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                            # PHP headers_list() 函數



## 定義和用法

headers_list() 函數返回已發送的（或待發送的）響應頭部的一個列表。

該函數返回包含報頭的數組。

### 語法

```
headers_list()
```

## 提示和注釋

提示：如需確定是否已發送報頭，請使用 headers_sent() 函數。

## 例子

```
<?php
setcookie("TestCookie","SomeValue");
header("X-Sample-Test: foo");
header('Content-type: text/plain');
?>

<html>
<body>

<?php
// 發送哪些報頭？
var_dump(headers_list());
?>

</body>
</html>
```




                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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