Splitting strings in PHP and get last part

Question

I need to split a string in PHP by "-" and get the last part.

So from this:

abc-123-xyz-789

I expect to get

"789"

This is the code I've come up with:

substr(strrchr($urlId, '-'), 1) 

which works fine, except:

If my input string does not contain any "-", I must get the whole string, like from:

123

I need to get back

123

and it needs to be as fast as possible.

Answer 1

• split($pattern,$string) split strings within a given pattern or regex (it's deprecated since 5.3.0)
• preg_split($pattern,$string) split strings within a given regex pattern
• explode($pattern,$string) split strings within a given pattern
• end($arr) get last array element

So:

end(split('-',$str))  end(preg_split('/-/',$str))  $strArray = explode('-',$str) $lastElement = end($strArray) 

Will return the last element of a - separated string.

---

And there's a hardcore way to do this:

$str = '1-2-3-4-5'; echo substr($str, strrpos($str, '-') + 1); //      |            '--- get the last position of '-' and add 1(if don't substr will get '-' too) //      '----- get the last piece of string after the last occurrence of '-'