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Example code of rodnaph/edhen

Informations about the package edhen

Encode/Decode EDN in PHP

A tool to encode/decode between EDN and PHP data structures.

Note

When converting from EDN to PHP the conversion is lossy as the richness of datatypes supported by EDN is not available in PHP. So a conversion from EDN to PHP and back to EDN would not lose you data, but it would lose type information.

Usage

The interface is via some static functions on the Edhen class. To decode an EDN element...

If you have EDN with multiple elements, you can use decodeAll

Then for encoding use the encode function, passing it the data to encode...

Data Type Translations

When decoding EDN to PHP...

EDN PHP
nil null
true true
false false
strings string
characters string
symbols string
keywords string
integer integer
floating-point double
lists array
vectors array
maps array
sets array

Builtin Tags

EDN PHP
inst DateTime
uuid string

When encoding PHP to EDN...

PHP EDN
null nil
boolean boolean
integer integer
double float
array vector
array (assoc) hashmap
object hashmap
resource nil
callable nil

The decision on if an array is to be converted to a vector or hashmap is done by checking its keys. If any of the keys are non-numeric then a hashmap is used.

EDN is generated as a single string, no pretty-printing is currently supported. Another tool should be used for this.

Custom Tag Handlers

To implement your own tag handlers, create a class which implements the Edhen\TagHandler interface and pass it in an array as the second argument to decode/decodeAll

You can see an example in the tests.

Installation

Edhen can be installed via Composer.

All versions of edhen with dependencies

PHP Build Version
Package Version
Requires php Version >=5.3.3
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