Michael Michael - 2 months ago 11
PHP Question

Interpolate constant (not variable) into heredoc?

<?php
define('my_const', 100);
echo <<<MYECHO
<p>The value of my_const is {my_const}.</p>
MYECHO;
?>


If i put a variable inside the braces it prints out. But not the constant. How can I do it?
Thank's!

Answer

Use sprintf()

define('my_const', 100);
$string = <<< heredoc
      <p>The value of my_const is %s.</p>
heredoc;

$string = sprintf($string, my_const);