PHP Script If Statement Pages

Easily create pages like /index.php?action=home, /index.php?action=about, or any other pages you'd like.

<?php

   // set up php get action
   $page = $_GET['action'];

      // set up php home on index.php?action=home
      if($page == 'home'){

           // if page is home content displays
           echo 'This is home page';

      // set up php about on index.php?action=about
      } elseif($page == 'about'){

           // if page is about content displays
           echo 'This is about page';

      // if page is normal.. on index.php
      } else {

          // display following content displays
          echo 'Some random content on main page';

      // end if statement..
      }

?>

Code (markup):

To change the /?action=home, change the first string I set up... like so:

$page = $_GET['[color=red]action[/color]'];

Code (markup):

for all of the pages, just change each one of these:

} elseif($page == '[color=red]about[/color]'){

Code (markup):

I recommend including files instead of echoing text.. like this:

} elseif($page == 'about'){
// if page is about content displays
include('[color=red]page.php[/color]');

Code (markup):

 

Or simply:

$function = 'display_' . $_GET['action'];

if (function_exists($function)) {
    $function();
}

function display_home() {

}

function display_about() {
   
}

PHP:

This allows you to simply add a simple function instead of having to do the if else structure.

 

To iterate that (and what is an ifelse?) Something like this tends to work better.

$page = isset($_REQUEST["page"])?str_replace(".", "", $_REQUEST["page"]):"home";

//the reason for the replacement of . is to prevent hack attemps like page=../../ etc

if(!file_exists(realpath("pages/".$page.".php"))) { echo "Unable to load requested page"; }
else { include('pages/'.$page.'.php'); }

PHP:

including a file is fine, but make sure you secure the input then. (and I've always prefered switch() { } statements over large blocks of if-then-else)

 

My mistakes. Else if.

I am fairly new to PHP. A function would indeed work better/easier.

 

Regardless if you use his or my method, make sure you sanitize your inputs.