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json_decode() - JSON to PHP Data Type Mapping
How data types are mapped from the JSON text string to the PHP variable when calling json_decode() function?
✍: FYIcenter.com
Data types are mapped from the JSON text string to the PHP variable
based on the following table, when calling json_decode() function:
JSON Data Type > PHP Data Type -------------- > ------------- null > null Boolean > Boolean Number > Int or Float String > String Array > Array Object > Object(stdClass) or Array
Here is a PHP example that shows you how json_decode() maps JSON data types to PHP data types:
<?php # json_decode_datatype.php # Copyright (c) FYIcenter.com $json = 'null'; print("\nInput: ".$json."\n"); var_dump(json_decode($json)); $json = 'true'; print("\nInput: ".$json."\n"); var_dump(json_decode($json)); $json = '20.20'; print("\nInput: ".$json."\n"); var_dump(json_decode($json)); $json = '2020'; print("\nInput: ".$json."\n"); var_dump(json_decode($json)); $json = '"2020"'; print("\nInput: ".$json."\n"); var_dump(json_decode($json)); $json = '["a","b","c"]'; print("\nInput: ".$json."\n"); var_dump(json_decode($json)); $json = '{"a":1,"b":2,"c":3}'; print("\nInput: ".$json."\n"); var_dump(json_decode($json)); ?>
If you run the above PHP code through the PHP engine, you get the following output:
>\fyicenter\php\php.exe json_decode_datatype.php Input: null NULL Input: true bool(true) Input: 20.20 float(20.2) Input: 2020 int(2020) Input: "2020" string(4) "2020" Input: ["a","b","c"] array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" } Input: {"a":1,"b":2,"c":3} object(stdClass)#1 (3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) }
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2023-02-28, 1065👍, 0💬
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