syntax error in creating a string that contains a variable wrapped in nested quotes

Question

this cause error:

$xml .= "\t<team id=\"$team['id']\"";

this doesn't cause error:

$xml .= "\t<team id=\"\"";

What's the problem?

Answer 1

You can either remove the single quotes:

$xml .= "\t<team id=\"$team[id]\"";

Or you can use the curly brackets inside double quoted strings using one of the following syntax:

$xml .= "\t<team id=\"{$team['id']}\"";
$xml .= "\t<team id=\"${team['id']}\"";

Reference (scroll down to the "variable parsing" section).

Few more examples:

echo "$team[id]";
echo "{$team['first name']}"; // e.g. when there are spaces in key names
echo "{${getVarName()}}"; // e.g. when we cannot use $ directly

Answer 2

This should work:

$xml .= "\t<team id=\"$team[id]\"";

See how I removed the single quotes around the id.

Answer 3

Try this:

$xml .= "\t<team id='".$team['id']."'";

Answer 4

Try This

$xml .= "\t<team id=\"".$team['id']."\"";

Or you can use the curly brackets like this

$xml .= "\t<team id=\"{$team['id']}\"";

Answer 5

I think the problem is the $team['id'] more than the double quotes.

Have you tried:

$xml .= "\t<team id=\"".$team['id']."\""; 

• user1592648: by doing this the \t will no longer be interpreted as a tab space
• Naryl: totally true, changing to double quotes again.