- #Foreach php json decode mysql update
- #Foreach php json decode mysql full
(Not actual error exceptions but cases where your object doesn't match your Database Schema) My experience is that because the Storage layer for the ORM expects the storage data to be dynamic and therefore holds no preconceptions about its format, it can be better equipped to deal with the exceptions to the norm. It's an in memory cache system to store key value pairs. Using HTTP Session VS serialized JSON array to store an SQL result
And in such cases the data blob is seldomly accessed or queried within the database. It's only a requirement if you need to store complex or nested array structures. However, true, the serialized data is unneeded in your example. Also there is really only limited list support anyway. While it's easier to query or even modify within the database, it makes more effort for unmarshalling from/to the database API. This is workable for storing confined string lists. Serializing data allows to store quasi binary data. But it's clearly done for implementation ease. I'd stay away from XML unless you really need interoperability with a third party/ what's the point of serializing arrays to store them in the db? JSON would be fine but we found it a little slower to marshal / un-marshal. JSON or XML or serialized array to save in MySQL databaseįor performance reasons, we store large hashes as serialized Ruby objects in Marshal format.
#Foreach php json decode mysql update
You won't be able to do much queries on serialized strins, in a DB : you will not be able to use your data in where clauses, nor update it without the intervention of PHP. Are you sure this is the best way to store data in a database ?. Even if there is a small difference in speed between those two, it shouldn't matter much : you will probably not serialize/unserialize a lot of data. On the other hand, as JSON is not specific to PHP, it's not aware of the stuff that's specific to PHP - like data-types. Main advantage of json_encode : JSON is not specific to PHP : there are libraries to read/write it in several languages - which means it's better if you want something that can be manipulated with another language than PHP.Ī JSON string is also easier to read/write/modify by hand than a serialized one. Main advantage of serialize : it's specific to PHP, which means it can represent PHP types, including instances of your own classes - and you'll get your objects back, still instances of your classes, when unserializing your data. This should handle your use case using a built in method. You can even use a neater version called store: class Comment < ActiveRecord::BaseĬomment.stuff << 'some' << 'stuff' << 'as array' You also won't have to create the array when you assign the first value, since you'll be able to append to the existing (empty) array. You can specify the class name that the object type should equal to (in this case Array). (in PHP>=5.4 you can implement JsonSerializable to change this behavior).Īnd there's probably a few other differences I can't think of at the moment.Ī simple speed test to compare the two By default, only public properties are serialized with JSON. You can't leverage _sleep() and _wakeup() with JSON. JSON will have no memory of what the object's original class was (they are always restored as instances of stdClass). Unlike serialize() you need to add extra parameter to keep UTF-8 characters untouched: json_encode($array, JSON_UNESCAPED_UNICODE) (otherwise it converts UTF-8 characters to Unicode escape sequences). #Foreach php json decode mysql full
Just make sure you have a full understanding of the differences before you make a choice
If performance is your absolute driving characteristic, then by all means use the fastest one. Preferred method to store PHP arrays (json_encode vs serialize) It has been noted that it is some times best the base64 encode strings put into the database, and base64 decode strings taken out of the database with this function, as there are some issues with the handling of some white space characters._wakeup() magic method called on any object being unserialize.Methods are not lost on PHP Datatype Object.Small footprint vs PHP's serialize'd string.
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