探讨:array2xml和xml2array以及xml与array的互相转化

php在做后台服务器的时候，经常会遇到这种情况，需要解析来自前台的xml文件，并将数据以xml格式返回，在这种情况下，xml与php中关联数组的转化是非常频繁的事情。比如flex和其他客户端程序与服务器的交互，经常会使用这种方法。下面是我归纳的两个方法，大大简化了xml与数组相互转化的工作量。

复制代码 代码如下:

/**
     *
     * 将简单数组转化为简单的xml
     * @param string $data  要进行转化的数组
     * @param string $tag   要使用的标签
     * @example
     * $arr = array(
        'rtxAccount'=>'aaron','ipAddr'=>'192.168.0.12',
        'conferenceList'=>array('conference'=>
                            array(
                                array('conferenceId'=>1212,'conferenceTitle'=>'quanshi 444','smeAccount'=>'https://www.jb51.net'),
                                array('conferenceId'=>454,'conferenceTitle'=>'quanshi meetting','smeAccount'=>'https://www.jb51.net'),
                                array('conferenceId'=>6767,'conferenceTitle'=>'quanshi meetting','smeAccount'=>'https://www.jb51.net'),
                                array('conferenceId'=>232323,'conferenceTitle'=>'quanshi uuu','smeAccount'=>'https://www.jb51.net'),
                                array('conferenceId'=>8989,'conferenceTitle'=>'quanshi meetting','smeAccount'=>'https://www.jb51.net'),
                                array('conferenceId'=>1234343212,'conferenceTitle'=>'quanshi meetting','smeAccount'=>'https://www.jb51.net')
                                )
                            )
        );
        转化为：
        <rtxAccount>aaron</rtxAccount>
        <ipAddr>192.168.0.12</ipAddr>
        <conferenceList>
            <conference>
                <conferenceId>1212</conferenceId>
                <conferenceTitle>quanshi 444</conferenceTitle>
                <smeAccount>https://www.jb51.net</smeAccount>
            </conference>
            <conference>
                <conferenceId>454</conferenceId>
                <conferenceTitle>quanshi meetting</conferenceTitle>
                <smeAccount>https://www.jb51.net</smeAccount>
            </conference>
            <conference>
                <conferenceId>6767</conferenceId>
                <conferenceTitle>quanshi meetting</conferenceTitle>
                <smeAccount>https://www.jb51.net</smeAccount>
            </conference>
            <conference>
                <conferenceId>232323</conferenceId>
                <conferenceTitle>quanshi uuu</conferenceTitle>
                <smeAccount>https://www.jb51.net</smeAccount>
            </conference>
            <conference>
                <conferenceId>8989</conferenceId>
                <conferenceTitle>quanshi meetting</conferenceTitle>
                <smeAccount>https://www.jb51.net</smeAccount>
            </conference>
            <conference>
                <conferenceId>1234343212</conferenceId>
                <conferenceTitle>quanshi meetting</conferenceTitle>
                <smeAccount>https://www.jb51.net</smeAccount>
            </conference>
        </conferenceList>
     */
    function array2xml($data,$tag = '')
    {
        $xml = '';

        foreach($data as $key => $value)
        {
            if(is_numeric($key))
            {
                if(is_array($value))
                {
                    $xml .= "<$tag>";
                    $xml .= array2xml($value);
                    $xml .="</$tag>";
                }
                else
                {
                    $xml .= "<$tag>$value</$tag>";
                }   
            }
            else
            {
                if(is_array($value))
                {
                    $keys = array_keys($value);
                    if(is_numeric($keys[0]))
                    {
                        $xml .=array2xml($value,$key);
                    }
                    else
                    {
                        $xml .= "<$key>";
                        $xml .=array2xml($value);
                        $xml .= "</$key>";
                    }

                }
                else
                {
                    $xml .= "<$key>$value</$key>";
                }
            }
        }
        return $xml;
    }            
}

xml2array

复制代码 代码如下: