Michael C. Michael C. - 6 months ago 30
JSON Question

json_encode() escaping forward slashes

I'm pulling JSON from Instagram:

$instagrams = json_decode($response)->data;


Then parsing variables into a PHP array to restructure the data, then re-encoding and caching the file:

file_put_contents($cache,json_encode($results));


When I open the cache file all my forward slashes "/" are being escaped:

http:\/\/distilleryimage4.instagram.com\/410e7...


I gather from my searches that
json_encode()
automatically does this...is there a way to disable it?

Answer

is there a way to disable it?

Yes, you only need to use the JSON_UNESCAPED_SLASHES flag:

json_encode($str, JSON_UNESCAPED_SLASHES);

If you don't have PHP 5.4 at hand, pick one of the many existing functions and modify them to your needs, e.g. http://snippets.dzone.com/posts/show/7487 (archived copy).

Example Demo

<?php
/*
 * Escaping the reverse-solidus character ("/", slash) is optional in JSON.
 *
 * This can be controlled with the JSON_UNESCAPED_SLASHES flag constant in PHP.
 *
 * @link http://stackoverflow.com/a/10210433/367456
 */    

$url = 'http://www.example.com/';

echo json_encode($url), "\n";

echo json_encode($url, JSON_UNESCAPED_SLASHES), "\n";

Example Output:

"http:\/\/www.example.com\/"
"http://www.example.com/"
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