How Can I Effectively Pass Variables Between PHP Pages?

Pass Variables Between PHP Pages

Passing variables between PHP pages presents a challenge due to the stateless nature of HTTP. Here are three methods to achieve this:

Sessions

Sessions provide a secure way to store data on the server, accessible across pages. To use sessions:

• On Page 1: session_start(); | $_SESSION['varname'] = $var_value;
• On Page 2: session_start(); | $var_value = $_SESSION['varname'];

Cookies

Unlike sessions, cookies store data on the client's computer. They are less secure but useful for persisting data across sessions. To use cookies:

• On Page 1: setcookie('varname', $var_value, time() 3600);
• On Page 2: $var_value = $_COOKIE['varname'];

GET and POST Variables

These methods embed the variable in the URL or in a form submission:

• GET: Page 2 | On Page 2: $var_value = $_GET['varname'];
• POST:
  | On Page 2: $var_value = $_POST['varname'];

Recommendation

For simple string values, GET or POST variables are sufficient. However, if security or session persistence is a concern, sessions offer a more secure solution.

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