PHP5 call external C library, solve the idea

PHP5 call external C library, nasty!
---------external C function hello.c----------
#include
#include
#include
#include
#include
int hello_cc (char * dbg)
{
Syslog (Log_debug, "hello_cc%s\n", DBG);
if (dbg==null) return-1;
if (strlen (DBG) >1024) return-1;
printf ("%s\n", DBG);
Syslog (Log_debug, "hello_cc return\n");
return 0;
}
---------php5 extension function hello.c-----------
Const Zend_function_entry hello_functions[] = {
Php_fe (confirm_hello_compiled, NULL)/* For testing, remove later. */
Php_fe (Hello, NULL)
Php_fe_end/* Must be the last line in hello_functions[] */
};
Php_function (confirm_hello_compiled)
{
char *arg = NULL;
int Arg_len, Len;
Char *STRG;

if (Zend_parse_parameters (Zend_num_args () tsrmls_cc, "s", &arg, &arg_len) = = FAILURE) {
Return
}

Len = spprintf (&STRG, 0, "congratulations! You have successfully modified EXT/%.78S/CONFIG.M4. Module%.78s is now compiled to PHP. "," Hello ", arg$
Return_stringl (STRG, Len, 0);
}
Php_function (Hello) {
char *dbg = NULL;
int Dbg_len, Len;
int result;

if (Zend_parse_parameters (Zend_num_args () tsrmls_cc, "s", &dbg, &dbg_len) = = FAILURE) {
Return
}
RES_CC = HELLO_CC (DBG);
Return_long (RES_CC);
}
------------PHP5 Call-------------
if (!extension_loaded ("Hello")) {
print "Skip";
} else {
DL (' hello.so '); PHP5 in DL () is masked and added directly to the php.ini hello.so
echo Hello ("SSSSSSSSQQQQQQQQQQQQ");
}

Output-->> blank page, estimated to have collapsed.
Solve the correct php_function (hello), Emergency!!!

------Solution--------------------
If the HELLO_CC definition is not wrong, put it together and compile it.

But you're in the hello_cc. printf seems to violate the convention of PHP extension.

