Req #50228 [Opn->Sus]: Add function to eval strings as if they were heredoc'd

From: Date: Mon, 02 Sep 2019 14:28:50 +0000
Subject: Req #50228 [Opn->Sus]: Add function to eval strings as if they were heredoc'd
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-222523@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=50228&edit=1

 ID:                 50228
 Updated by:         cmb@php.net
 Reported by:        RQuadling at GMail dot com
 Summary:            Add function to eval strings as if they were
                     heredoc'd
-Status:             Open
+Status:             Suspended
 Type:               Feature/Change Request
-Package:            *General Issues
+Package:            Strings related
 Operating System:   *
 PHP Version:        *
 Block user comment: N
 Private report:     N

 New Comment:

This feature certainly requires discussion on internals and likely
the RFC process[1].  Feel free to start it.  For the time being,
I'm suspending this ticket.

[1] <https://wiki.php.net/rfc/howto>


Previous Comments:
------------------------------------------------------------------------
[2009-11-19 11:50:54] RQuadling at GMail dot com

Description:
------------
Hello.

I would like to suggest a heredoc() function along the lines of ...

string heredoc(string $template, [boolean $suppressErrors [, array 
&missingVariables]])

The purpose of the the function would be to allow the contents of a 
string to be interpreted just as if it had been supplied as a variable 
rather than as a constant.

So the output of the example below would be Match.

<?php
$name = 'Richard';

$template = 'My name is {$name}';

$result = <<< END_RESULT
My name is {$name}.
END_RESULT;

echo $result === heredoc($template) ? 'Match' : 'Different';
?>

Currently, to expand a template, output buffering and/or string/regex 
search/replace is required. Also eval() COULD be used but that has its 
own issues.

But it would seem all the processing logic already exists in the 
heredoc functionality.

Providing a function based upon the same functionality would certainly 
make templating easier.

The ability to suppress the generation of the errors and to capture 
the names of missing variables would allow for a degree of flexibility 
beyond the current implementation of heredoc, but could be worthwhile.

Regards,

Richard Quadling.



------------------------------------------------------------------------



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