Unix Surgeon » php

What is the PHP/Java Bridge?

admin — Mon, 12 Sep 2011 12:28:29 +0000

The php-java bridge is the php extension for using the java code in php files . You can access Java classes etc from within your PHP code.

Basically the PHP/Java Bridge is an implementation of a streaming, XML-based network protocol which can be used to connect a native script engine, for example PHP, Scheme or Python, with a Java virtual machine. It is up to 50 times faster than local RPC via SOAP, requires less resources on the web-server side. It is faster and more reliable than direct communication via the Java Native Interface, and it requires no additional components to invoke Java procedures from PHP or PHP procedures from Java.

How it works :-

A PHP Front end contained in, and associated with, a Java back end. The invoked Front end uses simple HTTP or XML to invoke Java procedures/methods/classes of the running back end. Both, the front end and the back end establish a continuation which may be called at any time from the other continuation.

This mechanism can also be used programmatically: the JAVA interface can be used to invoke PHP methods within a running PHP/Apache server so that Java components can invoke PHP instances and PHP scripts can call Java based applications or transfer control back to the environment where the request came from.

Use for :-

It’s mandatory requirement for all type of payment gateway integration. (Like :- HDFC,ICICI etc.)

For more information :- http://php-java-bridge.sourceforge.net/pjb

How to upgrade php 5.1 to 5.2

admin — Tue, 29 Mar 2011 14:31:00 +0000

CentOS – Upgrade PHP 5.1 To 5.2

Today I was encountered with one problem,I have successfully install LAMP server on my CentOS 5 box,but when I installed drupal 7.0 on it,it throws an error like the minimum requirement to install the drupal 7.0 is php should be at least 5.2.4 .
These instructions were created using CentOS 5.3 32-bit server :-
First check which version of php you have installed:-

# rpm -qa |grep php

php-mcrypt-5.1.6-15.el5.i386
php-common-5.1.6-15.el5.i386
php-cli-5.1.6-15.el5.i386
php-5.1.6-15.el5.i386
php-pdo-5.1.6-15.el5.i386
php-bcmath-5.1.6-15.el5.i386
php-ldap-5.1.6-15.el5.i386
php-devel-5.1.6-15.el5.i386
php-gd-5.1.6-15.el5.i386
php-xml-5.1.6-15.el5.i386
php-mbstring-5.1.6-15.el5.i386
php-mysql-5.1.6-15.el5.i386
php-dba-5.1.6-15.el5.i386

Add the new repositories:-

First thing we need to do is add the new repositories to yum. When we add the this repository to configure it so it only pulls PHP packages. To start we’ll need create a new yum repository configuration file :
# vi /etc/yum.repos.d/CentOS-Testing.repo
Copy/paste the following into this file:

——————————————————————–

[c5-testing]
name=CentOS-5 Testing
baseurl=http://dev.centos.org/centos/$releasever/testing/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://dev.centos.org/centos/RPM-GPG-KEY-CentOS-testing
includepkgs=php*
———————————————————-

Make sure that there is no spaces at the start of each line, then save and close the file.
Update PHP packages :-
Now you can use yum to update the PHP packages on your system:
# yum update
You should be shown a list of new packages that are going to be updated. Compare it to the list of your previously installed PHP packages . Note any packages that are not in the list. You’ll need to remove these packages or find updates for them because they won’t work after you update to PHP 5.2.x. If that is acceptable type “y” to continue and let yum update the packages.
Once yum has completed restart Apache:
# service httpd restart
To verify the update is working create a simple phpinfo.php in your documentroot or www directory with the following source code:

and open it in a web browser. The new PHP version should be reflected at the top of the page.
Result:-
You should now have PHP 5.2.10 running on CentOS 5.3 32-bit.
# rpm -qa |grep php

php-mcrypt-5.2.9-2.el5.centos.3
php-gd-5.2.10-1.el5.centos
php-devel-5.2.10-1.el5.centos
php-mysql-5.2.10-1.el5.centos
php-pdo-5.2.10-1.el5.centos
php-5.2.10-1.el5.centos
php-xml-5.2.10-1.el5.centos
php-ldap-5.2.10-1.el5.centos
php-common-5.2.10-1.el5.centos
php-cli-5.2.10-1.el5.centos
php-mbstring-5.2.10-1.el5.centos

# php -v

PHP 5.2.10 (cli) (built: Nov 13 2009 11:24:03)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies

Enjoy Linux…!!!

Diffrence between EAccelerator & APC (Alternative PHP Cache)

admin — Wed, 09 Mar 2011 12:17:22 +0000

Diffrence between EAccelerator & APC :-

EAccelerator is faster than APC. EAccelerator is “just” an opcode cache. It transparently caches PHP opcodes; all you have to do to use it is download, compile and enable and never worry about it again. APC, on the other hand, does a bit more. While APC also caches opcodes, it performs worse than EAC or xcache does (there’s a bit of debate as to which is better, for my particular needs, EAC was marginally faster, but both outperformed APC) for opcode caching. APC, on the other hand, also has some useful features that aren’t related to opcode caching, but rather apc_store, apc_fetch and apc_define_constants .Using PHP cache system will greatly increase your whole system performance, as you can with Pure PHP ned 209.58ms and using PHP cache system only need around 60ms. So it will boost your server response up to 4 times faster. And between XCache, APC and eAccelerator there are no significant different only 1ms-2ms different between them. So which one you choose is up to you, but if you use Zend Optimizer don’t use APC as they are not working together.

To install/Enable the APC please use this post.

make: *** [apc.lo] Error 1 (APC Installation)

admin — Wed, 09 Mar 2011 12:09:37 +0000

Today when i try to install APC instead of EAccelerator via pecl install APC-3.1.5 or even WHM /Cpanel >> module installers >> php pecl >> manage

I get following error when the package comes to the make command:-

—————————————————————————–

running: make

/var/tmp/APC/apc.c:463: error: ‘apc_regex’ has no member named ‘preg’

/var/tmp/APC/apc.c:464: error: ‘apc_regex’ has no member named ‘nreg’

make: *** [apc.lo] Error 1

ERROR: `make’ failed

————————————————————————————————–

To resolve this and reinstall the APC(make sure that EAccelerator removed from php),before reinstall the APC install the following packages :-

# yum install pcre-devel

before installing APC.

On Debian use

# aptitude install libpcre3-dev

Then you will get the following response when you reinstall the APC :-

—————————————————————————-

unixsurg [~]# cd /usr/lib/php/extensions/no-debug-non-zts-20090626/

unixsurg [/usr/lib/php/extensions/no-debug-non-zts-20090626]# ls

./ ../ apc.so

unixsurg [/usr/lib/php/extensions/no-debug-non-zts-20090626]# cat /usr/lib/php.ini |grep apc

extension=”apc.so”

unixsurg [/usr/lib/php/extensions/no-debug-non-zts-20090626]#

—————————————————————————–

make: *** [ffmpeg_frame.lo] Error 1

admin — Sat, 26 Feb 2011 20:27:58 +0000

Friends Today i have installed the ffmpeg through yum on my LAMP server,i got that error when i compile/install ffmpeg with php :-

Install FFMPEG-PHP Extension :-

FFmpeg-php is a very good extension and wrapper for PHP which can pull useful information about video through API interface. Inorder to install it you will need to download the source file and then compile and install extension in your server.

# cd /usr/local/src

wget http://downloads.sourceforge.net/project/ffmpeg-php/ffmpeg-php/0.6.0/ffmpeg-php-0.6.0.tbz2?use_mirror=nchc

tar -xjf ffmpeg-php-0.6.0.tbz2

phpize

# ./configure
# make

I got the following error when run the command make to compile Ffmpeg-php:
make: *** [ffmpeg_frame.lo] Error 1
There are two ways to fix this problem:-

*** First solution (highly recommended)
In the latest version of ffmpeg-php (0.6.0), you need to modify the file: ffmpeg_frame.c and replace every instance of PIX_FMT_RGBA32 with PIX_FMT_RGB32
Using Linux text editor, vi run the following commands:
# vi ffmpeg_frame.c

then use the below syntax to search & replace the string

:%s/PIX_FMT_RGBA32/PIX_FMT_RGB32

Then save

:wq!
Here, you should be back to the command line. Run these commands to compile and install FFmpeg-Php:
# ./configure
# make
# make install
Then it will install all the shared libraries related to ffmpeg in to php extensions directory:-
Installing shared extensions: /usr/local/lib/php/extensions/no-debug-non-zts-20090626/
You can check the ffmpeg.so file through :-
# cd /usr/local/lib/php/extensions/no-debug-non-zts-20090626
./ ../ eaccelerator.so* ffmpeg.so*

________________________________________
________________________________________
*** Second solution
Run the following commands:
# cd /path/to/ffmpeg-php-0.6.0
# cp -aP ffmpeg_frame.loT ffmpeg_frame.lo
# make clean
#./configure
Then recompile and install ffmpeg.
Here, you should be back to the command line. Run these commands to compile and install FFmpeg-Php:
# ./configure
# make
# make install

How to install ffmpeg on CentOS/RHEL through YUM

admin — Sat, 26 Feb 2011 18:34:06 +0000

How to install ffmpeg on CentOS/RHELvia YUM :-

FFmpeg is very important if you are planning to run a website with streaming with conversion of video files to different video formats. This post provide you a walk through for Centos/Redhat versions of Linux where user can install ffmpeg without compiling the source which is a more traditional way of installing the FFmpeg software on linux servers. In this tutorial i will show you the easy way to install ffmpeg and ffmpeg-php (php extension) with just yum rather than compiling ffmpeg from source files.

First we will have to install the DAG RPM repositories which contains huge amount of rpm packages. It’s very easy. Just install the latest rpmforge-release package for your distribution and architecture.

This will automatically install the configuration and GPG keys that are for safely installing RPMforge packages.

First :-

# nano -w /etc/yum.repos.d/dag.repo

Insert :-

[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux
baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
gpgcheck=1
enabled=1

Then save the repo file also you can update RPM through rpmforge :-

Please select the correct command from the following list:

* Supported Red Hat Enterprise Linux 5 / i386:

# rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

* Red Hat Enterprise Linux 5 / x86_64:

# rpm -Uhv http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/RPMS//rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm

* Red Hat Enterprise Linux 4 / i386:

# rpm -Uhv http://apt.sw.be/redhat/el4/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el4.rf.i386.rpm

* Red Hat Enterprise Linux 4 / x86_64:

# rpm -Uhv http://apt.sw.be/redhat/el4/en/x86_64/rpmforge/RPMS/rpmforge-release-0.3.6-1.el4.rf.x86_64.rpm

* Red Hat Enterprise Linux 3 / i386:

# rpm -Uhv http://apt.sw.be/redhat/el3/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el3.rf.i386.rpm

* Red Hat Enterprise Linux 3 / x86_64:

# rpm -Uhv http://apt.sw.be/redhat/el3/en/x86_64/rpmforge/RPMS/rpmforge-release-0.3.6-1.el3.rf.x86_64.rpm

Then yum update and search for ffmpeg and install all ffmpeg packages including devel.

# yum update

Installing FFMPEG.:-

# yum install ffmpeg ffmpeg-devel

If Seems there is some lib problems along the way so in /etc/ld.so.conf add

/usr/local/lib

also check /etc/ld.so.conf.d and make sure there are no .conf files that may be loading other files.

then

# ldconfig -v

Install FFMPEG-PHP Extension

# cd /usr/local/src

wget http://downloads.sourceforge.net/project/ffmpeg-php/ffmpeg-php/0.6.0/ffmpeg-php-0.6.0.tbz2?use_mirror=nchc

tar -xjf ffmpeg-php-0.6.0.tbz2

phpize

./configure
make
make install

Once you have done that without any problems then you will see the php extension file /usr/local/lib/php/extensions/no-debug-non-zts-20060613/ffmpeg.so and you will need mention that extension in php.ini file.

# nano /usr/local/lib/php.ini

# Vi /usr/local/lib/php.ini

Put the below two lines at the end of the php.ini file

[ffmpeg]
extension=ffmpeg.so

Then restart apache using — service httpd restart

Installing Mplayer + Mencoder

Just issue the following yum commands to install the rest of the packages.

# yum install mplayer mencoder

Installing FlvTool2

Flvtool2 is a flash video file manipulation tool. It can calculate metadata and can cut and edit cue points for flv files.

If you are on Centos 5 try yum install flvtool2 with dag repository and if you get package not found you will need to manually download and compile the flvtool2. You can download latest version of flvtool2 from:- http://rubyforge.org/projects/flvtool2/

# wget

# ruby setup.rb config
# ruby setup.rb setup
# sudo ruby setup.rb install

If you get command not found error, it probably means that you dont have ruby installed. Being a cpanel server you can do that using /scripts/installruby OR yum install ruby

At last :- Please restart the apache web server with the following command :-

# /etc/init.d/httpd restart

To check the FFmpeg working:

Finally, check the ffmpeg whether it is working or not.

# ffmpeg
# ffmpeg -formats

# ffmpeg –help ( This lists path of mpeg, its modules and other path information)
# ffmpeg -i Input.file Output.file

To check what audi/video formats are supported :-

ffmpeg -formats > ffmpeg-format.txt

Open the ffmpeg-formats.txt to see the ooutput

D means decode
E means encode
V means video
A means audio
T = Truncated

To check whether FFMPEG integrated/enabled with PHP or not through phpinfo page :-

Enjoy Linux !!!!

How to enable the APC extension in php (Alternative PHP Cache).

admin — Mon, 10 Jan 2011 17:32:37 +0000

Alternative PHP Cache (APC) is a free, open source framework that optimizes PHP intermediate code and caches data and compiled code from the PHP bytecode compiler in shared memory. What this means is that APC reads your PHP files, parses them into a more efficient binary format and then caches them in memory so that each request for your PHP files and PHP library files can be fetch from the parsed cache. This will generally lead to a speed increase when serving a PHP site, especially one with a lot of library files. APC, allows your web server to save the compiled PHP so it can skip that compiling step. This can give your server a huge performance boost.

Please take the backup of php directory first because if anything goes wrong you can revert your configuration and then use the following steps to install the apc extension :-

First of all we need to download the APC code from the PHP PECL library. So change directory to somewhere like /home or /usr/local/ and then get the latest version like so:

# wget http://pecl.php.net/get/APC

This will always get the latest version, downloaded APC-3.0.16.tgz like so:

Then you need to extract the files:

# tar -zxvf APC-3.0.16.tgz

and change into the APC directory:

# cd APC-3.0.16

The next step is to run the “phpize” command. This requires that you have PHP development package installed(Php-devel,. Installed by running “yum install php-devel”).

# phpize

Then configure APC, telling it where the executable file php-config is. If you don’t know where this is, then do this:

# whereis php-config

which will return something like:

phpize: /usr/bin/phpize

and then run the configure command like :-

# ./configure –enable-apc –enable-apc-mmap –with-apxs=/usr/sbin/apxs(your apache apxs path) –with-php-config=/usr/bin/php-config(your php-config path)

Now that configure is done, it’s just a matter of running make :

# make

…
Libraries have been installed in:

/usr/local/APC-3.0.16/modules

and then make install:

# make install

check your php.ini location by

# php -i | grep php.ini

then open it with :-

#vi /www/apache-lms/php.ini

and go to the last line and paste the following :-

extension=”apc.so”

and restarting the Apache web server:

# /etc/init.d/httpd restart

The APC cache will now be enabled. You can verify this by creating a script or custom page which calls the phpinfo() command and looking for the APC section. It will have been switched on by default by adding a “extension=apc.so” line to your /etc/php.ini file.

symbol lookup error: suhosin.so: undefined symbol: zend_atol

admin — Mon, 20 Sep 2010 11:30:38 +0000

HI,

Today after updating my php and apache on the server. I was getting 500 internal error my website and i got below error on my server apache error logs.

“/usr/bin/php: symbol lookup error: /usr/local/lib/php/extensions/no-debug-non-zts-20060613/suhosin.so: undefined symbol: zend_atol”

The error message appears when an old application or software is upgraded to latest version. It may not cause issues with all the applications but definitely does affect some of them.

The only works when you enable suhosin.simulation for the account instead of disabling suhosin on the server.

You can perform this task by following ways :-

1. By enabling suhosin.simulation in .htaccess file. If susphp is not enabled on the server.

php_flag suhosin.simulation On

2. By creating php.ini file under public_html/ directory. If susphp is enabled on the server.

suhosin.simulation On

If you are getting same error under wp-admin login page then copy your php.ini file under wp-admin/ directory and check once again.

Now you can check your application, Also there is no need to restart any service like apache….It will work…!!!

How to install JpGraph on linux server.

admin — Sat, 20 Dec 2008 12:48:04 +0000

I use JpGraph for some websites I run. It’s a PHP package that produces good-looking graphs.

Installing JpGraph

We’re going to need to be able to extract some stuff from some CAB files for starters.
Re-enable the yum Dag repository by setting enabled=1 in /etc/yum.repos.d/Dag.repo or /etc/yum.repos.d/rhel-debuginfo.repo
Once that’s done, continue on. First we need to install cabextract, then get some Microsoft TT fonts or TTF fonts. See http://corefonts.sourceforge.net/
for updated instructions on that, otherwise:

[root@p-root /]# yum install cabextract
[root@p-root /]# mkdir /usr/src/msttcorefonts
[root@p-root /]# cd /usr/src/msttcorefonts
[root@p-root /]# wget http://corefonts.sourceforge.net/msttcorefonts-2.0-1.spec
[root@p-root /]# rpmbuild -bb msttcorefonts-2.0-1.spec

The fonts should be downloaded from SourceForge and compiled into an RPM. The new RPM will reside under the standard RPM build architecture. Install it:

[root@proot /]# rpm -ivh /usr/src/redhat/RPMS/noarch/msttcorefonts-2.0-1.noarch.rpm

Now for Jpgraph. Go to http://www.aditus.nu/jpgraph/jpdownload.php/
and get the download link for the latest version.

[root@proot /]# cd /srv/www
[root@proot /]# wget http://www.aditus.nu/jpgraph/jpdownload.php/
[root@proot /]# tar zxvf jpgraph-[version].tar.gz
[root@proot /]# ln -s jpgraph-[version]/ jpgraph
[root@proot /]# rm jpgraph-[version].tar.gz

The JpGraph code sits above any website document roots I might have set up. I can include Jpgraph into my web code and use it there, but the code itself is not directly accessible from the web.

Disable the Dag repository again by setting enabled=0 in /etc/yum.repos.d/Dag.repo

Configure JpGraph:)

Edit /srv/www/jpgraph/src/jpg-config.inc.php and set the following line:
DEFINE(”TTF_DIR”,”/usr/share/fonts/msttcorefonts/”);

Note: If fonts aren’t appearing in your graphs, make sure that you compiled PHP with the “-dir” options pointing to the right lib*.so files (/usr/lib)…:)

Enjoy linux…………………:)