Apply php function to shortcode

Question

I'll start by saying I'm fairly new to coding so I'm probably going about this the wrong way.

Basically I've got the below php function that changes urls to the page title of the url instead of a plain web address. So instead of www.google.com it would appear as Google.

<?php
function get_title($url){
  $str = file_get_contents($url);
  if(strlen($str)>0){
    $str = trim(preg_replace('/\s+/', ' ', $str)); // supports line breaks inside <title>
    preg_match("/\<title\>(.*)\<\/title\>/i",$str,$title); // ignore case
    return $title[1];
  }
} 
?>

This is great but to implement this I have to use the below code.

echo get_title("http://www.google.com/");

However this just works on a predefined URL. What I have set up on my site at the moment is a shortcode in a html widget.

<a href='[rwmb_meta meta_key="link_1"]'>[rwmb_meta meta_key="link_1"]</a>

This shortcode displays a url/link that is input by the user in the backend of Wordpress and displays it on the frontend as a link. However I want to apply the get_title function to the above shortcode so instead of the web address it shows the page title.

Is this possible?

Thanks in advance.

Leo Tahk · Accepted Answer · 2017-09-07 16:40:23Z

0

for name of a url from a link you can use parse_url($url, PHP_URL_HOST);

easier way would be to have an array of links for example

$links[] = 'some1 url here';
$links[] = 'some2 url here';

then just loop your $links array with the function.

foreach($links as $link)get_title($link);

https://metabox.io/docs/get-meta-value/

try:

$files = rwmb_meta( 'info' ); // Since 4.8.0
$files = rwmb_meta( 'info', 'type=file' ); // Prior to 4.8.0

if ( !empty( $files ) ) {
    foreach ( $files as $file ) {
        echo $file['url'];
    }
}

edited Sep 7, 2017 at 16:40

answered Sep 7, 2017 at 1:07

Leo Tahk

4201 gold badge6 silver badges17 bronze badges

Sign up to request clarification or add additional context in comments.

7 Comments

Baskerville Over a year ago

Thanks for your reply. I added your code to the functions.php file. However it hasnt affected the shortcode, what else do I need to do to get this to work?

Leo Tahk Over a year ago

oh its just an example from the docs to show that you can take links from the rwmb_meta, in your example it is probably not $file['url'], but $file['link_1']

Leo Tahk Over a year ago

its still unclear for me what you are trying to do, where do you get your links from and why would you want to change titles..

Baskerville Over a year ago

I'm using a wordpress plugin called metabox, below is a few screenshots of the backend and the frontend which might give you a better idea. imgur.com/a/GQGhx

Leo Tahk Over a year ago

from the metabox.io/docs/get-meta-value, echo $url = get_post_meta( get_the_ID(), 'field_id', true );

|

Collectives™ on Stack Overflow

Apply php function to shortcode

1 Answer 1

7 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

7 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related