I have my users pass values to PHP using POST or GET methods, but I don’t record these values using methods like SESSION or database. Will PHP automatically leave a record of these values on the server?
>Solution :
PHP itself will not log or store those values automatically, no.
However, the data will have passed through your webserver software in order to reach PHP, and your webserver may log some or all of this data.
What precisely is logged depends on which webserver you use and how the logging feature is configured, but in most setups by default you’re likely to find that the request body (where POST variables are transmitted) is not logged, but that the URL, including the querystring (where GET variables are transmitted) usually is logged.