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<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2FSRC%2F'>SRC</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2F'>php-8.4.5</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2Fext%2F'>ext</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2Fext%2Fdom%2F'>dom</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2Fext%2Fdom%2Ftests%2F'>tests</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2Fext%2Fdom%2Ftests%2Fbug79701%2F'>bug79701</a>/</p><hr><h3>✏️ Editing: remove_attribute.phpt</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>--TEST--
Bug #79701 (getElementById does not correctly work with duplicate definitions) - remove attribute variation
--EXTENSIONS--
dom
--FILE--
&lt;?php
$dom = Dom\XMLDocument::createFromString(&lt;&lt;&lt;XML
&lt;root&gt;
    &lt;test1 xml:id=&quot;x&quot;/&gt;
    &lt;test2 xml:id=&quot;x&quot;/&gt;
&lt;/root&gt;
XML);

var_dump($dom-&gt;getElementById(&#039;x&#039;)?-&gt;nodeName);
$dom-&gt;getElementById(&#039;x&#039;)-&gt;removeAttribute(&#039;xml:id&#039;);
var_dump($dom-&gt;getElementById(&#039;x&#039;)?-&gt;nodeName);
?&gt;
--EXPECTF--
Warning: Dom\XMLDocument::createFromString(): ID x already defined in Entity, line: 3 in %s on line %d
string(5) &quot;test1&quot;
NULL
</textarea><br>  
            <input type='submit' value='Save'>  
        </form>  
        <p><a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2Fext%2Fdom%2Ftests%2Fbug79701'>🔙 Back</a></p>