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run code in 300+ PHP versions simultaneously
<?php $a = new DOMDocument; $a->loadXML( '<?xml?><root><foo>a<bar id="b"></bar></foo></root>' ); $newelement = $a->createElement( 'baz', 'c' ); $newelement->setAttribute( 'whynot', 'whatever' ); $a->appendChild( $newelement ); echo $a->saveXML();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: DOMDocument::loadXML(): XML declaration allowed only at the start of the document in Entity, line: 1 in /in/vdfrm on line 4 <?xml version="1.0"?> <baz whynot="whatever">c</baz>

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