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                            # PHP xpath() 函數



## 定義和用法

xpath() 函數運行對 XML 文檔的 XPath 查詢。

如果成功，則返回包含 SimpleXMLElement 對象的一個數組。如果失敗，則返回 false。

### 語法

```
class SimpleXMLElement
{
string xpath(path)
}
```

| 參數 | 描述 |
| --- | --- |
| path | 必需。XPath 路徑。 |

## 例子

XML 文件：

```
<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>George</to>
<from>John</from>
<heading>Reminder</heading>
<body>Don't forget the meeting!</body>
</note>
```

PHP 代碼：

```
<?php
$xml = simplexml_load_file("test.xml");

$result = $xml->xpath("from");

print_r($result);
?>
```

輸出：

```
Array
(
[0] => SimpleXMLElement Object
  (
  [0] => John
  )
)
```




                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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