How to remove words (count limited) of a string in PHP

Question

Q: How to remove words (count limited to 3 chars) of a string in PHP

Example String: "Remove all words of 3 letters" Expected String: "Remove words letters"

Basically, remove all words that are less than equal to 3 counts.

Thanks.

Answer 1

Regular expression to select words between 1 and 3 in length:

preg_replace('/\b\w{1,3}\b\s*/', '', $sentence);

The \\b is to match a word boundary, the \\w denotes a "word" character. The \\s* at the end makes sure that excess spaces are removed too.

Answer 2

Use the word boundry:

preg_replace('/\b(?:^|\s\w{1,3})\b/', '', $sentance);

Jack's answer only matched all and of.

This expression looks for the word boundaries and will match on that.