- serialize representation can be stored in text and reversed
- JSON representation can be stored in text but cannot always be precisely reversed
Run this example:
$query = new WP_Query();
var_dump( $query );
var_dump( unserialize( serialize( $query ) ) );
var_dump( json_decode( json_encode( $query ) ) );
- After going through serialize accurate
WP_Query
object is re-created. - After going through JSON you get
stdClass
object.
In a nutshell serialize is native part of PHP and has a lot of synergy with manipulating data in it. JSON is language-agnostic format that is convenient for systems talking to each other, but far from comprehensive and cannot do things in PHP which serialize does without second thought.
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