How to convert array in php xml

In PHP development, XML format is a common data exchange format, and converting XML format data into array format is a problem we often need to face. So, in this article, I will share a method of converting XML into an array using PHP, so that everyone can process XML data more conveniently.

First of all, we need to understand the structure of XML data. Generally speaking, XML data consists of tags, attributes and text, where tags and attributes are wrapped with < >.

The following is a simple XML data example:

<?xml version="1.0" encoding="UTF-8"?>
<bookstore>
  <book category="children">
    <title lang="en">Harry Potter</title>
    <author>J.K. Rowling</author>
    <year>2005</year>
    <price>29.99</price>
  </book>
  <book category="web">
    <title lang="en">PHP XML</title>
    <author>John Doe</author>
    <year>2010</year>
    <price>59.99</price>
  </book>
</bookstore>

We need to convert the above XML data into a PHP array in order to use the data in the program. To achieve this, we can use the SimpleXMLElement class built into the PHP language.

First, we need to use the SimpleXMLElement::load_file() method to load the XML file. If the XML data is a string, it can be loaded using the SimpleXMLElement::xml_load_string() method.

Next, we need to convert the SimpleXMLElement object into an array so that we can use it in the program. You can call the asXML() method of the SimpleXMLElement class to convert it to an XML string, and then use the PHP function simplexml_load_string() to convert it to an array.

The following is a code example for converting XML to an array:

$xml_file = 'books.xml';

$xml = simplexml_load_file($xml_file);

$json = json_encode($xml);
$array = json_decode($json, true);

print_r($array);

In the above code, we first use the simplexml_load_file() method to load the XML file and obtain a SimpleXMLElement object. Next, we use the json_encode() function to convert the SimpleXMLElement object into a JSON format string. Finally, we use the json_decode() function to convert the JSON format string into a PHP array.

Finally, the array data obtained by XML conversion is stored in the $array variable. We can use the print_r() function to output this data to see if the conversion result is correct.

It should be noted that when converting XML data into an array, the names of some tags and attributes may have special characters, such as spaces, underscores, etc. At this time, you need to pay attention to the processing of special characters to avoid occurrences. abnormal situation.

In actual work, we often need to use XML format data, and converting XML data into an array is a very convenient operation, which can make data manipulation more convenient. Through the introduction of this article, I believe that everyone has a deeper understanding of the method of converting XML into arrays in PHP, and can better apply it to actual development.

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