PHP / regex - 从字符串中获取特定数字

Question

Need quick help with regexp, to search a string for

blah blah blah price 4.000 blah blah

and assign 4.000 or whatever number comes after price to a variable.

Answer 1

preg_match('~price\s+(\S+)~', $input, $matches);
var_dump($matches);