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<?php $str = '1,2,3,6,54,8'; $str2 = ''; var_dump(explode(',',$str)); var_dump(explode(',',$str2));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CVnqL
function name:  (null)
number of ops:  17
compiled vars:  !0 = $str, !1 = $str2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '1%2C2%2C3%2C6%2C54%2C8'
    4     1        ASSIGN                                                   !1, ''
    6     2        INIT_FCALL                                               'var_dump'
          3        INIT_FCALL                                               'explode'
          4        SEND_VAL                                                 '%2C'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $4      
          7        SEND_VAR                                                 $4
          8        DO_ICALL                                                 
    7     9        INIT_FCALL                                               'var_dump'
         10        INIT_FCALL                                               'explode'
         11        SEND_VAL                                                 '%2C'
         12        SEND_VAR                                                 !1
         13        DO_ICALL                                         $6      
         14        SEND_VAR                                                 $6
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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