json2xml converts JSON input into XML. It supports uploaded JSON files, pasted JSON, and NDJSON (newline-delimited JSON). The converter provides configurable conventions for mapping JSON keys to XML attributes and text nodes, and it can pretty-print the result or provide a downloadable .xml file.

• Accepts file upload or pasted JSON/NDJSON.
• Handles JSON objects and arrays (top-level arrays become repeated child elements under the root).
• Attribute convention: keys prefixed with a configurable string (default @) become XML attributes.
• Text node convention: a configurable key (default #text) maps to a node's text content.
• Configurable item element name for array elements (default item).
• Preview and download as .xml.

• Root element name: the XML root element name (default root).
• Attribute prefix: keys starting with this prefix are interpreted as attributes (default @).
• Text key: if an object contains this key, its value becomes the element text content (default #text).
• Item element: when arrays are encountered, elements are wrapped in the named tag for repeated entries (default item).
• Pretty-print: enable formatted XML output.

• Objects map to elements with child elements for each key.
• Numeric arrays produce repeated elements with the configured item element name.
• Keys that start with the attribute prefix become attributes on the element (the attribute name is the remainder of the key).
• The text key sets the element's text content instead of creating a child element.

Input JSON:

{
  "person": {
    "@id": 123,
    "name": "Alice",
    "phones": ["123","456"]
  }
}

Default XML output (with root root):

<root>
  <person id="123">
    <name>Alice</name>
    <phones>
      <item>123</item>
      <item>456</item>
    </phones>
  </person>
</root>

• This converter uses a deterministic rule set and is not schema-aware. For advanced XML needs (namespaces, attributes with specific types, mixed content), post-processing or a schema-driven approach may be necessary.

1. Start a local PHP server in the json2xml folder for testing:

cd 'C:\Users\Administrator\Documents\GitHub\proishs-webtools\converters\json2xml'
php -S 127.0.0.1:8000 -t .

2. Open http://127.0.0.1:8000/index.php, paste JSON or upload a .json file, adjust options, then Preview or Download.

1. Convert simple objects, arrays, nested structures.
2. Validate attribute prefix handling (e.g., {"@id":1} -> id="1").
3. Convert NDJSON input (multiple JSON objects separated by newlines) and verify repeated child elements.
4. Toggle pretty-print to verify formatted output.

• The tool can be invoked programmatically by POSTing a file or the jsontext form field and reading the response (as preview or downloaded file).

• 2025-11-07: Initial implementation: index.php converter and this README.

This README documents the conversion conventions, options and examples for the json2xml converter.