PHP script to print all the GET & POST variables

March29

Variables are one of the core powers of programming. As PHP programmers, we oftern may find that a $_GET or $_POST variable is not performing properly or the way we expected. This may occur for several reasons such as we made a mistake in the variable name. Sometimes this kind of problem take so much time that lots of time is wasted to correct a single variable!

So, you can use the scripts I have written below and use in your code whenever you suspect that there may be a problem with the variables. These scripts helps you by showing the details of each and every $_GET and $_POST variables in the script.

This is very easy and actually 3 (three) lines of code required.

Below is the code to print all $_GET variables:

<?php

print(‘<pre>’);
print_r($_GET);
print(‘</pre>’);

Click here to see the demo here.

To print all the $_POST variables, we need to change only one line:

<?php

print(‘<pre>’);
print_r($_POST);
print(‘</pre>’);

OK.
You can do it in another way too. It is simple also.

<?php

var_dump($_GET);

Or,

<?php

var_dump($_POST);

So, print your $_GET and $_POST variables whenever you think required.

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posted under PHP

12 Comments to

“PHP script to print all the GET & POST variables”

On March 30th, 2008 at 9:02 pm RA Says:
I came across you site while I was looking for some smart Bangladeshi coder who has passion for CSS.

If you pass second param true then print_r outputs to a variable. That you can show the result in any place!

$out = print_r($_POST, true)
On March 30th, 2008 at 9:46 pm admin Says:
Hello RA,

Yes. You are right.
Storing the value in a variable will give the coder flexibility to test the availability of the variables at any position in the page.

And thanks for the comment.
On November 13th, 2008 at 11:09 am FajitaMaster Says:
You could also use the ever so clever php $_REQUEST

echo ”;
var_dump($_REQUEST);
echo ”;

It gets both GET or POST values … now thats what I call universal!
On November 13th, 2008 at 11:14 am admin Says:
@ FajitaMaster

Yes.

You are right.
But in that case you do not know which are your POST or GET variables.
If you check the PHP manual, you will see that $_REQUEST use is discouraged.
On October 31st, 2009 at 9:46 pm Krinkle Says:
If you want the variables in a bit more clear on your screen, here’s a script I use on pretty much every ocasion I need to var_dump something:

http://pastebin.com/f3d201b3c

Basicly the same but makes a sticky terminal like box on the top left of the page. The box will be no more then 90% of the height if the document (just in case there are a looot of varibales, the overflow-y: is set to auto, so it’ll show a scrollbar when neccerary).

For the rest it’s devided in both POST and GET, with each one on a new line.

Handy
Feel free to customize to your liking.
On November 26th, 2009 at 12:07 pm Rahul Says:
Hi,

Can you help me with this:

I need to store all the post variables displayed in “print_r($_POST);” in an array so that I can compare it with a MySQL table.

Is there a way to do it ?

Thanks in advance
On November 26th, 2009 at 1:41 pm admin Says:
@ Rahul

Actually $_POST is an array itself.

So, try to get its keys and values as like other variables.
On November 30th, 2010 at 10:13 am ali Says:
beautiful website mate!!
cheers!
On January 30th, 2011 at 11:16 am Ion Adrian-Ionut Says:
foreach($_POST as $key=>$val) {
echo “Post named $key has the value $val “;
}

foreach($_GET as $key=>$val) {
echo “Post named $key has the value $val “;
}
On January 31st, 2011 at 11:43 am Nick Says:
Thanks @Adrian-Ionut, that was a more appropiate way to display all form values for me.
On March 15th, 2011 at 12:00 am Mark Says:
Some interesting ways to do it here. Personally I found the loop by @Adrian-Ionut to be the most useful.

Thanks to everyone for sharing the different approaches!
On February 3rd, 2012 at 11:24 am Tha_14 Says:
I would need some help man. I want to make a small php script that will use the $_GET thing to redirect to a website that you specify with that $_GET. Is there any way to make this small script for me? Thank you

PS: It’s for our site but me and my partner we are not really good coders on php hehe XD
Send me an email or post here and I will check when you have a small sript like that

Thank you.