Use PHP to expand vld to view PHPopcode

Use PHP extension vld to view PHPopcode author: zhanhailiang date: first download the latest version of vld extension :~ Public_htmlphp-5.3.13ext & gt; wgetpecl. php. netgetvld-0.11.2.tgz ~ Public_htmlphp-5.3.13ext & gt; tar use PHP extension vld to view PHP opcode

Author: zhanhailiang date:

First download the latest vld extension:

~/public_html/php-5.3.13/ext> wget http://pecl.php.net/get/vld-0.11.2.tgz~/public_html/php-5.3.13/ext> tar zxvf vld-0.11.2.tgz ~/public_html/php-5.3.13/ext> cd vld-0.11.2/

Next, compile and install the vld extension:

~/public_html/php-5.3.13/ext/vld-0.11.2> phpize ~/public_html/php-5.3.13/ext/vld-0.11.2> ./configure --with-php-config=/usr/local/services/php/bin/php-config --enable-vld~/public_html/php-5.3.13/ext/vld-0.11.2> make~/public_html/php-5.3.13/ext/vld-0.11.2> sudo make installInstalling shared extensions:     /usr/local/services/php/lib/php/extensions/no-debug-non-zts-20090626/

Finally, copy the generated vld. so to the extension_dir Directory:

~/public_html/php-5.3.13/ext/vld-0.11.2> cd /usr/local/services/php/lib/php/extensions/no-debug-non-zts-20090626//usr/local/services/php/lib/php/extensions/no-debug-non-zts-20090626> sudo cp vld.so /usr/local/services/php/extensions/

Modify the php. ini file and add the following configuration:

extension=vld.so

Next, create the test. php file:

 
Run cli to view the generated opcode:
~/public_html> php -dvld.active=1 test.php Finding entry pointsBranch analysis from position: 0Return foundfilename:       /home/zhanhailiang/public_html/test.phpfunction name:  (null)number of ops:  4compiled vars:  !0 = $aline     # *  op                           fetch          ext  return  operands---------------------------------------------   3     0  >   ASSIGN                                                   !0, 'hello+world'   5     1      CONCAT                                           ~1      !0, '%0A'         2      ECHO                                                     ~1   6     3    > RETURN                                                   1 branch: #  0; line:     3-    6; sop:     0; eop:     3path #1: 0, hello world