PHP DOM操作xml实例：词典(xml) 查询词条

本文链接：https://blog.youkuaiyun.com/houyanhua1/article/details/79119820

dict_select.php:

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<?php
		$res = "";
		if (isset($_POST['word'])) {
			$word = trim($_POST['word']);
			$dom = new DOMDocument('1.0','utf-8');
			$dom->load('dict.xml');
			$names = $dom->getElementsByTagName('name');
			$means = $dom->getElementsByTagName('mean');
			//循环查询
			foreach ($names as $k => $name) {
				if ($name->nodeValue == $word) {  //这种顺序查找速度非常慢，可以用XPath来提高查找速度
					//找到,就把对应的mean保存起来,然后退出循环
					$res = $means->item($k)->nodeValue;
					break;
				}else {
					//赋值，提示信息
					$res = "没有该词条";
				}
			}
		}
	?>
	<form action="" method="post">
		<label for="">请输入要查询的单词：</label>
		<input type="text" name="word" value="<?php echo isset($word)? $word:''?>"> 
		<input type="submit" value="查询">
	</form>
	<p>
		<?php echo $res;?>
	</p>
</body>
</html>

dict.xml:

<?xml version="1.0" encoding="utf-8"?>
<cetsix>
	<word>
		<name>you can you up</name>
		<mean>你行你上</mean>
		<lx>you can you up ,no can no bebe</lx>
	</word>
	<word>
		<name>no zuo no die</name>
		<mean>不作死就不会死</mean>
		<lx>no zuo no die</lx>
	</word>
</cetsix>