I have completed a first draft of serialization functionality which is
intended to be an updated to amfext. It's on github[0] if anyone is
interested. I would now like to write all the unserialization routines and
would like some suggestions from experienced php devs. I've been reading
Sara Golemon's book, but am still a little unsure.

In particular, I want my userland function, amf_decode to accept as a
parameter a string (and possibly other args). This is not so difficult but
I must call upon another function, php_amf_decode, which needs to be able
to handle recursive calls.

Something like this:

// userland function
static PHP_FUNCTION(amf_decode) {
    char *buf; // char buffer, contains serialize data string
    int buf_len, buf_cursor=0; // the length of the buffer
    long flags = 0;

    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|l", &buf,
&buf_len, &flags) == FAILURE) {
        return;
    }

    if (!buf_len) {
        RETURN_NULL();
    }

    php_amf_decode(return_value, buf, buf_len, &buf_cursor, flags
TSRMLS_CC);
}

// proposed recursive decoding function
PHP_AMF_API void php_amf_decode(zval *return_value, char *buf, int buf_len,
int *buf_cursor, long flags TSRMLS_DC)
{

    // is it safe to use these macros in this recursive function?
    RETVAL_BOOL(1);

    // or this
    RETURN_LONG(42);


}


[0] https://github.com/sneakyimp/amfext

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