(PHP 8 >= 8.3.0)
DOMElement::toggleAttribute — 切换属性
范例 #1 DOMElement::toggleAttribute() 范例
<?php
$dom = new DOMDocument();
$dom->loadXML("<?xml version='1.0'?><container selected=\"\"/>");
var_dump($dom->documentElement->toggleAttribute('selected'));
echo $dom->saveXML() . PHP_EOL;
var_dump($dom->documentElement->toggleAttribute('selected'));
echo $dom->saveXML();
?>
以上示例将输出
bool(false) <?xml version="1.0"?> <container/> bool(true) <?xml version="1.0"?> <container selected=""/>