| Re: variable replacement in string [message #178017 is a reply to message #178011] |
Thu, 10 May 2012 16:37   |
M. Strobel
Messages: 386
Registered: December 2011
Karma:
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Senior Member |
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Am 10.05.2012 16:10, schrieb Sandman:
> In article <a11rgoFph0U1(at)mid(dot)uni-berlin(dot)de>,
> "M. Strobel" <sorry_no_mail_here(at)nowhere(dot)dee> wrote:
>
>> Hi,
>>
>> I am still searching a function in PHP to execute variable replacement in
>> strings.
>> Other languages do have this, but for PHP I can only find sprintf() and
>> string replace.
>>
>> I have
>>
>> $t = ' - solved - ';
>> $msg = 'The problem is $t';
>>
>> I want now:
>>
>> echo fxx($msg);
>>
>> print out "The problem is - solved - ".
>>
>> Please don't tell me about $msg = "The problem is $t"; just think of $msg
>> like a
>> template read from a file.
>>
>> /Str.
>
> Before coding PHP I used Roxen and their "RXML" language, which was
> pretyt much just fancy HTML (RXML stood for Roxen Markup Language) and
> they had variable templating in strings. When moving to PHP I missed
> this.
>
> So I have this templet string for headline formatting in blog posts
> (for instance):
>
> $template = "<h2>#headline#</h2>
> #date#, <span class='subline'>#category#</span>";
>
> And then I have an array with the blog post:
>
> $article = array(
> "headline" => "Hello world!",
> "date" => "2012-04-23",
> "category" => "Fun stuff"
> );
>
> And I have this function I call "parserxml()" which is "Parse rxml"
> not "parser xml" :)
>
> function parserxml($string, $var = false) {
> # RXML 1.0
> $string = preg_replace("/#([a-z]+)#/se", "\$var['\\1']",
> $string);
> # RXML 2.0
> if (preg_match_all("/&([a-z_A-Z]+)\./i", $string, $matches)) {
> foreach($matches[1] as $m) {
> global $$m;
> }
> $string =
> preg_replace("/&([a-zA-Z_]+)\.([a-zA-Z_]+);/sei", "\${\\1}['\\2']",
> $string);
> }
> return $string;
> }
>
> Which I use as such:
>
> print parserxml($template, $article);
>
> You may also note that there is support for "RXML 2.0" in that
> function as well, which used a slightly different syntax that could
> define scope as well:
>
> $template = "<h2>#headline#</h2>&user.name;"
>
> The second part would globalize $user and replace that with
> $user["name"].
This type of solution was commented already with a one-liner: create my own variable
system?
Thank you for this complete proposal. You are the first to know what I am missing.
/Str.
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