Fix bug #67704: CURLOPT_POSTFIELDS modify the type of param base php-5.5

[redfoxli]

curl_setopt will modify the type of param
the bugs is here: https://bugs.php.net/bug.php?id=67704

when the type of param is not string, we use a temp variable， then convert it to string, free the memory of the variable at last

bug fix base php-5.4 is here: #924

[datibbaw]

Can you also fix the issue for the s_list assignments, such as CURLOPT_HTTPHEADER?

[redfoxli]

@datibbaw
Yes, I can do it
CURLOPT_HTTPHEADER or CURLOPT_QUOTE or CURLOPT_HTTP200ALIASES ... has the problem, modify the type of param
Report a bug in bugs.php.net and post a new PR in here ?

[datibbaw]

Might as well do it within this PR, since the issue is highly related and occurs in the same function, too.

[redfoxli]

@datibbaw
Yes
I add the issue for the s_list assignments in bug 67704 (https://bugs.php.net/bug.php?id=67704)
and fix bug in this PR

[laruence]

please use ZVAL_COPY_VALUE macro here.

[datibbaw]

@laruence in 5.5 that doesn't work if the left operand is &tmp_current; I think that was only changed in master.

[laruence]

@datibbaw okey.. :<

[krakjoe]

This no longer applies to any supported branch of PHP, so closing PR.