Interpolate a constant (not variable) into 'heredoc'

constants, heredoc, php, syntax

Solution

Use sprintf()

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

$string = sprintf($string, my_const);

Problem

Consider: ``` <?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?

Original source

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