Escaping chars using Regex

  • espritlibre

    (@espritlibre)


    9 years, 7 months ago

    I’m using s2Member Plugin.
    It adds a “wp_s2member_custom_fields” meta to the wp_usermeta table, containing text strings as serialized data.

    A way to search text strings into serialized data is by using a RegEx:

    .*"meta_key";s:[0-9]+:"meta_value".*

    In order to search Naples as City, I’d need to use something like this:

    [userlist meta_key="wp_s2member_custom_fields" meta_value=".*"city";s:[0-9]+:"naples".*" meta_compare="REGEXP"]

    I tried to escape ” chars using \” and “” but it doesn’t work.

    Any help?

Viewing 6 replies - 1 through 6 (of 6 total)
  • Thread Starter espritlibre

    (@espritlibre)

    9 years, 5 months ago

    No way?

    Plugin Author HelgaTheViking

    (@helgatheviking)

    9 years, 5 months ago

    I have no idea what you are asking. Please elaborate and provide context plus examples. And be sure to review the FAQ.

    Thread Starter espritlibre

    (@espritlibre)

    9 years, 5 months ago

    I need to search for a meta_value text that contains double quotes chars [“].

    Eg. $myUnescapedString = ‘.*”city”;s:[0-9]+:”naples”.*’;

    How can I escape double quotes chars?

    Plugin Author HelgaTheViking

    (@helgatheviking)

    9 years, 5 months ago

    For some reason my phone didn’t show me the first post, so all I got was the “no way”, which didn’t make any sense early in the morning.

    SUL supports just about everything in the WP_Query but meta_compare=regex isn’t something that exists as far as I can tell: https://codex.wordpress.org/Class_Reference/WP_Meta_Query

    Your best bet is probably to do something custom via the query_id parameter.

    [userlist query_id="my_custom_meta_query"]

    Now filter the pre_user_query, but only target this specific userlist via the query_id. 

    
add_action('pre_user_query','kia_custom_user_list');
 
function kia_custom_user_list( $u_query ) {

    if ( isset( $u_query->query_vars['query_id'] ) && $u_query->query_vars['query_id'] == 'my_custom_meta_query' ) { 
        //$u_query->query_where .= ' AND ( 
  ( wp_usermeta.meta_key = 'wp_s2member_custom_fields' AND wp_usermeta.meta_value = 'something' );
    }
 
}

    I don’t actually know if you can use regex in SQL and writing the specific query is beyond the level of support I provide for this plugin (even if I knew how to do it, which I don’t).

    Hope that puts you on the right path. Also check out the FAQ, b/c I know S2member filters the pre_user_query too and that may have adverse effects.

    Thread Starter espritlibre

    (@espritlibre)

    9 years, 5 months ago

    Actually, I solved my problem using pre_user_query.
    I was asking if there would be a better/simpler solution.

    Thank you anyway and congrats for your work.

    PS.

    compare (string) – Operator to test. Possible values […] ‘REGEXP’, ‘NOT REGEXP’ and ‘RLIKE’ were added in WordPress 3.7

    Plugin Author HelgaTheViking

    (@helgatheviking)

    9 years, 5 months ago

    I did not know that. Then you should be able to automatically pass meta_compare="REGEXP" like you’ve done, since SUL is just a “pass through” for query parameters. I’ve tested

    
[userlist meta_key="last_name" meta_value="^Dar" meta_compare="REGEXP"]

    and it fetches all users whose last names start with “Dar”. So the problem must be your regex, but that’s voodoo to me, so I couldn’t advise. Perhaps escape the ” like \” ? I really have no idea.

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Escaping chars using Regex’ is closed to new replies.

Tags