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Informations about the package url-preview

Page Meta 🕵

Page Meta is a PHP library than can retrieve detailed info on any URL from the internet! It uses data from HTML meta tags and OpenGraph with fallback to detailed HTML scraping.

Highlights

Potential use cases

How to use

Installation

Add layered/page-meta as a dependency in your project's composer.json file:

Usage

Create a UrlPreview instance, then call loadUrl($url) method with your URL as first argument. Preview data is retrieved with get($section) or getAll() methods:

Behind the scenes

The library downloads the HTML source of the url you provided, then uses specialized scrapers to extract pieces of information. Core scrapers can be seen in src/scrapers/, and they extract general info for a page: title, author, description, page type, main image, etc. If you would like to extract a new field, see Extending the library section.

User Agent or extra headers can make a big difference when downloading HTML from a website. There are some websites that forbid scraping and hide the content when they detect a tool like this one. Make sure to read their dev docs & TOS.

The default User Agent is blocked on sites like Twitter, Instagram, Facebook and others. A workaround is to use this one (thanks for the tip PVGrad):

'HTTP_USER_AGENT' => 'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)'

Returned data

Returned data will be an Array with following format:

See UrlPreview::getAll() for info on each returned field.

Public API

UrlPreview class provides the following public methods:

__construct(array $headers): UrlPreview

Start the UrlPreview instance. Pass extra headers to send when requesting the page URL

loadUrl(string $url): UrlPreview

Load and start the scrape process for any valid URL

getAll(): array

Get all data scraped from page

Return: Array with scraped data in following format:

get(string $section): array

Get data in one scraped section site, page, profile or app_links

Return: Array with section scraped data. See UrlPreview::getAll() for data format

addListener(string $eventName, callable $listener, int $priority = 0): UrlPreview

Attach an event on UrlPreview for data processing or scrape process. Arguments:

Extending the library

If there's need to more scraped data for a URL, more functionality can be attached to PageMeta library. Example for returing the 'Terms and Conditions' link from pages:

More

Please report any issues here on GitHub.

Any contributions are welcome

All versions of url-preview with dependencies

PHP Build Version
Package Version
Requires fabpot/goutte Version ~4.0
symfony/event-dispatcher Version ~5.1
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