Online PHP editor | output for Qdl34

@ 2021-02-08T13:41:23Z

<?php

$keywords = [
    'keywords' => 'www.1.com',
    'hello' => 'www.2.com',
    'there' => 'www.3.com',
    'are' => 'www.4.com',
];

$sentence = '
<div>
    <h1>Hello</h1>
    <h2>Hello there blablabla</h2>
    <p>Hello, there are keywords</p>
    <p>Hello, there are keywords</p>
    <p>Hello, there are keywords</p>
    <p>Hello, there are keywords</p>
    <p>Hello, there are keywords</p>
</div>';

$dom = new DOMDocument;
$dom->loadHTML($sentence, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
foreach ($dom->getElementsByTagName('p') as $p) {
    $p->nodeValue = preg_replace_callback(
        '~\b(?:' . implode('|', array_keys($keywords)) . ')\b~i',
        function($m) use ($keywords) {
            return $keywords[strtolower($m[0])];
        },
        $p->nodeValue
    );
}
echo $dom->saveHTML();

Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.4.16, 8.5.0 - 8.5.1: <div> <h1>Hello</h1> <h2>Hello there blablabla</h2> <p>www.2.com, www.3.com www.4.com www.1.com</p> <p>www.2.com, www.3.com www.4.com www.1.com</p> <p>www.2.com, www.3.com www.4.com www.1.com</p> <p>www.2.com, www.3.com www.4.com www.1.com</p> <p>www.2.com, www.3.com www.4.com www.1.com</p> </div>
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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