How to get PHP opcodes?

Question

<?php $show_value = 123; echo 'sing_quote'.$show_value; echo "double_quote{$show_value}"; ?> 

Its operation code is:

 1: <?php 2: $show_value = 123; 0 ASSIGN !0, 123 3: echo 'sing_quote'.$show_value; 1 CONCAT 'sing_quote', !0 =>RES[~1] 2 ECHO ~1 4: echo "double_quote{$show_value}"; 3 ADD_STRING 'double_quote' =>RES[~2] 4 ADD_VAR ~2, !0 =>RES[~2] 5 ECHO ~2 6 RETURN 1 

Answer 1

See the Vulcan Logic Disassembler PECL Extension - see the author’s home page for more information.

The keys to dismantle the Vulcan Logic Disassembler into the Zend engine and resets all opcodes (actuators) of the script. It was written as the beginning of the encoder, but I did not have time for that. It can be used to see what happens in the Zend Engine.

After installation, you can use it as follows:

 php -d vld.active=1 -d vld.execute=0 -f yourscript.php 

See also an interesting blog post about extracting the opcode and PHP on the manual page for available opcodes .

Answer 2

Parsekit has parsekit_compile_string () .

 sudo pecl install parsekit 

 var_dump (parsekit_compile_string (<<< PHP
  \ $ show_value = 123;
  echo 'sing_quote'. \ $ show_value;
  echo "double_quote {\ $ show_value}";
 Php
 ));

The output is pretty detailed, so you need to process it to get an assembler format.

   ["opcodes"] =>
   array (10) {
     [0] =>
     array (9) {
       ["address"] =>
       int (44682716)
       ["opcode"] =>
       int (101)
       ["opcode_name"] =>
       string (13) "ZEND_EXT_STMT"
       ["flags"] =>
       int (4294967295)
       ["result"] =>
       array (8) {
         ["type"] =>
         int (8)
         ["type_name"] =>
         string (9) "IS_UNUSED"
         ["var"] =>
         int (0)
         ["opline_num"] =>
         string (1) "0"
         ["op_array"] =>
         string (1) "0"
         ["jmp_addr"] =>
         string (1) "0"
         ["jmp_offset"] =>
         string (8) "35419039"
         ["EA.type"] =>
         int (0)
       }
       ["op1"] =>
       array (8) {
         ["type"] =>
         int (8)
         ["type_name"] =>
         string (9) "IS_UNUSED"
         ["var"] =>
         int (0)
         ["opline_num"] =>
         string (1) "0"
         ["op_array"] =>
         string (1) "0"
         ["jmp_addr"] =>
         string (1) "0"
         ["jmp_offset"] =>
         string (8) "35419039"
         ["EA.type"] =>
         int (0)
       }