How to convert php string to object

In PHP, you can convert a string into an object through the "json_decode" function. The syntax for using this function is "json_decode ( string $json [, bool $assoc = false [, int $depth..." .

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

Convert the string into a php object

• json_decode(): decoding - the string becomes an object in php

• json_encode(): encoding - php The object becomes a string

json_decode is a PHP built-in function added after php5.2.0. Its function is to encode strings in JSON format. Then How to use this function?

The syntax rules of json_decode:

　json_decode ( string $json [, bool $assoc = false [, int $depth = 512 [, int $options = 0 ]]] )

json_decode accepts a JSON format string and converts it into a PHP variable. When the parameter $assoc is TRUE, Array will be returned, otherwise object will be returned.

JSON format string

$json = '{"a":"php","b":"mysql","c":3}';

Where a is the key, php is the key value of a.

Example:

Program output:

stdClass Object (
　　[a] => php
　　[b] => mysql
　　[c] => 3 )
　　Array (
　　[a] => php
　　[b] => mysql
　　[c] => 3 )

Under the premise of the above code

Access the value of a of the object type $json_Class

echo $json_Class->{'a'};

Program output: php

Access the value of a in the array type $json_Array

echo $json_Array['a'];

Program output: php

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