Comparison between php serialization function and native serialization function

This article mainly introduces the comparison of the PHP serialization functions serialize() and unserialize() with the PHP native serialization functions. Friends in need can refer to it.

There is a good way in PHP to format strings and convert them into arrays or objects, that is, serialization.
There are two ways to serialize variables.

The following example uses the serialize() and unserialize() functions:

// a complex array
$myvar = array(
 'hello',
 42,
 array(1,'two'),
 'apple'
);

// convert to a string
$string = serialize($myvar);

echo $string;
/* prints
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";}
*/

// you can reproduce the original variable
$newvar = unserialize($string);

print_r($newvar);
/* prints
Array
(
  [0] => hello
  [1] => 42
  [2] => Array
    (
      [0] => 1
      [1] => two
    )

  [3] => apple
)
*/

This is the native PHP serialization method.

However, due to the popularity of JSON in recent years, support for the JSON format has been added to PHP5.2.

Now you can use the json_encode() and json_decode() functions:

// 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
)
*/

This will be more efficient and especially compatible with many other languages ​​such as JavaScript.

Note: For complex objects, some information may be lost.

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

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