Links

Collection of link helper functions for WordPress themes.

Installation

You can install the package via Composer:

composer require mindkomm/theme-lib-links

Functions

Name	Summary	Type	Returns/Description
get_link_attributes	Gets href attribute for a link tag with proper target and rel attributes.	string or bool	An href attribute with target and rel attributes, when necessary. Returns false if input is empty.
is_external_url	Checks if a URL is external or internal.	bool	Whether the URL is external.
make_anchor_link	Converts an URL to an anchor link.	string	The updated URL.
url_to_domain	Converts an URL to just the domain name together with the TLD.	string	The domain part of the URL.

make_anchor_link

Converts an URL to an anchor link.

Prefix the last segment of a URL with a # to use it as an anchor link.

make_anchor_link( string $url )

Returns: string The updated URL.

Name	Type	Description
$url	string	URL to turn into an anchor link.

PHP

// Output: https://www.mind.ch/onepager#subsection
echo make_anchor_link( 'https://www.mind.ch/onepager/subsection' );

---

is_external_url

Checks if a URL is external or internal.

is_external_url( string $url )

Returns: bool Whether the URL is external.

Name	Type	Description
$url	string	URL to be parsed.

PHP

if ( is_external_url( 'https://example.org' ) ) {
    // Do something
}

Twig

{% if is_external_url('https://www.example.org') %}
    {# Do something #}
{% endif %}

---

url_to_domain

Converts an URL to just the domain name together with the TLD.

url_to_domain( string $url, bool $strip_www = false, int|bool $limit = false )

Returns: string The domain part of the URL.

Name	Type	Description
$url	string	The URL to convert.
$strip_www	bool	Optional. Whether to strip the "www" part of the domain. Default false.
$limit	int|bool	Optional. Limit to a certain amount of characters. Default false.

PHP

<?php $domain = 'https://www.mind.ch/post/blablabla?param=wow'; ?>
<a href="<?php echo $url; ?>"><?php echo url_to_domain( $domain ); ?></a>

Twig

{# url = 'https://www.mind.ch/post/blablabla?param=wow' #}
<a href="{{ url }}">{{ url_to_domain(url) }}</a>

---

get_link_attributes

Gets href attribute for a link tag with proper target and rel attributes.

Checks if the URL is internal or external. Adds a target="_blank" for external urls. Inspired by http://stackoverflow.com/a/25090564/1059980. To catch a security vulnerability, the attribute rel="noopener noreferrer" is added, see https://mathiasbynens.github.io/rel-noopener/ for more info.

get_link_attributes( string $url )

Returns: string|bool An href attribute with target and rel attributes, when necessary. Returns false if input is empty.

Name	Type	Description
$url	string	URL to be parsed.

PHP

<a <?php echo get_link_attributes( 'https://www.mind.ch/blog' ); ?>>MIND Blog</a>

Twig

<a {{ get_link_attributes(url) }}>MIND Blog</a>

---

Twig functions

You need Timber to use these functions.

• is_external_url
• get_link_attributes
• url_to_domain

Support

This is a library that we use at MIND to develop WordPress themes. You’re free to use it, but currently, we don’t provide any support.