接受用户的正则表达式并显示PHP数据库中的条目

Question

This is in PHP. I am accepting a string in which user enters regular expression and I need to pass this in Select query to extract and display file names which matches the expression.

For eg.if user enters *.pdf , it should return all pdf files; if user enters ^temp, then all files starting with temp should be displayed and so on.

My string is reaching out properly, but i am not able to form the query. I am storing a string in $parameter and the query is like this:

$result=mysql_query("select filename from fileinfo where filetype REGEXP '$parameter'");

Please help me out.

Answer 1

There are 2 problems I see

1. You're using glob syntax (eg *.pdf) instead of an correct regexp syntax. '.*\\\\.pdf' would be a valid regexp equivalent of '*.pdf' (which should always fail, since it's invalid)

2. It looks like you are incorrectly testing FILETYPE instead of FILENAME? Try this instead:

   $result=mysql_query("select filename from fileinfo where filename REGEXP '{$parameter}'");

Finally, try echoing your SQL to ensure you're running the query you think you are. You may have some escaping issues.

Answer 2

尝试这个

$result=mysql_query("select filename from fileinfo where filetype REGEXP '".$parameter."');