MAKING AN API REQUEST CALL USING PHP, CURL AND A CLIENT SIDE SSL CERTIFICATE

We need someone to review our source codes in order to be able to send a client side SSL certificate in PHP code using curl. We have PHP codes that use curl and RestTemplate to send parameters to an endpoint provided by a partner. In order to successfully connect with the endpoint, our partner has provided us with server SSL certificate that we should use while making the API calls to the endpoint. Below is the source code in php-curl: PHP CURL $base_url = 'xxxx'; $username = 'xxx'; $password = 'xxxxx’; $xml_input = "<ns2:paymentRequest xmlns:ns2=\"xxxxx">\n<ns2:rraRef>$variable</ns2:rraRef>\n<ns2:amount>$variable</ns2:amount>\n <ns2:bankAccount>$variable</ns2:bankAccount>\n<ns2:providerTransactionId>$variable</ns2:providerTransactionId>\n</ns2:paymentRequest>"; // Request headers $headers = array( 'Content-Type: application/xml' ); $ch = curl_init($base_url); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_VERBOSE, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); curl_setopt($ch, CURLOPT_HEADER, FALSE); curl_setopt($ch, CURLOPT_USERPWD, $username . ":" . $password); curl_setopt($ch, CURLOPT_POSTFIELDS, $xml_input); $result = curl_exec($ch); The SSL certificate is in .crt format. If you need a different format other than .crt, you may advise us so that we get you the file from our partners. Note that the API request must be done from a specific server whose IP address has been whitelisted by our partner. We shall provide you with the access to this server for testing purposes. Consider that the source codes must be in PHP and Java spring We expect this task to be completed in 48 hours.