[Please explain how this code works]

Ok, following is the code for placing ordinal suffixes to certain variables and so I'm trying to understand how it works.

 

$test_c = abs($ranking) % 10;

$ranking_suffix = ((abs($ranking) %100 <21> 4) ? 'th' : (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1)

            ? 'th' : 'st' : 'nd' : 'rd' : 'th'));

 

Basically, its taking the value of $ranking and making it absolute but I've no idea what % 10, % 100, <21> 4 means.

 

Then it runs several conditions to test this variable and assigning the relevant suffixes. 

 

How do these conditions work? ie. what does the first part preceding  ":" do and if ($test_c < 4) what happens?

 

Thanks for your guidance.

[array quesition]

No thank you poco for posting a solution so fast!  Actually I can follow your code more easily as I'm not familiar with php functions.

 

And thanks to Sasa as well for posting another solution, so advanced :-)

 

Both code works and did what I wanted to do.

[array quesition]

I have a string that I wish to divide into 100 words per part so that each part can be displayed on the page separately.

 

ie. $text = "The quick brown fox jumps over the lazy dog (x 100 times)"

 

How do I split this text into an array 100 words at a time?

 

Thanks.