Writing a PHP extension in C, I want to convert a userland object (IS_OBJECT
) to a string through __toString()
if it has one, and fail otherwise. What should I use?
I don't need another zval
on output, just a char *
.
zval *zo;
switch (Z_TYPE_P(zo)) {
case IS_STRING:
... Z_STRVAL_P(zo) ...
break;
case IS_OBJECT:
... ???(zo) ...
break;
...
}
The reflection module does something like
ZVAL_STRINGL(&fname, "__tostring", sizeof("__tostring") - 1, 1);
result= call_user_function_ex(NULL, &object, &fname, &retval_ptr, 0, NULL, 0, NULL TSRMLS_CC);
zval_dtor(&fname);
if (result == FAILURE) {
_DO_THROW("Invocation of method __toString() failed");
/* Returns from this function */
}
And then you'd extract the char* with Z_STRVAL_P().
But I guess you could also use
case IS_OBJECT:
if ( SUCCESS==zend_std_cast_object_tostring(uservar, uservar, IS_STRING TSRMLS_CC) ) {
int len = Z_STRLEN_P(uservar);
char* pValue = Z_STRVAL_P(uservar);
...
}
zend_std_cast_object_tostring() is implemented in zend/zend_object_handlers.c. You might want to check if it really does what you want