laravel输出xml数据，php输出xml格式数据

妖狐艹你老母 2022-05-13 16:29 355阅读 0赞

背景：  
seo的同事要批量提交xml格式的数据到搜索引擎，目前项目用laravel框架开发的，所以就有了这篇文章的诞生了。网上有不少关于php输出xml格式的例子，小弟不才也搬过，只是在php文件上面测试是没问题的，把它搬到laravel框架里面，就有有坑了，主要原因是header头的问题。  
laravel框架怎么返回xml格式数据？如果用header(“Content-type: text/xml”);这样的话是没有效果的，会提示这样的错误：

This page contains the following errors:
    error on line 14 at column 6: XML declaration allowed only at the start of the document
    Below is a rendering of the page up to the first error.

laravel框架在输出xml的时候会自行用text/html方式返回数据，解决办法：  
需要return response($xml,200)->header(“Content-type”,“text/xml”);这样的方式才能改变header头

## laravel返回xml数据格式例子： ##

/**
      * 神马搜索数据结构化，written:yangxingyi Data:2018-10-25 11:15
      */
     public function index(Request $request){
            $data_array = array(
                array(
                    'title' => 'title1',
                    'content' => 'content1',
                    'pubdate' => '2009-10-11',
                ),
                array(
                    'title' => 'title2',
                    'content' => 'content2',
                    'pubdate' => '2009-11-11',
                )
            );
            $title_size = 1;
            $xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
            $xml .= "<article>\n";
            foreach ($data_array as $data) {
                $xml .= $this->create_item($data['title'], $title_size, $data['content'], $data['pubdate']);
            }
            $xml .= "</article>\n";
            #echo $xml;
    
            return response($xml,200)->header("Content-type","text/xml");
    
        }
    
     /**
      * 神马搜索数据结构化，节点的具体内容 written:yangxingyi
      */
        private function create_item($title_data, $title_size, $content_data, $pubdate_data)
        {
            $item = "<item>\n";
            $item .= "<title size=\"" . $title_size . "\">" . $title_data . "</title>\n";
            $item .= "<content>" . $content_data . "</content>\n";
            $item .= " <pubdate>" . $pubdate_data . "</pubdate>\n";
            $item .= "</item>\n";
            return $item;
        }

## PHP生成xml格式的数据直接加上 header(“Content-type: text/xml”);头就行了 ##

<?php
     header("Content-type: text/xml");
    $data_array = array(
        array(
        'title' => 'title1',
        'content' => 'content1',
            'pubdate' => '2009-10-11',
        ),
        array(
        'title' => 'title2',
        'content' => 'content2',
        'pubdate' => '2009-11-11',
        )
    );
    $title_size = 1;
    $xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
    $xml .= "<article>\n";
    foreach ($data_array as $data) {
    $xml .= create_item($data['title'], $title_size, $data['content'], $data['pubdate']);
    }
    $xml .= "</article>\n";
    echo $xml;
    //创建XML单项
    function create_item($title_data, $title_size, $content_data, $pubdate_data)
    {
        $item = "<item>\n";
        $item .= "<title size=\"" . $title_size . "\">" . $title_data . "</title>\n";
        $item .= "<content>" . $content_data . "</content>\n";
        $item .= " <pubdate>" . $pubdate_data . "</pubdate>\n";
        $item .= "</item>\n";
        return $item;
    }
    ?>

参考文章：[https://www.jb51.net/article/31455.htm][https_www.jb51.net_article_31455.htm]

[https_www.jb51.net_article_31455.htm]: https://www.jb51.net/article/31455.htm