Walking in Light with Christ - Faith, Computing, Diary

How to count lines of PHP source code in a directory (recursively)

Posted: 14 Jul 2012 05:27 AM PDT

Count PHP and other programming languages lines of source code (source code files count) recursively

Being able to count the number of PHP source code lines for a website is a major statistical information for timely auditting of projects and evaluating real Project Managment costs. It is inevitable process for any software project evaluation to count the number of source lines programmers has written.
In many small and middle sized software and website development companies, it is the system administrator task to provide information or script quickly something to give info on the exact total number of source lines for projects.

Even for personal use out of curiousity it is useful to know how many lines of PHP source code a wordpress or Joomla website (with the plugins) contains.
Anyone willing to count the number of PHP source code lines under one directory level, could do it with:::

serbver:~# cd /var/www/wordpress-website server:/var/www/wordpress-website:# wc -l *.php 17 index.php 101 wp-activate.php 1612 wp-app.php 12 wp-atom.php 19 wp-blog-header.php 105 wp-comments-post.php 12 wp-commentsrss2.php 90 wp-config-sample.php 85 wp-config.php 104 wp-cron.php 12 wp-feed.php 58 wp-links-opml.php 59 wp-load.php 694 wp-login.php 236 wp-mail.php 17 wp-pass.php 12 wp-rdf.php 15 wp-register.php 12 wp-rss.php 12 wp-rss2.php 326 wp-settings.php 451 wp-signup.php 110 wp-trackback.php 109 xmlrpc.php 4280 total

This will count and show statistics, for each and every PHP source file within wordpress-website (non-recursively), to get only information about the total number of PHP source code lines within the directory, one could grep it, e.g.:::

server:/var/www/wordpress-website:# wc -l *.php |grep -i '\stotal$' 4280 total

The command grep -i '\stotal$' has \s in beginning and $ at the end of total keyword in order to omit erroneously matching PHP source code file names which contain total in file name; for example total.php …. total_blabla.php …. blabla_total_bla.php etc. etc.

The \s grep regular expression meaning is "put empty space", "$" is placed at the end of tital to indicate to regexp grep only for words ending in string total.

So far, so good … Now it is most common that instead of counting the PHP source code lines for a first directory level to count complete number of PHP, C, Python whatever source code lines recursively – i. e. (a source code of website or projects kept in multiple sub-directories). To count recursively lines of programming code for any existing filesystem directory use find in conjunction with xargs:::

server:/var/www/wp-website1# find . -name '*.php' | xargs wc -l 1079 ./wp-admin/includes/file.php 2105 ./wp-admin/includes/media.php 103 ./wp-admin/includes/list-table.php 1054 ./wp-admin/includes/class-wp-posts-list-table.php 105 ./wp-admin/index.php 109 ./wp-admin/network/user-new.php 100 ./wp-admin/link-manager.php 410 ./wp-admin/widgets.php 108 ./wp-content/plugins/akismet/widget.php 104 ./wp-content/plugins/google-analytics-for-wordpress/wp-gdata/wp-gdata.php 104 ./wp-content/plugins/cyr2lat-slugs/cyr2lat-slugs.php ,,,, 652239 total

As you see the cmd counts and displays the number of source code lines encountered in each and every file, for big directory structures the screen gets floated and passing | less is nice, e.g.:

find . -name '*.php' | xargs wc -l | less

Displaying lines of code for each file within the directories is sometimes unnecessery, whether just a total number of programming source code line is required, hence for scripting purposes it is useful to only get the source lines total num:::

server:/var/www/wp-website1# find . -name '*.php' | xargs wc -l | grep -i '\stotal$'

Another shorter and less CPU intensive one-liner to calculate the lines of codes is:::

server:/var/www/wp-website1# ( find ./ -name '*.php' -print0 | xargs -0 cat ) | wc -l

Here is one other shell script which displays all file names within a directory with the respective calculated lines of code

For more professional and bigger projects using pure Linux bash and command line scripting might not be the best approach. For counting huge number of programming source code and displaying various statistics concerning it, there are two other tools – SLOCCount
as well as clock (count lines of code)

Both tools, are written in Perl, so for IT managers concerned for speed of calculating projects source (if too frequent source audit is necessery) this tools might be a bit sluggish. However for most projects they should be of a great add on value, actually SLOCCount was already used for calculating the development costs of GNU / Linux and other projects of high importance for Free Software community and therefore it is proven it works well with ENORMOUS software source line code calculations written in programming languages of heterogenous origin.

sloccount and cloc packages are available in default Debian and Ubuntu Linux repositories, so if you're a Debilian user like me you're in luck:::

server:~# apt-cache search cloc$ cloc - statistics utility to count lines of code server:~# apt-cache search sloccount$ sloccount - programs for counting physical source lines of code (SLOC)

Well that's all folks, Cheers en happy counting

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Walking in Light with Christ - Faith, Computing, Diary

Walking in Light with Christ - Faith, Computing, Diary

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