How do I add double quotes to a variable?

[datafan]

This may be a simple question but it's difficult to Google it. I need to take an existing variable and put double quotes around it.

So I have:

 

$foo = "bar";

echo $foo;

bar

 

I need:

"bar"

 

I have tried several variations of something like this:

$foo = '"' . $foo . '"';    (those are single quotes around double quotes in this example)

 

But everything I try seems to either throw a syntax type error or not do what I need.

Any ideas? 

Thank You

[benanamen]

echo $foo = '"bar"';

[Pikachu2000]

If you're saying you have bar stored in a variable without the double quotes and want to echo it with quotes:

 

$foo = 'bar';
echo '"' . $foo . '"';

[datafan]

<?php
$foo = "bar";
echo "$foo\n";
$kungfoo = '"$foo"';
echo "$kungfoo\n";
?>

I apologize, I should have clarified a bit better in my question.

 

My variable $foo is already set without the quotes, and I need to add quotes to the existing $variable.

 

The above code returns

bar

"$foo"

 

and I need

bar

"bar"

[datafan]

The example I put in my first post actually works? I need to step away from the keyboard for a while, been staring at this script for too long LOL

 

Thanks for the help, and the sanity check :-)

[requinix]

Variables don't work in single-quoted strings. Anything you can think of that doesn't try to do it should work. The '"' method is easiest.

[Barand]

or you can escape the double quotes

echo "\"$foo\"";