How to convert php array to json

How to convert a php array into json: first create a PHP sample file; then define an array; finally, use the "json_encode($arr);" method to convert the array into json format data.

The operating environment of this tutorial: Windows 7 system, PHP version 5.6. This method is suitable for all brands of computers.

Recommended: "PHP Video Tutorial"

How to convert php array into json:

Convert PHP Convert the array to JSON format data

 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5);
   echo json_encode($arr);
?>

The execution result of the above code is:

{"a":1,"b":2,"c":3,"d":4,"e":5}

JSON function

Function	Description
json_encode	JSON encoding for variables
json_decode	JSON format Decode the string and convert it into a PHP variable
json_last_error	Return the last error that occurred

json_encode

PHP json_encode() is used to JSON encode variables. This function returns JSON data if executed successfully, otherwise it returns FALSE.

Syntax

string json_encode ( $value [, $options = 0 ] )

Parameters

• value: The value to be encoded. This function is only valid for UTF-8 encoded data.
• options: Binary mask composed of the following constants: JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT

The following example demonstrates Learn how to convert PHP objects into JSON format data:

name = "sachin";
   $e->hobbies  = "sports";
   $e->birthdate = date('m/d/Y h:i:s a', "8/5/1974 12:20:03 p");
   $e->birthdate = date('m/d/Y h:i:s a', strtotime("8/5/1974 12:20:03"));

   echo json_encode($e);
?>

The execution result of the above code is:

{"name":"sachin","hobbies":"sports","birthdate":"08\/05\/1974 12:20:03 pm"}

json_decode

PHP json_decode() function is used to decode characters in JSON format The string is decoded and converted into a PHP variable.

Syntax

mixed json_decode ($json_string [,$assoc = false [, $depth = 512 [, $options = 0 ]]])

Parameters

• json_string: The JSON string to be decoded must be UTF-8 encoded data

• assoc: When this parameter is TRUE, an array will be returned, and when FALSE, an object will be returned.

• depth: A parameter of type integer that specifies the recursion depth

• options: Binary Mask, currently only JSON_BIGINT_AS_STRING is supported.

Example

The following example demonstrates how to decode JSON data:

The execution result of the above code is:

object(stdClass)#1 (5) {
    ["a"] => int(1)
    ["b"] => int(2)
    ["c"] => int(3)
    ["d"] => int(4)
    ["e"] => int(5)
}

array(5) {
    ["a"] => int(1)
    ["b"] => int(2)
    ["c"] => int(3)
    ["d"] => int(4)
    ["e"] => int(5)
}

This method is applicable to all brands of computers.

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