[nycphp-talk] Quick little question - variable interpolation
Adam Fields
fields at surgam.net
Thu Oct 17 16:24:20 EDT 2002
On Thu, Oct 17, 2002 at 04:01:52PM -0400, Analysis & Solutions wrote:
> Just to make sure everything is clear to Adam:
>
> Only strings inside double quotes get evaluated. Strings inside single
> quotes are taken literally.
Yes, I'm fully aware of that. That was not my question.
> So:
>
> $one = 1;
> $two = "this string = $one and that is it";
> echo $two;
> [results: this string = 1 and that is it]
>
> $one = 1;
> $two = 'this string = $one and that is it';
> echo $two;
> [results: this string = $one and that is it]
That is also not my question. I don't want to know how to assign a
string such that variable interpolation happens. I want to know how to
take an existing string and perform variable interpolation on it. I
posted my solution already, but I'm still wondering if there's a
better way.
For completeness sake, here it is again (this does what I want, given
an existing string):
$i = 0;
foreach (explode(' ', $test) as $word) {
if (substr($word, 0, 1) == '$') {
$newstring[$i] = eval ("return $word;");
} else {
$newstring[$i] = $word;
}
$i++;
}
print join(' ', $newstring);
--
- Adam
-----
Adam Fields, Managing Partner, fields at surgam.net
Surgam, Inc. is a technology consulting firm with strong background in
delivering scalable and robust enterprise web and IT applications.
http://www.adamfields.com
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