Question

very simple preg replace but I can’t think right.

I need to search for keywords such as: {this_is_a_key} and replace it with something else.

$text = 'this is a sentence with a {this_is_a_key} in it';
echo preg_replace('/\{\w{1}\}/i','keyword',$text);
//output should be
//## "this is a sentence with a keyword in it" ##//

so far this doesn’t work for me and I have tried a combination of () and [] but no luck

Answer 1

\w{1} means one “word character”. Try \w+ or [^\}]+ instead.

Also, when using \w, there’s no need for the i modifier.