Creating a post-commit hook in PHP

In my earlier pots, I elaborated how to create a pre-commit svn hook in PHP, for avoiding commits without adding comments.

Here I am going to elaborate step by step, to make a post-commit svn hook, for sending emails to all the members who are concerned with the application, when its committed.

Objective :

To create a post-commit hook in PHP, such that when any commit is done, a mail is sent to all members whose email id is configured in the system.

Step-by-step Execution :
1. Create a svn application directory.

Ex: Create a svn repository for the application router,

Command: svnadmin create /usr/local/svn/router (The path can be changed)

2) In the directory, /usr/local/svn/router/hooks/ rename the file post-commit.tmpl to post-commit.

Add the following lines of codes to it, with assumption that php interpreter is present at /usr/bin/php

#!/usr/bin/php
$REPOS=$argv[1];
$REV=$argv[2];

$application=end(explode("/",$REPOS));
$author=`/usr/bin/svnlook author -r $REV $REPOS`;
$comment_added=`/usr/bin/svnlook log -r $REV $REPOS`;

$domain='@anydomain.com';
$from=trim($author).trim($domain);
$subject="SVN Commit Notification for $application";
$message="Committed by :"."\n".$author;
$message.="\n\n"."Commit comments :"."\n". $comment_added;

$file_path = $REPOS.'/hooks/email.txt';
$email_array=explode(",",file_get_contents($file_path));

$headers = 'From: '.$from."\r\n".'Date: '.date('r')."\r\n".'MIME-Version: 1.0'."\r\n".'Content-transfer-encoding: 8bit'."\r\n".'Content-type: text/plain; charset=iso-8859-1'."\r\n";

foreach($email_array as $ea)
{
$return_mail = mail($ea,$subject,$message,$headers);
}
?>

You need to add a file email.txt in the /usr/local/svn/hooks/ directory which contains a comma separated list of email ids, without any spaces and new lines.
Ex: first@anydomain.com,second@anydomain.com,third@anydomain.com

Checkout the repository, in your local directory, make some modification and try now to commit, without providing any comment.

After committing the code an email will be send to all email ids, in the email.txt file.

A few details :
In the post-commit hook, svn passes 2 parameters to it, namely repository name and revision number. We can make use of these parameters, to send information as required, in the mail.