How to replace last comma in string with "and" using php?

Question

I'm trying to replace the last occurence of a comma in a text with "and" using strrchr() and str_replace().

Example:

$likes = 'Apple, Samsung, Microsoft';
$likes = str_replace(strrchr($likes, ','), ' and ', $likes);

But this replaces the entire last word (Microsoft in this case) including the last comma in this string. How can I just remove the last comma and replace it with " and " ?

I need to solve this using strrchr() as a function. That's why this question is no duplicate and more specific.

Answer 1

To replace only the last occurrence, I think the better way is:

$likes = 'Apple, Samsung, Microsoft';
$likes = substr_replace($likes, ' and', strrpos($likes, ','), 1);

strrpos finds the position of last comma, and substr_replace puts the desired string in that place replacing '1' characters in this case.

Answer 2

You can use regex to find last comma in string. Php preg_replace() replace string with another string by regex pattern.

$likes = 'Apple, Samsung, Microsoft';
$likes = preg_replace("/,([^,]+)$/", " and $1", $likes)

Check result in demo