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Internal/package-xml/Parser.php

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+<?php namespace ZN\XML;
+/**
+ * ZN PHP Web Framework
+ * 
+ * "Simplicity is the ultimate sophistication." ~ Da Vinci
+ * 
+ * @package ZN
+ * @license MIT [http://opensource.org/licenses/MIT]
+ * @author  Ozan UYKUN [ozan@znframework.com]
+ */
+
+use stdClass;
+use SimpleXMLElement;
+
+class Parser
+{
+    /**
+     * Parses an XML document.
+     * 
+     * @param string $xml 
+     * @param string $result = 'object'
+     * 
+     * @return mixed
+     */
+    public static function do(string $xml, string $result = 'object')
+    {
+        $xml    = self::cleanXMLElement($xml);
+        $parser = xml_parser_create();
+
+        xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
+        xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
+        xml_parse_into_struct($parser, $xml, $tags);
+        xml_parser_free($parser);
+
+        $elements = [];
+        $stack    = [];
+
+        if( ! empty($tags) ) foreach( $tags as $tag )
+        {
+
+            $index = count($elements);
+
+            if( $tag['type'] === 'complete' || $tag['type'] === 'open' )
+            {
+                if( $result === 'object' )
+                {
+                    $elements[$index]          = new stdClass;
+                    $elements[$index]->name    = $tag['tag']        ?? NULL;
+                    $elements[$index]->content = $tag['value']      ?? NULL;
+                    $elements[$index]->attr    = $tag['attributes'] ?? NULL;
+
+                    if( $tag['type'] === 'open' )
+                    {
+                        $elements[$index]->child = [];
+                        $stack[count($stack)]    = &$elements;
+                        $elements                = &$elements[$index]->child;
+                    }
+                }
+                else
+                {
+                    $elements[$index]            = [];
+                    $elements[$index]['name']    = $tag['tag']        ?? NULL;
+                    $elements[$index]['content'] = $tag['value']      ?? NULL;
+                    $elements[$index]['attr']    = $tag['attributes'] ?? NULL;
+
+                    if( $tag['type'] === 'open' )
+                    {
+                        $elements[$index]['child'] = [];
+                        $stack[count($stack)]      = &$elements;
+                        $elements                  = &$elements[$index]['child'];
+                    }
+                }
+            }
+
+            if( $tag['type'] === 'close' )
+            {
+                $elements = &$stack[count($stack) - 1];
+                unset($stack[count($stack) - 1]);
+            }
+        }
+
+        return $elements[0] ?? [];
+    }
+
+    /**
+     * Parses an XML document.
+     * 
+     * @param string $xml 
+     * 
+     * @return array
+     */
+    public static function array(string $data) : array
+    {
+        return self::do($data, 'array');
+    }
+
+    /**
+     * Parses an XML document.
+     * 
+     * @param string $xml 
+     * 
+     * @return string
+     */
+    public static function json(string $data) : string
+    {
+        return json_encode(self::do($data, 'array'));
+    }
+
+    /**
+     * Parses an XML document.
+     * 
+     * @param string $xml 
+     * 
+     * @return object
+     */
+    public static function object(string $data)
+    {
+        return self::do($data, 'object');
+    }
+
+    /**
+     * Simple XML Element
+     * 
+     * @param string $data
+     * @param int    $option = 0
+     * 
+     * @return SimpleXMLElement
+     */
+    public static function simple(string $data, int $option = 0)
+    {
+        $data = self::cleanXMLElement($data);
+
+        return new SimpleXMLElement($data, $option);
+    }
+
+    /**
+     * Simple URL XML Element
+     * 
+     * @param string $data
+     * @param int    $option = 0
+     * 
+     * @return SimpleXMLElement
+     */
+    public static function simpleURL(string $data, int $option = 0)
+    {
+        return new SimpleXMLElement($data, $option, true);
+    }
+
+    /**
+     * Private clean XML element
+     */
+    private static function cleanXMLElement($xml)
+    {
+        return preg_replace('/<\?xml(.*?)>/', '', $xml ?? '');
+    }
+}