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Subject: Can someone explain me why this happens please?
From: jiangcat@gmail.com (Chris Jiang)

Hi all, since I started playing around with Zend API, I thought it would 
be better to start writing some small functions as practice. Then my 
entire weekend became nightmare.

I've tried to add a function activated in dynamic module, and it gives a 
very strange result. This function is really simple: taking an integer 
as argument, returns a 'hhhh:mm:ss' format string. If additional 
argument (BOOL) is set to true, then the 'hhhh' will turn to 'DD hh'.

Now, it works fine while compiled with GCC alone in standard C style, 
but while working as a PHP function, the result is like this:

(!靠备h2339:44:05
(!靠备窵▒97D 11:44:05

What are the characters in front of them? Where did they come? It's 
really confusing......

The original Zend style code is as follow:

--------------------------------------------------------------------

ZEND_FUNCTION(cj_format_clock)
{
	char res[50], myb[10];
	long mys = 0;
	double myd, myh, mym;
	zend_bool useDay = 0;

	if ( zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS() 
TSRMLS_CC, "l|b", &mys, &useDay) == FAILURE )
	{
		php_error(E_ERROR, "Expecting cj_format_clock([(INT)seconds])", 
get_active_function_name(TSRMLS_C));
		return;
	}

	if ( mys < 0 )
	{
		php_error(E_ERROR, "Number of second must be a possitive integer", 
get_active_function_name(TSRMLS_C));
		return;
	}

	if ( useDay )
	{
		myd = mys / 86400;
		mys %= 86400;
		sprintf(myb, "%.0f", myd);
		strcat(res, myb);
		strcat(res, "D ");
	}

	myh = mys / 3600;
	mys %= 3600;
	if ( myh < 10 )
		strcat(res, "0");
	sprintf(myb, "%.0f", myh);
	strcat(res, myb);

	strcat(res, ":");

	mym = mys / 60;
	mys %= 60;
	if ( mym < 10 )
		strcat(res, "0");
	sprintf(myb, "%.0f", mym);
	strcat(res, myb);

	strcat(res, ":");

	if ( mys < 10 )
		strcat(res, "0");
	sprintf(myb, "%d", mys);
	strcat(res, myb);

	RETURN_STRING(res, 1);
}