What is the function to convert php array to xml?-PHP Problem-php.cn

What is the function to convert php array to xml?

藏色散人

Release： 2023-03-05 08:50:01

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The function for converting php array to xml is "arr2xml". How to use it: first create a php sample file; then define an "arr2xml" method; then use the foreach statement and "preg_replace" and other functions to convert the array into xml is enough.

What is the function to convert php array to xml?

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The need to convert PHP winning arrays to xml is common, and There are many implementation methods. Baidu searched for various implementation methods, but basically they just borrowed some components and so on. I wrote a string grouping method myself, which supports multi-dimensional arrays. For reference only, please feel free to let us know if there are any deficiencies!

/**
*   将数组转换为xml
*    @param array $data    要转换的数组
*   @param bool $root     是否要根节点
*   @return string         xml字符串
*    @author Dragondean
*    @url    http://www.cnblogs.com/dragondean*/function arr2xml($data, $root = true){    $str="";    if($root)$str .= "<xml>";    foreach($data as $key => $val){        if(is_array($val)){            $child = arr2xml($val, false);            $str .= "<$key>$child</$key>";
        }else{            $str.= "<$key><![CDATA[$val]]></$key>";
        }
    }    if($root)$str .= "</xml>";    return $str;
}

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The above is the implementation method. The first parameter is the array you want to convert. The second optional parameter sets whether you need to add the root node. It is required by default.

Test code:

$arr=array(&#39;a&#39;=>&#39;aaa&#39;,&#39;b&#39;=>array(&#39;c&#39;=>&#39;1234&#39; , &#39;d&#39; => "asdfasdf"));echo arr2xml($arr);

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The result after the code is executed is:

<xml><a><![CDATA[aaa]]></a><b><c><![CDATA[1234]]></c><d><![CDATA[asdfasdf]]></d></b></xml>

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-------------------------- -- ----------

Update:

During the use process, it was found that there will be problems with the array conversion in the following format:

array(    &#39;item&#39; => array(        array(            &#39;title&#39; => &#39;qwe&#39;,
            &#39;description&#39; => &#39;rtrt&#39;,
            &#39;picurl&#39; => &#39;sdfsd&#39;,
            &#39;url&#39; => &#39;ghjghj&#39;
        ),        array(            &#39;title&#39; => &#39;jyutyu&#39;,
            &#39;description&#39; => &#39;werwe&#39;,
            &#39;picurl&#39; => &#39;xcvxv&#39;,
            &#39;url&#39; => &#39;ghjgh&#39;
        )
    )
);

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Converted The result is:

<xml>
    <item>
        <0>
            <title>
                <![CDATA[qwe]]>
            </title>
            <description>
                <![CDATA[rtrt]]>
            </description>
            <picurl>
                <![CDATA[sdfsd]]>
            </picurl>
            <url>
                <![CDATA[ghjghj]]>
            </url>
        </0>
        <1>
            <title>
                <![CDATA[jyutyu]]>
            </title>
            <description>
                <![CDATA[werwe]]>
            </description>
            <picurl>
                <![CDATA[xcvxv]]>
            </picurl>
            <url>
                <![CDATA[ghjgh]]>
            </url>
        </1>
    </item></xml>

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Normally, we don’t want the whole layer of nodes in the xml converted above: <0><1>. However, in php, the subscript cannot have the same name and cannot have multiple items. How to do it?

I thought of a way to subscript items, such as item[0], item[1], and remove the subscripts in the form of [] during the conversion process to achieve multiple item nodes side by side.

The modified function is as follows:

function arr2xml($data, $root = true){    $str="";    if($root)$str .= "<xml>";    foreach($data as $key => $val){        //去掉key中的下标[]
        $key = preg_replace(&#39;/\[\d*\]/&#39;, &#39;&#39;, $key);        if(is_array($val)){            $child = arr2xml($val, false);            $str .= "<$key>$child</$key>";
        }else{            $str.= "<$key><![CDATA[$val]]></$key>";
        }
    }    if($root)$str .= "</xml>";    return $str;
}

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Then the array that needs to be converted above also needs to be changed:

$arr1 =array(    &#39;item[0]&#39; => array(            &#39;title&#39; => &#39;qwe&#39;,
            &#39;description&#39; => &#39;rtrt&#39;,
            &#39;picurl&#39; => &#39;sdfsd&#39;,
            &#39;url&#39; => &#39;ghjghj&#39;
        ),
    &#39;item[1]&#39; => array(            &#39;title&#39; => &#39;jyutyu&#39;,
            &#39;description&#39; => &#39;werwe&#39;,
            &#39;picurl&#39; => &#39;xcvxv&#39;,
            &#39;url&#39; => &#39;ghjgh&#39;
        )
);

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The converted xml is as follows:

<xml>
    <item>
        <title>
            <![CDATA[qwe]]>
        </title>
        <description>
            <![CDATA[rtrt]]>
        </description>
        <picurl>
            <![CDATA[sdfsd]]>
        </picurl>
        <url>
            <![CDATA[ghjghj]]>
        </url>
    </item>
    <item>
        <title>
            <![CDATA[jyutyu]]>
        </title>
        <description>
            <![CDATA[werwe]]>
        </description>
        <picurl>
            <![CDATA[xcvxv]]>
        </picurl>
        <url>
            <![CDATA[ghjgh]]>
        </url>
    </item></xml>

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