PHP vld shows file output instead of opcode - php

Question

I'm trying to use vld to view opcode of a php file
prep
I've installed vld with:
pecl install channel://pecl.php.net/vld-0.12.0
To get familiar with VLD, I'm trying to compare to php files (echo1 and echo2)
echo1.php
<?php
echo "Hello"." "."World";
echo2.php
<?php
echo "Hello"," ","World";
phpinfo() shows that vld seems to be enabled:
vld support enabled
Directive Local Value Master Value
vld.active 0 0
vld.col_sep
vld.dump_paths 1 1
vld.execute 1 1
vld.format 0 0
vld.save_dir /tmp /tmp
vld.save_paths 0 0
vld.skip_append 0 0
vld.skip_prepend 0 0
vld.verbosity 1 1
problem
running php files shows output instead of opcode
# php -dvld.active=1 -f echo1.php
Hello World
# php -dvld.active=1 -dvld.execute=0 -f echo1.php
Hello World
# php -dvld.active=1 -f echo2.php
Hello World
# php -dvld.active=1 -dvld.execute=0 -f echo2.php
Hello World
Obviously I'm missing something :)
versions running
php version
# php -v
PHP 5.4.4-14+deb7u14 (cli) (built: Aug 21 2014 08:36:44)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies
Running Debian in Virtualbox with Apache 2.2.22

Answer 1

After updating to PHP 5.6.2 I gave it another go and it is running :)
php version
# php -v
PHP 5.6.2 (cli) (built: Oct 17 2014 07:22:10)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2014 Zend Technologies
with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2014, by Zend Technologies
install pear
yum install php56w-pear
installing vld
pecl install vld
add extension to /etc/php.ini (or in file in /etc/php.d/__.ini)
#/etc/php.d/vld.ini
extension=vld.so
restart httpd service and test again (fingers crossed)
# php -dvld.active=1 -f echo1.php
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename: /var/www/html/echo1.php
function name: (null)
number of ops: 4
compiled vars: none
line #* E I O op fetch ext return operands
-------------------------------------------------------------------------------------
2 0 E > CONCAT ~0 'Hello', '+'
1 CONCAT ~1 ~0, 'World'
2 ECHO ~1
3 3 > RETURN 1
branch: # 0; line: 2- 3; sop: 0; eop: 3; out1: -2
path #1: 0,
Hello World
Boom Baby!
I don't know why, but it is working as expected :)
Now the OPCODE adventures can begin (also a love story)

Answer 2

You might be add extension.so to wrong php.ini file
You might be add the extension to php.ini that use by your webserver instead of cli version
What you can do is run locate php.ini, and choose the cli version of php.ini and add extension.so to that file
Normally cli version of php.ini located at /etc/php5/cli/php.ini
Dont forget to restart your console too