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    <p>Because your input data is nicely formatted you can create a very simple recursive descendant parser - even not that much recursion involved. Or just with a simple stack:</p> <pre><code>$props = array_filter(array_map('trim', explode("\n", $prop))); $stack = [$node = $xml = new SimpleXMLElement('&lt;root/&gt;')]; foreach ($props as $str) { if ($str === '}') { array_pop($stack); $node = end($stack); continue; } if (preg_match('~^(\w+) {$~', $str, $matches)) { $node = $stack[] = $node-&gt;addChild($matches[1]); continue; } if (preg_match('~^(\w+):\s*(.*)$~', $str, $matches)) { $node-&gt;addChild($matches[1], htmlspecialchars($matches[2])); continue; } throw new UnexpectedValueException(sprintf('Unable to parse: "%s"', $str)); } $xml-&gt;asXML('php://output'); </code></pre> <p>The output for your second example (previously missing) then is (beautified):</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;root&gt; &lt;button&gt; &lt;large&gt; &lt;bond&gt; &lt;width&gt;10px;&lt;/width&gt; &lt;height&gt;10px;&lt;/height&gt; &lt;/bond&gt; &lt;style&gt; &lt;background&gt; &lt;color&gt;#ffffff;&lt;/color&gt; &lt;image&gt;url(www.px.com/aui.png) -10px;&lt;/image&gt; &lt;another&gt; &lt;width&gt;100px;&lt;/width&gt; &lt;height&gt;100px;&lt;/height&gt; &lt;/another&gt; &lt;/background&gt; &lt;/style&gt; &lt;/large&gt; &lt;small&gt; &lt;bond&gt; &lt;width&gt;10px;&lt;/width&gt; &lt;height&gt;10px;&lt;/height&gt; &lt;/bond&gt; &lt;style&gt; &lt;color&gt;#fff;&lt;/color&gt; &lt;border&gt;1px solid #000;&lt;/border&gt; &lt;/style&gt; &lt;/small&gt; &lt;/button&gt; &lt;/root&gt; </code></pre> <p>I recommend you use XML here because it can represent the structure better than an array which can not have duplicate keys.</p> <p>It would be also possible to use recursive function calls instead of the stack. But this requires to wrap the input stream in a no-rewind iterator to not break (or using <code>array_shift</code> but I do not like that much):</p> <pre><code>$parse = function($p, SimpleXMLElement $t) use (&amp;$parse) { foreach($p as $s) { if ($s === '}') { break; } if (preg_match('~^([^ ]+) {$~', $s, $m)) { $p-&gt;next(); $parse($p, $t-&gt;addChild($m[1])); continue; } if (preg_match('~^([^:]+):\s*(.*)$~', $s, $m)) { $n = $t-&gt;addChild($m[1], htmlspecialchars($m[2])); continue; } } }; $props = array_filter(array_map('trim', explode("\n", $prop))); $xml = new SimpleXMLElement('&lt;root/&gt;'); $parse(new NoRewindIterator(new ArrayIterator($props)), $xml); $xml-&gt;asXML('php://output'); </code></pre>
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    1. POConvert JSON/CSS-like Formated String to XML in PHP
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    1. COThank you so much @hakre, this is what I'm looking for. :)
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      1. USNanang El Sutra
 

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