php includes/require once etc

[jas4]

whats the best way to include code from another file into the php file that will be seen on the site,

 

and what effect does this have on the speed? does it hold it up or delay it at all?

 

e.g. making a login script and if the login is succesfull then include('loginSuccess.php') else not succesfull so  include('loginFail.php');

 

thanks

[NArc0t1c]

include("page.php"); to include the page in your script.

require("page.php"); for something like variables.

[pranav_kavi]

Using 'REQUIRE' will ensure that the file is included as the parser looks for 'REQUIRE's prior to parsing the file. Thus 'REQUIRE' files are always included. However the 'INCLUDE' may be avoided via programming.

 

i.e.

$status = 0;

if $status = 0 {
include_once '.\temp.php';
}
else {
include_once '.\temp1.php';
}

In this case the file to be included will depend on the status of the variable '$status'.

 

In the other case,

if $status = 0 {
require_once '.\temp.php'
}
else {
require_once '.\temp1.php'
}

then BOTH files(temp and temp1.php) would be included, irrespective of the value of $status.

[NArc0t1c]

That's why people learn to use ==.

[jas4]

ok thanks, so what about the time taken to include these files, will it effect the speed at all, especially if you use a template page where you include a top part and a bottom part, so a minimum of 2 includes per page.

 

Is there any better way to do this (make a template) that you reccomend?

 

thanks

[pranav_kavi]

A template wud ve a header & footer that wud be needed across d entire application.In such cases include/require can b used.

[jas4]

ok one more question, if I am including 2 files, and I want to start a session, i.e. for a restricted area, do I need 2 sets of this:

 

<?php
session_start();
   	if(!isset($_SESSION['id'])){
	header("Location: pleaseLogIn.html");
	exit;
} else {
?> 

          ......html <?php } ?>

 

logically i would have thought that I need only include it once, but it seems that the server will only let it go if I put the piece of code above in both include files, so effectively i'm starting the session twice in the same php web page, that cant be right?? :-\

[trq]

logically i would have thought that I need only include it once

 

And you would be correct.

[jas4]

so for the bottom include, then technically there is no way of protecting the direct url as the code will not be protected by

 

<?php
session_start();
   	if(!isset($_SESSION['id'])){
	header("Location: pleaseLogIn.html");
	exit;
} else {

 

unless I change the read/write permissions of the file( i think?!)

[trq]

You can stop the file being accessed directly by placing the following in it....

 

<?php

  if (__FILE__ == $_SERVER['SCRIPT_NAME']) {
    die("You are not permitted to access this file directly");
  }

?>

[sKunKbad]

You can stop the file being accessed directly by placing the following in it....

 

<?php

  if (__FILE__ == $_SERVER['SCRIPT_NAME']) {
    die("You are not permitted to access this file directly");
  }

?>

 

If you have a script that is trying to access a script/file that is on another server, will this block that access?