Example explanation of serialize() and unserialize() functions

Today when I was looking at the class.quickskin.PHP code, I saw a function serialize that I had never seen before. Both Master and Xiaobai asked about it, but they couldn’t figure it out. As a result, I thought about testing it locally, and then The pig's head hit once. . . .
In fact, this kind of problem is very simple and can be solved by ourselves. Many times we are too lazy. . . .
It is often difficult to explain a program in language, especially for a novice like me. Many times it is easier to just look at the code.
The explanation in the PHP5 manual is as follows. It feels a bit confusing at first glance, but after reading it again after testing, it will become clearer.
Simply put, serialize($param) is to serialize the value of $param. It seems that some fields in the UCHOME database are stored in such data (a:1:{s:7:"apppath";s :0:"";}), and unserialize($param) is like the reverse operation of serialize, converting a serialized value into the corresponding string. This conversion is feasible for numeric variables and string variables, but for arrays and objects The examples output "Array" and "Catchable fatal error: Object of class Object could not be converted to string in" error messages respectively.

serialize() can handle all types except resource types, and can also serialize objects

<?php 
$array = array(); 
$array[&#39;keys&#39;] = &#39;www&#39;; 
$array[&#39;values&#39;]=&#39;11111&#39;; 
$a = serialize($array); 
echo $a; 
unset($array); 
$a = unserialize($a); 
print_r($a); 
?>

Output

a:2:{s:4:"keys" ;s:3:"www";s:6:"values";s:5:"11111";}

Array ( [keys] => www [values] => 11111 )

The same applies to classes

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