enable cors in .htaccess

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Since I had everything being forwarded to index.php anyway I thought I would try setting the headers in PHP instead of the .htaccess file and it worked! YAY! Here’s what I added to index.php for anyone else having this problem.

// Allow from any origin
if (isset($_SERVER['HTTP_ORIGIN'])) {
    // should do a check here to match $_SERVER['HTTP_ORIGIN'] to a
    // whitelist of safe domains
    header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}");
    header('Access-Control-Allow-Credentials: true');
    header('Access-Control-Max-Age: 86400');    // cache for 1 day
}
// Access-Control headers are received during OPTIONS requests
if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {

    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']))
        header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");         

    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']))
        header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");

}

credit goes to slashingweapon for his answer on this question

Because I’m using Slim I added this route so that OPTIONS requests get a HTTP 200 response

// return HTTP 200 for HTTP OPTIONS requests
$app->map('/:x+', function($x) {
    http_response_code(200);
})->via('OPTIONS');

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