is_numeric('a1234'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oaT2T
function name:  (null)
number of ops:  15
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'is_numeric'
          2        SEND_VAL                                                 '1234'
          3        DO_ICALL                                         $0      
          4        SEND_VAR                                                 $0
          5        DO_ICALL                                         $1      
          6        ECHO                                                     $1
    3     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'is_numeric'
          9        SEND_VAL                                                 'a1234'
         10        DO_ICALL                                         $2      
         11        SEND_VAR                                                 $2
         12        DO_ICALL                                         $3      
         13        ECHO                                                     $3
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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