How to Return JSON from PHP to JavaScript

Question

I have a PHP script that's being called through jQuery AJAX. I want the PHP script to return the data in JSON format to the javascript. Here's the pseudo code in the PHP script:

$json = "{";
foreach($result as $addr)
{
    foreach($addr as $line)
    {
        $json .= $line . "\n";
    }
    $json .= "\n\n";
}
$json .= "}";

Basically, I need the results of the two for loops to be inserted in $json. How to do that?

Answer 1

Hello @kartik,

Php has an inbuilt JSON Serialising function.

json_encode

Use that if you can and don't suffer not invented here syndrome.

json_encode

(PHP 5 >= 5.2.0, PHP 7, PECL json >= 1.2.0)

json_encode — Returns the JSON representation of a value

Description

json_encode ( mixed $value [, int $options = 0 [, int $depth = 512 ]] ) : string

Returns a string containing the JSON representation of the supplied value.

The encoding is affected by the supplied options and additionally the encoding of float values depends on the value of serialize_precision.

Hope it helps!!

Thank you!!