Hello,
If you get this error when integrating PesaPal "Fatal error: Cannot redeclare class OAuthSignatureMethod_HMAC_SHA1" it's because the class OAuthSignatureMethod_HMAC_SHA1 has already been defined withing your system (probably by another 3rd party plugin).
To prevent this error from showing up, add a wrapper around the class that brings the error "cannot redeclare...." that check if the class has already been defined, ignoring it's declaration if so. Check the code below on how to do this:
if(!class_exists( $classname ) ) {
// include your class code
}
eg..
if(!class_exists("OAuthSignatureMethod_HMAC_SHA1") ) {
class OAuthSignatureMethod_HMAC_SHA1 extends OAuthSignatureMethod {
function get_name() {
return "HMAC-SHA1";
}
public function build_signature($request, $consumer, $token) {
$base_string = $request->get_signature_base_string();
$request->base_string = $base_string;
$key_parts = array(
$consumer->secret,
($token) ? $token->secret : ""
);
$key_parts = OAuthUtil::urlencode_rfc3986($key_parts);
$key = implode('&', $key_parts);
return base64_encode(hash_hmac('sha1', $base_string, $key, true));
}
}
}
