PMD for Salesforce Code Check

PMD is a source code analyzer. It finds common programming flaws like unused variables, empty catch blocks, unnecessary object creation, and so forth. It supports Java, JavaScript, Apex and Visualforce, PLSQL, Apache Velocity, XML, XSL.
Additionally it includes CPD, the copy-paste-detector. CPD finds duplicated code in Java, C, C++, C#, Groovy, PHP, Ruby, Fortran, JavaScript, PLSQL, Apache Velocity, Scala, Objective C, Matlab, Python, Go, Swift and Apex and Visualforce.

Please note, that this module requires a Java 8 runtime environment.

Use link –
to install PMD Software in eclipse from Help->Install New Software->Add Repository.

After installation Just right click on your project and select ‘Check Code‘ in PMD
You can generate PMD report which create Report folder in your project location.


PHP Shorthand If/Else Using Ternary Operators (?:)

n essential part of programming is evaluating conditions using if/else and switch/case statements. If / Else statements are easy to code and global to all languages. If / Else statements are great but they can be too long.

I preach a lot about using shorthand CSS and using MooTools to make JavaScript relatively shorthand, so I look towards PHP to do the same. If/Else statements aren’t optimal (or necessary) in all situations. Enter ternary operators.

Ternary operator logic is the process of using “(condition) ? (true return value) : (false return value)” statements to shorten your if/else structures.

What Does Ternary Logic Look Like?

/* most basic usage */
$var = 5;
$var_is_greater_than_two = ($var > 2 ? true : false); // returns true

What Are The Advantages of Ternary Logic?

There are some valuable advantages to using this type of logic:

  • Makes coding simple if/else logic quicker
  • You can do your if/else logic inline with output instead of breaking your output building for if/else statements
  • Makes code shorter
  • Makes maintaining code quicker, easier
  • Job security?

Tips for Using Ternary Operators

Here are a few tips for when using “?:” logic:

  • Don’t go more levels deep than what you feel comfortable with maintaining.
  • If you work in a team setting, make sure the other programmers understand the code.
  • recommends avoiding stacking ternary operators. “Is [sic] is recommended that you avoid “stacking” ternary expressions. PHP’s behaviour when using more than one ternary operator within a single statement is non-obvious.”
  • If you aren’t experienced with using ternary operators, write your code using if/else first, then translate the code into ?’s and :’s.
  • Use enough parenthesis to keep your code organized, but so many that you create “code soup.”

More Sample Usage

Here are a couple more uses of ternary operators, ranging from simple to advanced:

/* another basic usage */

$message = 'Hello '.($user->is_logged_in() ? $user->get('first_name') : 'Guest');
/* echo, inline */

echo 'Based on your score, you are a ',($score > 10 ? 'genius' : 'nobody'); //harsh!
/* a bit tougher */
$score = 10;
$age = 20;
echo 'Taking into account your age and score, you are: ',($age > 10 ? ($score < 80 ? 'behind' : 'above average') : ($score < 50 ? 'behind' : 'above average')); // returns 'You are behind'
/* "thankfully-you-don't-need-to-maintain-this" level */
 $days = ($month == 2 ? ($year % 4 ? 28 : ($year % 100 ? 29 : ($year %400 ? 28 : 29))) : (($month - 1) % 7 % 2 ? 30 : 31)); //returns days in the given month

PHP date formats

d – day of the month 2 digits (01-31)
j – day of the month (1-31)
D – 3 letter day (Mon – Sun)
l – full name of day (Monday – Sunday)
N – 1=Monday, 2=Tuesday, etc (1-7)
S – suffix for date (st, nd, rd)
w – 0=Sunday, 1=Monday (0-6)
z – day of the year (1=365)

W – week of the year (1-52)

F – Full name of month (January – December)
m – 2 digit month number (01-12)
n – month number (1-12)
M – 3 letter month (Jan – Dec)
t – Days in the month (28-31)

L – leap year (0 no, 1 yes)
o – ISO-8601 year number (Ex. 1979, 2006)
Y – four digit year (Ex. 1979, 2006)
y – two digit year (Ex. 79, 06)

a – am or pm
A – AM or PM
B – Swatch Internet time (000 – 999)
g – 12 hour (1-12)
G – 24 hour c (0-23)
h – 2 digit 12 hour (01-12)
H – 2 digit 24 hour (00-23)
i – 2 digit minutes (00-59)
s 0 2 digit seconds (00-59)

OTHER e – timezone (Ex: GMT, CST)
I – daylight savings (1=yes, 0=no)
O – offset GMT (Ex: 0200)
Z – offset in seconds (-43200 – 43200)
r – full RFC 2822 formatted date

Difference between 2 dates in days, minutes and seconds

function dateDifference($date1, $date2)
$diff = abs($date1 – $date2);
$day = $diff/(60*60*24); // in day
$dayFix = floor($day);
$dayPen = $day – $dayFix;
if($dayPen > 0)
$hour = $dayPen*(24); // in hour (1 day = 24 hour)
$hourFix = floor($hour);
$hourPen = $hour – $hourFix;
if($hourPen > 0)
$min = $hourPen*(60); // in hour (1 hour = 60 min)
$minFix = floor($min);
$minPen = $min – $minFix;
if($minPen > 0)
$sec = $minPen*(60); // in sec (1 min = 60 sec)
$secFix = floor($sec);
$str = “”;
if($dayFix > 0)
$str.= $dayFix.” day “;
if($hourFix > 0)
$str.= $hourFix.” hour “;
if($minFix > 0)
$str.= $minFix.” min “;
if($secFix > 0)
$str.= $secFix.” sec “;
return $str;
echo ‘<br>Difference is : ‘.dateDifference(“2011-09-18 10:00:00”, date(‘Y-m-d H:i:s’));

How can I execute PHP code on my existing myfile.html page?

When a web page is accessed, the server checks the extension to know how to handle the page. Generally speaking if it sees a .htm or .html file, it sends it right to the browser because it doesn’t have anything to process on the server. If it sees a .php extension (or .shtml, or .asp, etc), it knows that it needs to execute the appropriate code before passing it along to the browser.

Here is the problem: You find the perfect script, and you want to run it on your site, but you need to included PHP on your page for it to work. You could just rename your pages to yourpage.php instead of yourpage.html, but you already have incoming links or search engine ranking so you don’t want to change the file name. What can you do?

First let me preface this by saying that if you are creating a new file anyway, you may as well use .php. This is to help people who have existing .html pages they need to execute PHP on.

The way to execute PHP on a .html page is to modify your .htaccess file. This file may be hidden, so depending upon your FTP program you may have to modify some settings to see it. Then you just need to add this line for .html:

AddType application/x-httpd-php .html
Or for .htm
AddType application/x-httpd-php .htm

If you only plan on including the PHP on one page, it is better to setup this way:

AddType application/x-httpd-php .html

This code will only make the PHP executable on the yourpage.html file, and not on all of your html pages.

Things to watch out for:

  • If you have an existing .htaccess file, add this to it, do not overwrite it or other settings may stop working! Always be very careful with your .htaccess file and ask your host if you need help
  • Anything in your .html files that starts with <? will now be executed as PHP, so if it’s in your file for some other reason (an XML tag for example) you will need to echo these lines to prevent errors.For example:


If you specify ON DUPLICATE KEY UPDATE, and a row is inserted that would cause a duplicate value in a UNIQUE index or PRIMARY KEY, an UPDATE of the old row is performed. For example, if column a is declared as UNIQUE and contains the value 1, the following two statements have identical effect:

INSERT INTO table (a,b,c) VALUES (1,2,3)

UPDATE table SET c=c+1 WHERE a=1;

The ON DUPLICATE KEY UPDATE clause can contain multiple column assignments, separated by commas.

With ON DUPLICATE KEY UPDATE, the affected-rows value per row is 1 if the row is inserted as a new row, and 2 if an existing row is updated.

INSERT INTO table (a,b,c) VALUES (1,2,3),(4,5,6)

That statement is identical to the following two statements:

INSERT INTO table (a,b,c) VALUES (1,2,3)
INSERT INTO table (a,b,c) VALUES (4,5,6)

File/folder Permission

Note that mode is not automatically assumed to be an octal value, so strings (such as “g+w”) will not work properly. To ensure the expected operation, you need to prefix mode with a zero (0):

chmod("/somedir/somefile", 755); // decimal; probably incorrect
chmod("/somedir/somefile", "u+rwx,go+rx"); // string; incorrect
chmod("/somedir/somefile", 0755); // octal; correct value of mode

The mode parameter consists of three octal number components specifying access restrictions for the owner, the user group in which the owner is in, and to everybody else in this order.

// Read and write for owner, nothing for everybody else
chmod("/somedir/somefile", 0600);
// Read and write for owner, read for everybody else
chmod("/somedir/somefile", 0644);
// Everything for owner, read and execute for others
chmod("/somedir/somefile", 0755);
// Everything for owner, read and execute for owner's group
chmod("/somedir/somefile", 0750);

Change File Permission Owner

// File name and username to use
$file_name= "foo.php";
$path = "/home/sites/public_html/sandbox/" . $file_name ;
$user_name = "root";

// Set the user
chown($path, $user_name);

// Check the result
$stat = stat($path);