Online PHP editor | output for QS34g

@ 2020-09-09T11:40:56Z

<?php
declare(strict_types=1);

$html = <<<HTML
<form method="post" class="form" data-id="19" data-title="Schema" data-slug="schema" data-message-success="Success!" data-message-invalid-email="Not valid!" data-message-required-field-missing="All fields are required!" data-message-error="Error!">
    --- Form content ---
    <div>with some tags</div>
</form>
HTML;

$doc = new DOMDocument('1.0', 'UTF-8');
$doc->loadHTML($html);

$xpath = new DOMXPath($doc);

foreach ($xpath->query('//form') as $formTag) {
    // remove child nodes of the form tag
    foreach ([...$formTag->childNodes] as $child) {
        $formTag->removeChild($child);
    }

    // output as string, but remove the closing tag
    echo substr($doc->saveHTML($formTag), 0, -7);
}

Output for 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: <form method="post" class="form" data-id="19" data-title="Schema" data-slug="schema" data-message-success="Success!" data-message-invalid-email="Not valid!" data-message-required-field-missing="All fields are required!" data-message-error="Error!">
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.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33: Parse error: syntax error, unexpected '...' (T_ELLIPSIS), expecting ']' in /in/QS34g on line 18
Process exited with code 255.

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