How to make preg_match to find whole word but not separate hyphen-words?

问题

if (preg_match('#\b'.$rawword.'\b#i',$body)) {   

This code finds whole words, but if they are a hyphen word like "ABLE-BODIED" it will find ABLE and BODIED separately. How can modify the expression to accommodate for the dash?

回答1:

You can use lookbehind and lookahead operators. This operators looks in behind and after but not match them.

for example use \b(?<!-)xyz(?!-)\b for finding whole words of xyz that doesn't have - before or after.

来源：https://stackoverflow.com/questions/5781451/how-to-make-preg-match-to-find-whole-word-but-not-separate-hyphen-words