How Can I Simplify Calling PHP Functions Inside HEREDOC Strings?

Calling PHP Functions within HEREDOC Strings: A Simplified Method

In PHP, HEREDOC strings offer a convenient way to output blocks of HTML. However, executing complex expressions or calling functions within these strings can be challenging. While PHP 5 provides the capability to call functions, it requires storing the function name in a variable. This approach can be cumbersome.

To address this, consider the following elegant solution:

function fn($data) {
  return $data;
}
$fn = 'fn';

$my_string = <<<EOT
Number of seconds since the Unix Epoch: {$fn(time())}
EOT;

In this example, a helper function fn is created, and its name is stored in the variable $fn. The function returns the input data unchanged.

Now, within the HEREDOC string, the $fn variable is used as a prefix to the function name. This effectively calls the fn function and passes the argument time(). The result is seamlessly incorporated into the string.

This method simplifies function calls within HEREDOC strings while maintaining the desired functionality. It also avoids the need for complex syntax or workarounds.

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