PHP Autolink Library

A library to auto convert URLs to links.

Installation via Composer

Add this to composer.json require block.

{
    "require": {
        "asika/autolink": "1.*"
    }
}

Getting Started

This is a quick start to convert URL to link:

use Asika\Autolink\Linker;

$text = Linker::convert($text);
$text = Linker::convertEmail($text);

Use Autolink Object

Create the object:

use Asika\Autolink\Autolink;

$autolink = new Autolink;

Create with options.

$options = array(
    'strip_scheme' => false,
    'text_limit' => false,
    'auto_title' => false
);

$schemes = array('http', 'https', 'skype', 'itunes');

$autolink = new Autolink($options, $schemes);

Convert Text

This is an example text:

This is Simple URL:
http://www.google.com.tw

This is SSL URL:
https://www.google.com.tw

This is URL with multi-level query:
http://example.com/?foo[1]=a&foo[2]=b

We convert all URLs.

$text = $autolink->convert($text);

Output:

This is Simple URL:
<a href="http://www.google.com.tw">http://www.google.com.tw</a>

This is SSL URL:
<a href="https://www.google.com.tw">https://www.google.com.tw</a>

This is URL with multi-level query:
<a href="http://example.com/?foo[1]=a&amp;foo[2]=b">http://example.com/?foo[1]=a&amp;foo[2]=b</a>

Add Attributes

$text = $autolink->convert($text, array('class' => 'center'));

All link will add this attributes:

This is Simple URL:
<a href="http://www.google.com.tw" class="center">http://www.google.com.tw</a>

This is SSL URL:
<a href="https://www.google.com.tw" class="center">https://www.google.com.tw</a>

Convert Email

Email url has no scheme, we use anoter method to convert them, and it will add mailto: at begin of href.

$text = $aurolink->convertEmail($text);

Output

<a href="mailto:foo@example.com">foo@example.com</a>

Options

text_limit

We can set this option by constructor or setter:

$auitolink->textLimit(50);

$text = $autolink->convert($text);

The link text will be:

http://campus.asukademy.com/learning/job/84-fin...

Use Your own limit handler by set a callback:

$auitolink->textLimit(function($url)
{
    return substr($url, 0, 50) . '...';
});

Or use \Asika\Autolink\LinkHelper::shorten() Pretty handler:

$auitolink->textLimit(function($url)
{
    return \Asika\Autolink\LinkHelper::shorten($url, 15, 6);
});

Output:

http://campus.asukademy.com/....../84-find-interns......

auto_title

Use AutoTitle to force add title on anchor element.

$autolink->autoTitle(true);

$text = $autolink->convert($text);

Output:

<a href="http://www.google.com.tw" title="http://www.google.com.tw">http://www.google.com.tw</a>

strip_scheme

Strip Scheme on link text:

$auitolink->stripScheme(true);

$text = $autolink->convert($text);

Output

<a href="http://www.google.com.tw" >www.google.com.tw</a>

Scheme

You can add new scheme to convert URL begin with it, for example: vnc://example.com

$autolink->addScheme('skype')
    ->addScheme('vnc');

Default schemes is http, https, ftp, ftps.

Link Builder

If you don't want to use <a> element as your link, you can set a callback to build link HTML.

$autolink->setLinkBuilder(function($url, $attribs)
{
    $attribs['src'] = htmlspecialchars($url);

    return (string) new \Windwalker\Html\HtmlElement('img', null, $attribs);
});

See: Windwalker Dom Package