如何使用 php 正则表达式执行多重搜索？

Question

preg_match("/Designer:(.*?)|Created by:(.*?)\n/i",$sitesource,$designer);

Hi, Can anyone tell me how can I perform multiple searches? For example, if the "designer" keyword not found, then search for "created by" and so on

Answer 1

You can use

preg_match_all("/(?:Created by|Designer):(.*)/i", $sitesource, $designer);

That is, use preg_match_all to match multiple occurrences and merge the two alternatives into a simpler (?:Created by|Designer):(.*) that means

• (?:Created by|Designer) - either Created by or Designer
• : - a colon
• (.*) - capturing group #1: the rest of the line.

See the regex demo .