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<?php var_dump(mb_substr('HelloIamastring', 6, NULL, 'UTF-8')); var_dump(mb_substr('HelloIamastring', 6, NULL)); var_dump(mb_substr('HelloIamastring', 6));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iOOEE
function name:  (null)
number of ops:  25
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'mb_substr'
          2        SEND_VAL                                                 'HelloIamastring'
          3        SEND_VAL                                                 6
          4        SEND_VAL                                                 null
          5        SEND_VAL                                                 'UTF-8'
          6        DO_ICALL                                         $0      
          7        SEND_VAR                                                 $0
          8        DO_ICALL                                                 
    5     9        INIT_FCALL                                               'var_dump'
         10        INIT_FCALL                                               'mb_substr'
         11        SEND_VAL                                                 'HelloIamastring'
         12        SEND_VAL                                                 6
         13        SEND_VAL                                                 null
         14        DO_ICALL                                         $2      
         15        SEND_VAR                                                 $2
         16        DO_ICALL                                                 
    6    17        INIT_FCALL                                               'var_dump'
         18        INIT_FCALL                                               'mb_substr'
         19        SEND_VAL                                                 'HelloIamastring'
         20        SEND_VAL                                                 6
         21        DO_ICALL                                         $4      
         22        SEND_VAR                                                 $4
         23        DO_ICALL                                                 
         24      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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