在Heredoc标签之间连接内容

Question

I am converting some formatted html text to a PDF file, and in doing so, I must place a table in the document. In order to put the table into the PDF correctly, I must use heredoc tags instead of regulars quotations (Came to this conclusion through some experimentation). What I am wondering is whether I can take some content from a POST call and place it between the heredoc tags a la:

$table = $_POST['table'];
$html = <<<EOD . '$table' . EOD;

Or, something of the like. I haven't come across a solution, and was wondering if this was even possible. I have tried passing the table variable directly to the method, but it is a fruitless effort. It does work if passed with the heredoc tags, however.

Answer 1

You want to use an Encapsulated Heredoc for this purpose. Example #5 on that page. It allows you to place the heredoc in quotes and use curly braces to utilize your variables.

PHP Example

$hey = 'Test 1 2 3';

$html = <<<"TEST"
Test me: {$hey}
TEST;

echo $html;

Returns

Test me: Test 1 2 3

Answer 2

Yes, like the PHP documentation says:

$name = 'Davis';

echo <<<EOT
My name is "$name". I am printing some $_POST['table'].
Now, I am printing some {$foo->bar[1]} too!
This should print a capital 'A': \x41
EOT;

You have to make sure that your text is between your starting and ending line.