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<?php var_dump(is_numeric('1')); echo (1 ** '1') . "\n"; var_dump(is_numeric('1')); echo (2 ** '1.') . "\n"; var_dump(is_numeric('1.')); echo (3 ** '+1.0') . "\n"; var_dump(is_numeric('+1.0')); echo (4 ** '+1.0e') . "\n"; var_dump(is_numeric('+1.0e')); echo (5 ** '+1.0e0') . "\n"; var_dump(is_numeric('+1.0e0')); echo (6 ** '+1.0e0 ') . "\n"; var_dump(is_numeric('+1.0e0 ')); echo (7 ** '+1.0e0 x') . "\n"; var_dump(is_numeric('+1.0e0 x'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sYolO
function name:  (null)
number of ops:  60
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'is_numeric'
          2        SEND_VAL                                                 '1'
          3        DO_ICALL                                         $0      
          4        SEND_VAR                                                 $0
          5        DO_ICALL                                                 
    5     6        ECHO                                                     '1%0A'
    6     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'is_numeric'
          9        SEND_VAL                                                 '1'
         10        DO_ICALL                                         $2      
         11        SEND_VAR                                                 $2
         12        DO_ICALL                                                 
    7    13        ECHO                                                     '2%0A'
    8    14        INIT_FCALL                                               'var_dump'
         15        INIT_FCALL                                               'is_numeric'
         16        SEND_VAL                                                 '1.'
         17        DO_ICALL                                         $4      
         18        SEND_VAR                                                 $4
         19        DO_ICALL                                                 
    9    20        ECHO                                                     '3%0A'
   10    21        INIT_FCALL                                               'var_dump'
         22        INIT_FCALL                                               'is_numeric'
         23        SEND_VAL                                                 '%2B1.0'
         24        DO_ICALL                                         $6      
         25        SEND_VAR                                                 $6
         26        DO_ICALL                                                 
   11    27        POW                                              ~8      4, '%2B1.0e'
         28        CONCAT                                           ~9      ~8, '%0A'
         29        ECHO                                                     ~9
   12    30        INIT_FCALL                                               'var_dump'
         31        INIT_FCALL                                               'is_numeric'
         32        SEND_VAL                                                 '%2B1.0e'
         33        DO_ICALL                                         $10     
         34        SEND_VAR                                                 $10
         35        DO_ICALL                                                 
   13    36        ECHO                                                     '5%0A'
   14    37        INIT_FCALL                                               'var_dump'
         38        INIT_FCALL                                               'is_numeric'
         39        SEND_VAL                                                 '%2B1.0e0'
         40        DO_ICALL                                         $12     
         41        SEND_VAR                                                 $12
         42        DO_ICALL                                                 
   15    43        ECHO                                                     '6%0A'
   16    44        INIT_FCALL                                               'var_dump'
         45        INIT_FCALL                                               'is_numeric'
         46        SEND_VAL                                                 '%2B1.0e0+'
         47        DO_ICALL                                         $14     
         48        SEND_VAR                                                 $14
         49        DO_ICALL                                                 
   17    50        POW                                              ~16     7, '%2B1.0e0+x'
         51        CONCAT                                           ~17     ~16, '%0A'
         52        ECHO                                                     ~17
   18    53        INIT_FCALL                                               'var_dump'
         54        INIT_FCALL                                               'is_numeric'
         55        SEND_VAL                                                 '%2B1.0e0+x'
         56        DO_ICALL                                         $18     
         57        SEND_VAR                                                 $18
         58        DO_ICALL                                                 
         59      > RETURN                                                   1

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