Send files in CURL from string

Hello! I have idea to make possible to send files with CURL from string. CURL library has few options to make it as easy as possible: CURLFORM_BUFFER, CURLFORM_BUFFERPTR, and CURLFORM_BUFFERLENGTH. But I got many problems with integration of this feature in current php curl file attachment design. Class CURLFile has one required $filename property, and two optional properties $mimetype and $postname. In my case we need two required properties $buffer and $postname, and one optional $mimetype. Also we have function curl_file_create, which just like alias function for CURLFile constructor with same arguments. So I tried to implement feature by different ways: 1) Create new class CURLFileBuffer by simple copy-paste code from CURLFile. (pull-request https://github.com/php/php-src/pull/1217 - code was removed, sorry) positive: - No BC break - API similar to CURLFile negative: - A lot of code duplication, hard to support in future. Thanks to Tony2001 and S.Malyshev for reviewing. 2) Integrate new feature to exists CURLFile class. (pull-request https://github.com/php/php-src/pull/1283) positive: - One class for new and old features - No code duplication - No BC break (* except some little not obviously cases) negative: - Not clear behavior if developer will set $filename and $buffer in same time. It require more documentation and not obviously for developers. - Not clear which values of $filename we must ignore to start use $buffer. - etc. Thanks to S.Malyshev for reviewing. 3) Like #2, but make CURLFile immutable after instance creation by curl_file_create and curl_file_buffer_create functions (or by little modified constructors). positive: - Clear behavior. negative: - Great BC break: CURLFile has public properties and setters methods. I like it, I think it will be great to make CURLFile immutable, but I'm sure no one want such BC. =( 4) Like #1, but move code duplication to common C code, used by two classes. It's impossible, because this classes so simple, so 95% of code like that:

/* {{{ proto string CURLFile::getFilename() Get file name */ ZEND_METHOD(CURLFile, getFilename) { curlfile_get_property("name", INTERNAL_FUNCTION_PARAM_PASSTHRU); } /* }}} */ So both classes required such doc block ({{{ proto ...) and call *_property methods. 5) Like #1, but move code duplication to abstract class, for example CURLFileAbstract. So we move $mimetype and $postname to abstract class, $filename to CURLFile, $buffer to CURLFileBuffer class. They will have own constructors with own arguments requiring. positive: - No BC break - less code duplication negative: - new abstract class, used ONLY for less code duplication in curl extension, it has no sense for developers. 6+) Your variant, please provide it. As you can see, so little change, like using few simple options from curl library, require so long mail, few pull-requests and too many time from internal php people. But I believe, we can do it. Thank you, and please help me to finish this small feature.