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PHP xpath是干什么的

PHPz
Release： 2020-09-04 15:30:49
Original
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PHP xpath是干什么的

PHP xpath是干什么的？

PHP xpath() 函数

定义和用法

xpath() 函数运行对 XML 文档的 XPath 查询。高佣联盟 www.cgewang.com

如果成功，该函数返回 SimpleXMLElements 对象的一个数组。如果失败，则返回 FALSE。

语法

class SimpleXMLElement
{
string xpath(path)
}
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参数

path 必需。规定要在 XML 文档中搜索的 XPath 路径。

实例

XML 文件

<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don&#39;t forget me this weekend!</body>
</note>
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PHP 代码

<?php
$xml = simplexml_load_file("test.xml");
$result = $xml->xpath("from");
print_r($result);
?>
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上面的代码将输出：

Array
(
[0] => SimpleXMLElement Object
(
[0] => Jani
)
)
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