Transaction start was failed!API REQUESThttp://apipayment.gw.ekos.hu/sandbox/v2/start<pre>Array
(
    [salt] => be2af88d786733b5b8674c2917a5bbb7
    [merchant] => PUBLICTESTHUF
    [orderRef] => 17823820814417853706685446
    [currency] => HUF
    [sdkVersion] => SimplePay_PHP_SDK_2.1.5_250731:fb636c20e1499c145c24de61009e8e66
    [methods] => Array
        (
            [0] => CARD
            [1] => EAM
        )

    [total] => 25
    [threeDSReqAuthMethod] => 02
    [customerEmail] => sdk_test@simplepay.com
    [language] => HU
    [timeout] => 2026-07-30T00:27:48+00:00
    [url] => http://shop.gw.ekos.hu/back.php
    [invoice] => Array
        (
            [name] => SimplePay V2 Tester
            [country] => hu
            [state] => Budapest
            [city] => Budapest
            [zip] => 1111
            [address] => Address 1
        )

)
</pre>API RESULT<pre>Array
(
    [responseBody] => <br />
<font size='1'><table class='xdebug-error xe-uncaught-exception' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Fatal error: Uncaught TypeError: Cannot assign int to property SimpleResponse::$merchant of type string in /var/www/apipayment.gw.ekos.hu/public/simple_server.php on line <i>52</i></th></tr>
<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> TypeError: Cannot assign int to property SimpleResponse::$merchant of type string in /var/www/apipayment.gw.ekos.hu/public/simple_server.php on line <i>52</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0000</td><td bgcolor='#eeeeec' align='right'>357872</td><td bgcolor='#eeeeec'>{main}(  )</td><td title='/var/www/apipayment.gw.ekos.hu/public/index.php' bgcolor='#eeeeec'>.../index.php<b>:</b>0</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>2</td><td bgcolor='#eeeeec' align='center'>0.0006</td><td bgcolor='#eeeeec' align='right'>363760</td><td bgcolor='#eeeeec'>SimpleServer->replyError( <span>$merchant = </span><span>0</span>, <span>$error = </span><span>1</span> )</td><td title='/var/www/apipayment.gw.ekos.hu/public/index.php' bgcolor='#eeeeec'>.../index.php<b>:</b>29</td></tr>
</table></font>

    [responseSignature] => MISSING_HEADER_SIGNATURE
    [responseSignatureValid] => 
    [form] => Transaction start was failed!
)
</pre>