PHP: How can I remove from String the last word?

Question

How can I remove, with PHP, the last word from a String?

For example the string \"Hi, I\'m Gian Marco\" would become \"Hi, I\'m Gian\".

Answer 1

The regular exprerssion can cause issues when the string has special characters. Why not simply go with this:

$input = "Hi, I'm Gian Marco";
$output = substr($input, 0, strrpos($input, " "));
echo $output;