What is the function to convert php array to json?

The function for converting php array to json is json_encode(). The json_encode() function can JSON encode variables and convert them into json string data with the syntax format "json_encode (value)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

How to convert php array to json? You can use the json_encode() function.

Example:

<?php
$arr = array (&#39;a&#39;=>1,&#39;b&#39;=>2,&#39;c&#39;=>3,&#39;d&#39;=>4,&#39;e&#39;=>5);

echo json_encode($arr);
?>

Output:

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

PHP json_encode() function

json_encode() function can Variables are JSON encoded

Syntax:

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

Returns a string containing the representation of value in JSON form.

Note:

1. $value is the value to be encoded, and this function is only valid for UTF8 encoded data;

2. options: consists of the following constants Binary masks: JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT;

3. The second parameter is generally not needed;

4. JSON data is actually a string , you can use var_dump() to print it out to see the data type;

5. If the execution is successful, JSON data will be returned, otherwise FALSE will be returned.

Return value:

• Returns a JSON encoded string on success or false on failure.

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