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running PHP scripts in ULib

stefanocasazza 2015-08-04 19:44:33 +02:00
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Home.md

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Welcome to the ULib wiki!
#Running PHP scripts in ULib
***
Download and install the last release of ULib.
I suggest for to have many info to configure ULib with debug (*./configure --enable-debug ...*).
From the downloaded source copy the shell script **php.sh**, that you can found in *ULib-1.4.2/tests/examples*, to some workng directory, say */var/www/example*.
***
The firt time we run **./php.sh** inside */var/www/example* we must have the following directory structure:
**./php.sh**
./userver.cfg
./err: *php?.err*
./log: *php?.log*
./out: *php?.out*
./www: **info.php**
./www/cgi-bin: **index.php**
><?php phpinfo(); ?>
***
####1) You can safely run PHP scripts using ULib’s CGI support.
Run **./php.sh** with argument 1: (we have as output something like that)
~~~~
stefano: /var/www/example # ./php.sh 1
PID = 26222
stefano: /var/www/example # curl http://localhost:8080/cgi-bin/index.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<style type="text/css">
body {background-color: #ffffff; color: #000000;}
...
stefano: /var/www/example # kill 26222
~~~~
The downside of this approach is the latency caused by the spawn of a new PHP interpreter at each request as we can see in *./log/php1.log*:
~~~~
03/08/15 18:47:51 (pid 18714)> request "/cgi-bin/index.php" run in 219 ms
~~~~
####2) To improve performance we can rely on a separate PHP processor to handle PHP requests proxed by FastCGI protocol. Most often, this processing is handled with php-fpm.
[See the official PHP documentation for fpm for all possible configuration options.](http://www.php.net/manual/en/install.fpm.configuration.php)
a) **TCP socket (IP and port) approach**
Edit *php-fpm.conf*
**listen = 127.0.0.1:9000**
~~~~
stefano: /var/www/example # /etc/init.d/php-fpm start
Starting PHP FastCGI Process Manager ...
stefano: /var/www/example # ./php.sh 2a
PID = 26222
stefano: /var/www/example # curl http://localhost:8080/info.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<style type="text/css">
body {background-color: #ffffff; color: #000000;}
...
stefano: /var/www/example # kill 26222; /etc/init.d/php-fpm stop
Stopping PHP FastCGI Process Manager ...
~~~~
Now the latency is much better as we can see in *./log/php2a.log*:
~~~~
03/08/15 20:21:00 (pid 2183)> request "/info.php" run in 8 ms
~~~~
b) **unix domain socket (UDS) approach**
Edit *php-fpm.conf*
**listen = /tmp/fcgi.socket**
~~~~
stefano: /var/www/example # /etc/init.d/php-fpm start
Starting PHP FastCGI Process Manager ...
stefano: /var/www/example # ./php.sh 2b
PID = 26222
stefano: /var/www/example # curl http://localhost:8080/info.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<style type="text/css">
body {background-color: #ffffff; color: #000000;}
...
stefano: /var/www/example # kill 26222; /etc/init.d/php-fpm stop
Stopping PHP FastCGI Process Manager ...
~~~~
The latency is not changed as we can see in *./log/php2b.log*:
~~~~
03/08/15 20:21:00 (pid 2183)> request "/info.php" run in 8 ms
~~~~
####3) To get superior performance you will want to embed the PHP interpreter in the Ulib, ie to configure ULib with php embedded (*./configure --with-php-embedded ...*).
A bunch of distros (such as Fedora, Red Hat and CentOS) include a *php-embedded* package.
Install it, along with *php-devel* and you should be able to build ULib with PHP interpreter embedded
(*Ubuntu 15.04*: **apt-get install libphp5-embed php5-dev**).
Reinstall ULib and run **./php.sh** with argument 3: (we have as output something like that)
~~~~
stefano: /var/www/example # ./php.sh 3
PID = 26222
stefano: /var/www/example # curl http://localhost:8080/info.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<style type="text/css">
body {background-color: #ffffff; color: #000000;}
...
stefano: /var/www/example # kill 26222
~~~~
The latency is now better as we can see in *./log/php3.log*:
~~~~
03/08/15 20:21:00 (pid 2183)> request "/info.php" run in 7 ms
~~~~
***