static int user_tick_function_compare(user_tick_function_entry * tick_fe1, user_tick_function_entry * tick_fe2) /* {{{ */
{
	zval *func1 = tick_fe1->arguments[0];
	zval *func2 = tick_fe2->arguments[0];
	int ret;
	TSRMLS_FETCH();

	if (Z_TYPE_P(func1) == IS_STRING && Z_TYPE_P(func2) == IS_STRING) {
		ret = (zend_binary_zval_strcmp(func1, func2) == 0);
	} else if (Z_TYPE_P(func1) == IS_ARRAY && Z_TYPE_P(func2) == IS_ARRAY) {
		zval result;
		zend_compare_arrays(&result, func1, func2 TSRMLS_CC);
		ret = (Z_LVAL(result) == 0);
	} else if (Z_TYPE_P(func1) == IS_OBJECT && Z_TYPE_P(func2) == IS_OBJECT) {
		zval result;
		zend_compare_objects(&result, func1, func2 TSRMLS_CC);
		ret = (Z_LVAL(result) == 0);
	} else {
		ret = 0;
	}

	if (ret && tick_fe1->calling) {
		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to delete tick function executed at the moment");
		return 0;
	}
	return ret;
}
/* }}} */

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.