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<?php function ob_callback($str) { return "Modified: " . $str; } ob_start('ob_callback', 2); $out = fopen("php://output", "w"); fwrite($out, "Hello world");
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aXTZO
function name:  (null)
number of ops:  14
compiled vars:  !0 = $out
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                               'ob_start'
          1        SEND_VAL                                                 'ob_callback'
          2        SEND_VAL                                                 2
          3        DO_ICALL                                                 
    9     4        INIT_FCALL                                               'fopen'
          5        SEND_VAL                                                 'php%3A%2F%2Foutput'
          6        SEND_VAL                                                 'w'
          7        DO_ICALL                                         $2      
          8        ASSIGN                                                   !0, $2
   10     9        INIT_FCALL                                               'fwrite'
         10        SEND_VAR                                                 !0
         11        SEND_VAL                                                 'Hello+world'
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Function ob_callback:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aXTZO
function name:  ob_callback
number of ops:  4
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        CONCAT                                           ~1      'Modified%3A+', !0
          2      > RETURN                                                   ~1
    5     3*     > RETURN                                                   null

End of function ob_callback

Generated using Vulcan Logic Dumper, using php 8.0.0


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