PHP匹配特定的句子字母，只获得单词

Question

I'm tiring to write a PHP code for get matched words by using letters, its not the same strpos.

 ex
    $string="How are you robin ?";
    $searchletters="yo";


 in this  "$string" when i search "$searchletters" i need to get 
 the word "you" which have you letters, 

anyone have a idea how to implement this with PHP. Thank You

Answer 1

You can use this regex:

$re = '/\b' . preg_quote($searchletters, '/') . '\w*\b/';

preg_match($re, $string, $m);
echo $m[0] . "
";
//=> you

RegEx Demo