Please Clarity these 2 simple doubts in PHP..!

I am very fresh to PHP...,

if you consider the following statement..

echo "Your IP Address is " . $_SERVER['REMOTE_ADDR'];



it prints my ip but.., if i change to



---> echo "Your IP Address is . $_SERVER['REMOTE_ADDR']";
then to
----> echo "Your IP Address is " $_SERVER['REMOTE_ADDR'];

it showing errors...,





whats wrong..

> i need to know what is the importance of dot ( . ) before $_SERVER['REMOTE_ADDR'];
> why statement 1 ( echo "Your IP Address is . $_SERVER['REMOTE_ADDR']"; ) is wrong



Please give good explanation as i am very new to PHP..,

thanks friends..!

 

dot (.) is a string operator to concatenate
you can also do comma (,) in echo macro
like
---> echo "Your IP Address is ", $_SERVER['REMOTE_ADDR'];

 

Because PHP manual shows you that an array should be wrapped into curly brackets ( { } ) ?

echo "IP: {$_SERVER['REMOTE_ADDR']}";

PHP:

 

^^ any variable can also be wrapped

 

We are talking about arrays here, not just variables. Can and should doesn't mean the same in the context of what he asked / I replied.

 

$_SERVER['REMOTE_ADDR'], was this array or varialbe...., why,

<?php
$a = 10;
echo " this is $a "
?>

prints ----> this is 10

But why not

<?php
echo " $_SERVER['REMOTE_ADDR']";
?>

 

Read the PHP documentation:

 

Ya ya i got.., dear thanks for your help SwedBo,

and thanks SwedBo and gapz101.

 

You can use this:
echo "Your IP Address is $_SERVER[REMOTE_ADDR]";

 

Ya its working...!, thanks but friends
why this was not working if we put single quotes in it like

echo "Your IP Address is $_SERVER['REMOTE_ADDR']";

 

1. Dot joins the Output of PHP Variable with a Text precedes that
See my signature
2. The Text should be separated from a Variable
Also If you're going to use $_SERVER[REMOTE_ADDR] for detecting IP its not advised because it returns Proxy's IP when your using Proxy
So indeed i have a Algorithm for detecting a Real IP
If you need just Ping me (It hides in my HP NoteBook somewhere else so only)

 

Oops..! upto now i believe $_SERVER[REMOTE_ADDR] will gives the original ip......, but i need to get real ip..., if you have the algorithm please PM i really required this...!

 

Oops!
I hope it went into MacBook
So i have no other way
but i built using the algorithm written here
http://roshanbh.com.np/2007/12/getting-real-ip-address-in-php.html

Sorry!

 

Ya its ok, thanks for that link friend..!

 

Learning PHP is ease!
If you run into issues Google that and post here too
You can get your stuffs enriched easily
Minimum i will Google 100+ times a Day