Prestashop Tools :: getValue（）函数不能转义sql注入？

I read in prestashop forum that the function Tools::getValue() do not escape sql injection. Now I wonder how I can prevent this function from sql injection when I want to get string or int value?

Can somebody show me example?

Tools::getValue() only retrieves POST or GET value.

To prevent SQL injection you can use pSQL() function or for int values you can do typecasting.

 $int_val = (int)Tools::getValue('someValue');
 $string_val = pSQL(Tools::getValue('someValue'));