amp converter
1.0.0
Uma biblioteca para converter artigos HTML, postagens de blog ou conteúdo semelhante em AMP (Accelerated Mobile Pages).
Nota : Esta biblioteca não se destina a converter documentos HTML inteiros, se você deseja converter uma página inteira você deve usar uma biblioteca mais avançada, por exemplo: Lullabot/amp-library
composer require magyarandras/amp-converter
Exemplo simples:
Certifique-se de que seu código HTML não contenha tags ou atributos inválidos em HTML5, caso contrário, o AMP gerado também será inválido.
<?php
use magyarandras AMPConverter Converter ;
/*
If you have images with unknown dimensions in your HTML code and use relative URLs, you must pass the images' base URL to the constructor.
Examples:
$converter = new Converter('https://example.com');
$converter = new Converter('https://cdn.example.com');
*/
$ converter = new Converter ();
//Load built-in converters
$ converter -> loadDefaultConverters ();
//HTML to convert
$ html = '
<p><strong>This is a sample HTML code generated by TinyMCE.</strong></p>
<p><strong><img src="https://cdn.example.com/photo/example_960_720.jpg" alt="" width="960" height="640" /></strong></p>
<p><span style="font-family: ' times new roman ' , times;">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</span></p>
<p style="text-align: center;"><iframe src="https://www.youtube.com/embed/gYJ03GyrSrM" width="560" height="314" allowfullscreen="allowfullscreen"></iframe></p>
<p style="text-align: center;"> </p>
<blockquote class="twitter-tweet">
<p dir="ltr" lang="en">Check out the latest post on the AMP Blog to learn how <a href="https://twitter.com/AdobeExpCloud?ref_src=twsrc%5Etfw">@AdobeExpCloud</a> has been working to seamless integrate AMP support into its applications ⚡<br /><br />Learn more here <a href="https://t.co/hX3QmJ707x">https://t.co/hX3QmJ707x</a></p>
— AMP Project (@AMPhtml) <a href="https://twitter.com/AMPhtml/status/1248666798901194753?ref_src=twsrc%5Etfw">April 10, 2020</a></blockquote>
' ;
//Convert html to amp html
$ amphtml = $ converter -> convert ( $ html );
//Get the necessary amp components
$ amp_scripts = $ converter -> getScripts ();
print_r ( $ amphtml );
echo PHP_EOL ;
print_r ( $ amp_scripts );A saída:
< p > < strong > This is a sample HTML code generated by TinyMCE. </ strong > </ p >
< p > < strong > < amp-img src =" https://cdn.example.com/photo/example_960_720.jpg " width =" 960 " height =" 640 " alt layout =" responsive " > </ amp-img > </ strong > </ p >
< p > < span > Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. </ span > </ p >
< p > < amp-youtube data-videoid =" gYJ03GyrSrM " width =" 480 " height =" 270 " layout =" responsive " > </ amp-youtube > </ p >
< p > </ p >
< amp-twitter width =" 375 " height =" 472 " layout =" responsive " data-tweetid =" 1248666798901194753 " > </ amp-twitter > Array
(
[0] => <script async custom-element="amp-youtube" src="https://cdn.ampproject.org/v0/amp-youtube-0.1.js"></script>
[1] => <script async custom-element="amp-twitter" src="https://cdn.ampproject.org/v0/amp-twitter-0.1.js"></script>
)
Você pode especificar quais conversores usar carregando-os manualmente:
<?php
use magyarandras AMPConverter Converter ;
use magyarandras AMPConverter TagConverter AMPImgZoom ;
use magyarandras AMPConverter TagConverter AMPYoutube ;
//PHP 7+ syntax:
//use magyarandrasAMPConverterTagConverter{AMPImgZoom,AMPYoutube}
$ converter = new Converter ();
$ converter -> addConverter ( new AMPImgZoom ());
$ converter -> addConverter ( new AMPYoutube ());
$ amphtml = $ converter -> convert ( $ html );
$ amp_scripts = $ converter -> getScripts ();
print_r ( $ amphtml );
print_r ( $ amp_scripts );Se você possui imagens com dimensões desconhecidas em seu código HTML (evite esta situação se possível) e usa URLs relativas, você deve passar a URL base das imagens para o construtor. Você também pode especificar o limite de tempo para obter o tamanho de uma única imagem (o padrão é 10 segundos). (Observação: o limite de tempo se aplica a cada imagem, não a todo o processo)
<?php
use magyarandras AMPConverter Converter ;
$ converter = new Converter ([
' image_base_url ' => ' https://example.com ' , //This base URL will be used if the src of an image is a relative path.
' image_timeout ' => 5 //Obtaining the size of a single image (downloading the required data) can't take longer than 5 seconds.
]);
//Load built-in converters
$ converter -> loadDefaultConverters ();
//HTML to convert
$ html = '
<p><strong>This is a sample HTML code generated by TinyMCE.</strong></p>
<p><strong><img src="images/picture.jpg" alt="Sample image" /></strong></p>
' ;
//Convert html to amp html
$ amphtml = $ converter -> convert ( $ html );
//Get the necessary amp components
$ amp_scripts = $ converter -> getScripts ();
print_r ( $ amphtml );
echo PHP_EOL ;
print_r ( $ amp_scripts );A biblioteca não suporta tudo pronto para uso, mas você pode estendê-la com seus próprios conversores (ou pode substituir os existentes, se necessário).
Por exemplo, considere o seguinte: Você usa uma biblioteca de contagem regressiva jQuery em alguns de seus artigos/postagens de blog e deseja converter o código a seguir em AMP.
<!-- The following line should be replaced with amp-date-countdown component -->
< div data-countdown =" 2038/01/19 " > </ div >
<!-- Countdown library: http://hilios.github.io/jQuery.countdown/examples/multiple-instances.html -->
< script >
$ ( '[data-countdown]' ) . each ( function ( ) {
var $this = $ ( this ) , finalDate = $ ( this ) . data ( 'countdown' ) ;
$this . countdown ( finalDate , function ( event ) {
$this . html ( event . strftime ( '%D days %H:%M:%S' ) ) ;
} ) ;
} ) ;
</ script >Você pode criar uma classe conversora customizada que implemente TagConverterInterface.
<?php
class CountdownConverter implements magyarandras AMPConverter TagConverterInterface
{
private $ necessary_scripts = [];
private $ extension_scripts = [
' <script async custom-element="amp-date-countdown" src="https://cdn.ampproject.org/v0/amp-date-countdown-0.1.js"></script> ' ,
' <script async custom-template="amp-mustache" src="https://cdn.ampproject.org/v0/amp-mustache-0.2.js"></script> '
];
public function convert ( DOMDocument $ doc )
{
$ query = ' //div[@data-countdown] ' ;
$ xpath = new DOMXPath ( $ doc );
$ entries = $ xpath -> query ( $ query );
if ( $ entries -> length > 0 ) {
$ this -> necessary_scripts = $ this -> extension_scripts ;
}
foreach ( $ entries as $ tag ) {
//Although in this example there isn't any validation, you definitely should check if the date is valid.
$ timestamp = strtotime ( $ tag -> getAttribute ( ' data-countdown ' ));
$ countdown = $ doc -> createElement ( ' amp-date-countdown ' );
$ countdown -> setAttribute ( ' timestamp-seconds ' , $ timestamp );
$ countdown -> setAttribute ( ' layout ' , ' fixed-height ' );
$ countdown -> setAttribute ( ' height ' , ' 50 ' );
$ template = $ doc -> createElement ( ' template ' );
$ template -> setAttribute ( ' type ' , ' amp-mustache ' );
$ paragraph = $ doc -> createElement ( ' p ' );
$ paragraph -> setAttribute ( ' class ' , ' p1 ' );
$ text = $ doc -> createTextNode ( ' {{d}} days, {{h}} hours, {{m}} minutes and {{s}} seconds ' );
$ paragraph -> appendChild ( $ text );
$ template -> appendChild ( $ paragraph );
$ countdown -> appendChild ( $ template );
$ tag -> parentNode -> replaceChild ( $ countdown , $ tag );
}
return $ doc ;
}
public function getNecessaryScripts ()
{
return $ this -> necessary_scripts ;
}
}Usando o conversor personalizado:
<?php
require_once ' vendor/autoload.php ' ;
require_once ' CountdownConverter.php ' ;
use magyarandras AMPConverter Converter ;
$ converter = new Converter ();
//Load built-in converters
$ converter -> loadDefaultConverters ();
$ converter -> addConverter ( new CountdownConverter ());
$ html = ' <div><h1>Hello!</h1><div data-countdown="2038/01/19"></div></div> ' ;
//Convert html to amp html
$ amphtml = $ converter -> convert ( $ html );
//Get the necessary amp components
$ amp_scripts = $ converter -> getScripts ();
print_r ( $ amphtml );
print_r ( $ amp_scripts );
