Serialization in PHP

PHP Serialization functions are often used. when you need to store data in a database or file, you can use serialize () and unserialize () in PHP () method to implement serialization and deserialization. the code is as follows:

PHP Serialization functions are often used. when you need to store data in a database or file, you can use serialize () and unserialize () in PHP () method to achieve serialization and deserialization, the code is as follows:

Php code

1. // A complex array
2. $ Myvar = array (
3. 'Hello ',
4. 42,
5. Array (1, 'two '),
6. 'Apple'
7. );
8. // Serialization
9. $ String = serialize ($ myvar );
10. Echo $ string;
11. /* Output
12. A: 4: {I: 0; s: 5: "hello"; I: 1; I: 42; I: 2; a: 2: {I: 0; I: 1; I: 1; s: 3: "two";} I: 3; s: 5: "apple ";}
13. */
14. // Reverse sample
15. $ Newvar = unserialize ($ string );
16. Print_r ($ newvar );
17. /* Output
18. Array
19. (
20. [0] => hello
21. [1] => 42
22. [2] => Array
23. (
24. [0] => 1
25. [1] => two
26. )
27. [3] => apple
28. )
29. */

How to serialize data to json format? rest assured that php is ready for you. users who use php 5.2 or later can use the json_encode () and json_decode () functions to serialize data in json format, the code is as follows:

Php code
// A complex array
$ Myvar = array (
'Hello ',
42,
Array (1, 'two '),
'Apple'
);
// Convert to a string
$ String = json_encode ($ myvar );
Echo $ string;
/* Prints
["Hello", 42, [1, "two"], "apple"]
*/
// You can reproduce the original variable
$ Newvar = json_decode ($ string );
Print_r ($ newvar );
/* Prints
Array
(
[0] => hello
[1] => 42
[2] => Array
(
[0] => 1
[1] => two
)
[3] => apple
)
*/