Is unserializing untrusted data dangerous?

In PHP it can be, because objects are instantiated. This tool only parses the text into plain values, so it is safe to inspect unknown data here.

Which PHP array features are supported?

Short [] and array() syntax with strings, numbers, booleans, null and nested arrays. Variables, constants and function calls are not evaluated.

Is my data sent to a server?

No. Everything is processed in your browser, which matters when the input is a production payload, token or query. Nothing is uploaded, logged or stored.

JSON and PHP Array Converter - Free Online Tool

JavaScript is turned off. InspireTools processes files in your browser, so the tools need JavaScript to run.

Convert between JSON, PHP array syntax and PHP serialize() format.