In this tutorial, we are going to learn about how to get the last n characters of a string in PHP.
In PHP, strings are the sequence of characters, where the index of the first character is
0, the second character is
1, third character is
3, last character index is -1 etc.
Negative indexes are used to access the characters from the end of a string.
To get the last n characters of a string in PHP, we can use the built-in
substr() function by passing the first argument as a string and second argument
-n.So, it returns the last n
characters of a string.
-n is the number of characters we need to extract from the end position of a string.
Here is an example, that extracts the last 3 characters from a string:
$string = "Google"; $lastthree = substr($string, -3); echo $lastthree;
The substr() function accepts three arguments, the first one is
string, the second is start position, third is length (which is optional). Then returns the specified part of a string from the start position.
Syntax : substr(string, start, length)