Converting php array with attributes to XML

Question

I'm working on an XML library, that can create / parse xml's from arrays/jsons. I managed to write the parser with xml_parser (and google help :p) cause SimpleXML wasn't good enough for what I'm doing.

I've managed to create an array that looks something like that:

Array 
(
[flow] => Array
    (
        [math] => Array
            (
                [apply] => Array
                    (
                        [lt] => Array
                            (
                            )

                        [apply] => Array
                            (
                                [divide] => Array
                                    (
                                    )

                                [apply] => Array
                                    (
                                        [minus] => Array
                                            (
                                            )
                                    )
                            )

                        [otherStuff] => 0
                    )

            )

        [true] => Array
            (


            )

        [true_attr] => Array
            (
                [xsi:type] => SomeStuff
                [id] => 2
            )

    )

[flow_attr] => Array
    (
        [id] => 0
        [xmlns:xsi] => http://www.w3.org/2001/XMLSchema-instance
    )
)

As you can see, it should look something like this ( not the best example :p ):

<flow id="0">
 <math>
 <lalaa/>
  <appyl>
 </apply>
  </math>
</flow>

Note that empty arrays should end with /> for example , and so on

As you can see I separated the node it self to node_attr that contains the attrs of the nodes. Like flow_attr, true_attr.

Anyone have an idea how to convert this array back to xml? I'm just lost and don't know what to do.

Thanks for the help!

This class is very useful for this kind of things: lalit.org/lab/convert-php-array-to-xml-with-attributes — S.Visser
– S.Visser, Commented Apr 18, 2013 at 14:44

kalehmann · Accepted Answer · 2019-08-30 17:44:01Z

3

function recurse2xml ($array, &$string = "") {
    foreach ($array as $key => $subArray) {
        if (substr($key, -5) == "_attr")
            continue;
        $attrs = "";
        if (isset($array["$key_attr"]))
            foreach ($array["$key_attr"] as $attr => $value)
                $attrs .= " $attr='".str_replace($value, "'", "\\'")."'";
        if (empty($subArray)) {
            $string .= "<$key$attrs />";
        } else {
            $string .= "<$key$attrs>";
            if (is_scalar($subArray))
                $string .= $subArray;
            else
                recurse2xml($subArray, $string);
            $string .= "</$key>";
        }
    }
    return $string;
}

This function called with recurse2xml($array); expands your array tree into an xml tree (string form).

edited Aug 30, 2019 at 17:44

kalehmann

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answered Apr 18, 2013 at 14:51

bwoebi

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6 Comments

Michael Arenzon Over a year ago

Thanks for the answer! It didn't worked, but I'll try to fork it and move on from this.

bwoebi Over a year ago

@MichaelArenzon It outputs what I expect it to... but what are you expecting?

Michael Arenzon Over a year ago

well there's a few syntax errors, and it doesn't support when there's a value, like in here: [otherStuff] => 0 so I'm getting something like: <otherStuff><0></0></otherStuff> and the attrs aren't showing from some strange reason :S but thanks yet

bwoebi Over a year ago

@MichaelArenzon Okay, but how should it handle scalars? As a value? like <otherStuff>0</otherStuff>? The attrs are showing up locally...

Michael Arenzon Over a year ago

yep, exactly. Btw you can check out the parser I found here: sourcecookbook.com/en/recipes/58/parse-xml-to-array-in-php I've changed it a bit but the logic still the same

|

pmayer · Accepted Answer · 2013-04-18 14:45:15Z

2

Try Array2XML, worked flawlesly for me. Including CDATA Parts, etc.

answered Apr 18, 2013 at 14:45

pmayer

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2 Comments

S.Visser Over a year ago

Try to place this kind of things in the comments.

jbrahy Over a year ago

The site is down so this is worthless now. Would have been good to have the source code for the function in your answer.

pbaasch · Accepted Answer · 2016-09-13 08:18:05Z

0

function recursiveArrayToXml($array, &$return=""){
    foreach ($array as $key => $subarray){
        if(empty($key)) {continue;}
        $key = preg_replace('/[^\da-z]/i', '', $key);
        if(preg_match('/[0-9]/i',$key[0])){
            $key = 'x'.$key;
        }
        $return .= "<".$key.">";
        if(!is_array($subarray)){
            $return .= htmlentities($subarray);
        }else{
            recursiveArrayToXml($subarray, $return);
        }
        $return .= "</".$key.">\n";
    }
    return $return;
}

This function will similar to the posted above fix problems in element names and element values. Called by recursiveArrayToXml($myArray);

answered Sep 13, 2016 at 8:18

pbaasch

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