Question

Given a facebook URL with this format:

....&app_data=eid~423423|pid~23982938|admin~1

I want an array:

[ 'eid' => '423423', 'pid => '23982938', 'admin' => '1' ];

This is how I’m doing it:

$app_data = $signed_request['app_data'];
parse_str(str_replace('~','=',str_replace('|','&',$app_data)), $app_data_params);

Is there a better way to achieve this?

Answer 1

You can use preg_replace to eliminate the two calls to str_replace, but I doubt you’d see any performance benefit to doing so. There’s nothing wrong with the way you’re already doing it.

$str = 'eid~423423|pid~23982938|admin~1';
parse_str(
    preg_replace(
        array('/\~/','/\|/'), 
        array('=','&'), 
        $str
    ), 
    $app_data_params
);
print_r($app_data_params);
// Array ( [eid] => 423423 [pid] => 23982938 [admin] => 1 ) 

Documentation

• preg_replace – http://php.net/manual/en/function.preg-replace.php
• parse_str – http://php.net/manual/en/function.parse-str.php