PHP array conversion to JSON string program code _php Tutorial

Data Conversion JS Format data is a common method of data transfer, especially as Ajax will often use to convert the data into JSON and then converted back, see an example below.

The code is as follows

Copy Code

function Array_to_json ($array) { if (! Is_array ($array)) { return false; } $associative = Count (Array_diff (Array_keys ($array), Array_keys (Array_keys ($array))); if ($associative) { $construct = Array (); foreach ($array as $key = = $value) { We first copy each key/value pair into a staging array, Formatting each key and value properly as we go. //Format the key: if (Is_numeric ($key)) { $key = "Key_$key"; } $key = "". Addslashes ($key). """; //Format The value: if (Is_array ($value)) { $value = Array_to_json ($value); } else if (! is_n Umeric ($value) | | Is_string ($value)) { $value = "". Addslashes ($value). """; } //ADD to staging array: $construct [] = "$key: $value"; } //Then we collapse the staging array into the JSON form: $result = "{". Implode (",", $construct). "}"; } else {//If the array is a vector (not associative): $construct = Array (); foreach ($array as $value) { Format The value: if (Is_array ($value)) { $value = Array_to_json ($value); } else if (! Is_numeric ($value) | | is_string ($value)) { $value = "". Addslashes ($value). """; } Add to Staging array: $construct [] = $value; } Then we collapse the staging array into the JSON form: $result = "[". Implode (",", $construct). "]"; } return $result; }

You can try this, and json_encode change to the above function to see if it's normal?

The code is as follows	Copy Code
if ($_get[' enews ']== ' OK ') { echo json_encode (Array (' a ' = ' Wangjin '); exit; } ?>

About PHP in Json_encode

Json_encode () converts different types of PHP variables to the corresponding JSON string, string Json_encode (mixed $value [, int

$options = 0])

PHP 5.3.0

Json_hex_quot: Converts all double quotation marks (") to u0022.
Instance code:

The code is as follows	Copy Code
$data = ' "'; echo Json_encode ($data); // """ Echo Json_encode ($data, Json_hex_quot);

"u0022" Json_hex_tag: Converts all greater than (>) to u003e,

All of the less than (<) is converted to u003c.
Json_hex_amp: Converts all the numbers (&) to u0026.
Json_hex_apos: Converts all single quotation marks (') to u0027.
Json_force_object: Forces the output to be a JSON object when value is a non-associative array. When the recipient requires the data to be an object and value is an empty array

Use.

Instance code:

The code is as follows	Copy Code
$data = Array (); echo Json_encode ($data); // [] Echo Json_encode ($data, json_force_object); // {}

PHP 5.3.3

Json_numeric_check:encodes NUMERIC strings as numbers.

PHP 5.4.0

Json_bigint_as_string:encodes large integers as their original STRING value. Available since PHP
5.4.0.

Json_pretty_print:use whitespace in returned data to format it. Available since PHP 5.4.0.
Json_unescaped_slashes:don ' t escape/. Available since PHP 5.4.0.
Json_unescaped_unicode:encode multibyte UNICODE characters literally (default is to escape as uxxxx).

Available since PHP 5.4.0.

http://www.bkjia.com/PHPjc/445290.html www.bkjia.com true http://www.bkjia.com/PHPjc/445290.html techarticle Data Conversion JS Format data is a common method of data transfer, especially as Ajax will often use to convert the data into JSON and then converted back, see an example below. Code such as ...

