Simple IP address check problem

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February 20th, 2013, 06:09 PM

ukndoit

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Simple IP address check problem

Ok, I am working on a page, I put my IP address in a string, then I have the code check the IP address of the visitor to see if the IP address is the same as mine that I hard coded so I can test things.

The problem is, that it fails every time. I am not sure it's because of the periods in the ip address or what... here is the code:

PHP Code:


		
			
if($_ENV['REMOTE_ADDR'] == "$_compIp") {

  echo "True";

} else {

  echo "False";

}

that prints False, but when I have it print the both the IP addresses they are the same in the string:

PHP Code:


		
			
echo "'" . $_ENV['REMOTE_ADDR'] . "'<br>";

echo "'" . $_compIp . "'";

that outputs: the same ip address in both quote marks, so it should be the same so the == should be TRUE.

I also tried this:

PHP Code:


		
			
 $cmp = strcmp($_ENV['REMOTE_ADDR'], $_compIp);

if($cmp > 1) {

 echo "Compare passed";

} else {

echo "Compare failed";

}

that prints the failed message every time. So even the compare is not working.

since

PHP Code:


		
			
 $_ENV['REMOTE_ADDR']

contains the ip address and it matches the one I hard coded to

PHP Code:


		
			
 $_compIp

I don't know why it is not working.

any idea how to make this work? I only need it while I am testing...

Thank you for your help if you can provide it.
Rich

February 20th, 2013, 06:26 PM

aeternus

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PHP Code:


		
			
echo $_SERVER['REMOTE_ADDR'];

that's your ip (see the manual )

p.s notice the difference when testing it locally and on a live server

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Last edited by aeternus : February 20th, 2013 at 06:30 PM.

February 20th, 2013, 06:43 PM

ukndoit

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Quote:

Originally Posted by aeternus

PHP Code:


		
			
echo $_SERVER['REMOTE_ADDR'];

that's your ip (see the manual )

p.s notice the difference when testing it locally and on a live server

thank you for your reply, I changed it and it still did not work:

PHP Code:


		
			
if($_SERVER['REMOTE_ADDR'] == "$_compIp") {

echo "True!!";

} else {

echo "Still False!";

}

output: Still False!

even though the IP address I echo above it in the Server remote addr is the same one In the string I am comparing.

Maybe I should explode the ip addresses into two arrays and check each sector against each other... individually, that is overkill, but it may work since this is not.

I am testing these on a live server, Unix Server running latest Apache and Php 5.x

any idea why it still is not working?

Thx again,
Rich

February 20th, 2013, 06:48 PM

Aurum84

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Remove the quotes around $_compIp ?

February 20th, 2013, 06:50 PM

aeternus

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as (implicitly) suggested you first echo out $_SERVER['REMOTE_ADDR']
Than you know exactly what value it has. Compare that to your hardcoded value.
Echo them both so you know exactly what is going on

February 20th, 2013, 06:50 PM

ukndoit

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Quote:

Originally Posted by Aurum84

Remove the quotes around $_compIp ?

done.... still false

crazy

Rich

February 20th, 2013, 06:52 PM

aeternus

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notice my post...

Quote:

Originally Posted by aeternus

as (implicitly) suggested you first echo out $_SERVER['REMOTE_ADDR']
Than you know exactly what value it has. Compare that to your hardcoded value.
Echo them both so you know exactly what is going on

February 20th, 2013, 06:59 PM

ukndoit

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Quote:

Originally Posted by aeternus

as (implicitly) suggested you first echo out $_SERVER['REMOTE_ADDR']
Than you know exactly what value it has. Compare that to your hardcoded value.
Echo them both so you know exactly what is going on

I did that... that is where I got my Ip address to put in the string.

I even echo both in double " so I can copy them exact to see if there is a empty space in the hard coded ip, but there is not.

Ok, I went back and re-copied the value, pasted it in the string and instead of putting:

PHP Code:


		
			
 $_compIp = '11.12.13.14';

I put:

PHP Code:


		
			
 $_compIp = "11.12.13.14";

then that worked. I am not sure if it was me re-copying the IP address or putting double quotes around the Stored IP address in the string...

at any rate it is working now.

Thank you very much for your assistance. I appreciate it.

Rich

February 20th, 2013, 07:03 PM

aeternus

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good to hear, always just echo out all values you are testing with. saves you a headache

P.s. you might want to read a bit about what the difference is between single and double quotes.

Last edited by aeternus : February 20th, 2013 at 07:05 PM.

Simple IP address check problem

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