get_linetype.php

<?php

function get_linetype( $phone_number ) {

   // Your Signalwire project id
   $project_id = '';

   // Your signalwire API Auth Token
   $auth_token = '';

   // Your signalwire Space URL
   $space_url = '';



    $ch = curl_init();

    curl_setopt( $ch, CURLOPT_URL, "https://$space_url/api/relay/rest/lookup/phone_number/$phone_number?include=carrier" );
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
    curl_setopt( $ch, CURLOPT_USERPWD, "$project_id" . ':' . "$auth_token" );

    $get_response = curl_exec( $ch );
    if ( curl_errno( $ch ) ) {
        echo 'Error:' . curl_error( $ch );
    }

    $phone_number_carrier_data = json_decode( $get_response, true );
    $phone_number_carrier_data = $phone_number_carrier_data['carrier']; // now you have all info about the number
    // you can get the number type like so
    return $phone_number_carrier_data['linetype'];
}

// use function

$linetype = get_linetype( '+1xxxxxxxxxx'); // this function returns an array



echo $linetype;