PHP code example of esperecyan / html-filter

1. Go to this page and download the library: Download esperecyan/html-filter library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

esperecyan / html-filter example snippets



esperecyan\webidl\TypeError;
use esperecyan\url\URL;

$filter = new \esperecyan\html_filter\Filter([
    '*' => [
        'dir' => ['ltr', 'rtl', 'auto'],
        'lang' => '/^[a-z]+(-[0-9a-z]+)*$/iu',
        'title',
        'translate' => ['', 'yes', 'no'],
    ],
    'a' => ['href' => 'isURLWithNetworkScheme'],
    'br',
    'img' => ['alt', 'src' => 'isURLWithNetworkScheme'],
    'p',
    'time' => 'datetime',
]);
$filter->setLogger(new class extends \Psr\Log\AbstractLogger {
    public function log($level, $message, array $context = []) {
        echo "$level: $message\n";
    }
});
var_dump($filter->filter(<<<'EOD'
<script>
    window.alert('foobar');
</script>
<a href="https://example.com/">例示用ドメイン</a>
<a href="./file.html" title="テスト">相対URL</a>
<bR data-clear="">
<p dir="ltr" lang='"invalid"'>アリス</p>
<p dir="LtR" LanG='ja'>ボブ</p>
EOD
));

function isURLWithNetworkScheme(string $value): bool {
    try {
        $url = new URL($value);
    } catch (TypeError $exception) {
        return false;
    }
    return in_array($url->protocol, ['ftp:', 'http:', 'https:']);
}




$filter = new \esperecyan\html_filter\Filter(['a', 'blockquote', 'code', 'h1', 'h2', 'pre']);
$filter->setLogger(new class extends \Psr\Log\AbstractLogger {
    public function log($level, $message, array $context = []) use ($logged) {
        $logged = true;
    }
});
$output = $filter->filter($input);

$storage = $logged ? $output : $input;


<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>XHTML文書</title>
    </head>
    <body>
        <?= (new \esperecyan\html_filter\Filter())->filter($storage)