How to use single quotes inside single quotes?

Question

Hello. Can anyone explain how to make this code work?

echo '<div id="panel1-under">Welcome <?php echo "$_SESSION['username']"; ?></div>';

I've tried removing the single quotes so it's like this: - "$_SESSION[username]" but it doesn't work. Appreciate any help. Thanks!

Answer 1

You need to concatenate your strings & variables.

echo '<div id="panel1-under">Welcome ' . $_SESSION['username'] . '</div>';

Answer 2

Variable expansion doesn't work inside of single quotes. You can do either:

echo "<div id=\"panel1-under\">Welcome {$_SESSION['username']}</div>";

or

echo '<div id="panel1-under">Welcome ' . $_SESSION['username'] . '</div>';

Answer 3

echo "<div id=\"panel1-under\">Welcome ".$_SESSION['username']."</div>";

or

echo '<div id="panel1-under">Welcome '.$_SESSION['username'].'</div>';

Quick Explain :

• You don't have to reopen the tags inside a echo String (" ... ")
• What I have done here is to pass the string "Welcome " concatenated to *$_SESSION['username']* and "" (what the . operator does)

• PHP is even smart enough to detect variables inside a PHP string and evaluate them :

  $variablename = "Andrew";

  echo "Hello $variablename, welcome ";

=> Hello Andrew, welcome

More infos : PHP.net - echo

Answer 4

Inside single quotes, variable names aren't parsed like they are inside double-quotes. If you want to use single-quoted strings here, you'll need to use the string concatenation operator, .:

echo '<div id="panel1-under">Welcome <?php echo "'.$_SESSION['username'].'"; ?></div>';

By the way: the answer to the question in the title is that in order to use a literal single-quote inside a single-quoted string, you escape the single-quote using a backslash:

echo 'Here is a single-quote: \'';

Answer 5

Generally speaking, to use the single quote inside a string that is using the single quote as delimiter, just escape the single quote inside the string

echo 'That\'s all, folks';

It's not clear what the purpose of your code is, though.

echo '<div id="panel1-under">Welcome <?php echo "$_SESSION['username']"; ?></div>';

As you are already using PHP code, <?php echo is not necessary. If you are only trying to output the content of a session variable, then you can use

echo '<div id="panel1-under">Welcome ' . $_SESSION['username'] . '</div>';