How do I replace the string value in php in this case?

Question

I'm not a PHP guy so no idea so how to do it, but tried something as given below.

Requirement:

<link href="<?php the_permalink(); ?>">

Currently gives me this output:

<link href="http://example.com/au/">

I need to change a part of URL at runtime using regular expression or any string replace function.

Something like this:

<link href="<?php echo str_replace("/au/","/uk/","<?php the_permalink(); ?>"); ?>"/>

I thought this would work, but instead it gives me this:

<link href="http://example.com/uk/"/>

Please advise what would be the correct solution.

easy : <link href="<?= str_replace("au","uk", the_permalink());?>"/> — SayJeyHi
– SayJeyHi, Commented Mar 13, 2016 at 18:54

Community · Accepted Answer · 2017-05-23 11:50:27Z

3

First, you don't need PHP tags when you are already in PHP tags. Second the function the_permalink() doesn't actually return the value which you want, it just displays it (See this post to see more about the difference of displaying and returing: Wordpress (ACF) function does not return a value)

So you probably want to use get_permalink() here, since this function returns the value you want. Then you can also use it almost as you already tried:

<link href="<?php echo str_replace("/au/","/uk/", get_permalink()); ?>"/>

edited May 23, 2017 at 11:50

CommunityBot

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answered Mar 13, 2016 at 18:56

Rizier123

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Comments

rnevius · Accepted Answer · 2016-03-13 19:13:06Z

2

Instead of manually doing a string replacement each time you need this, I recommend adding the following filter to functions.php:

function au_to_uk_permalink($url) {
    return str_replace('/au/','/uk/', $url);
}
add_filter('the_permalink', 'au_to_uk_permalink');

You can now use the_permalink() function as usual in your templates, and the string substitution will automatically be applied:

<?php the_permalink(); ?>
<!-- Outputs: http://example.com/uk/some-post/ -->

Read more about the_permalink filter in the Codex.

edited Mar 13, 2016 at 19:13

answered Mar 13, 2016 at 19:11

rnevius

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1 Comment

Sanchit Over a year ago

Thanks I'll try this.

peppinoibra · Accepted Answer · 2016-03-13 18:56:41Z

-2

Try this:

<?php
  $link = get_permalink();
  $link = str_replace("/au","/uk",$link);
?>
<link href="<?php echo $link; ?>" />

answered Mar 13, 2016 at 18:56

peppinoibra

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