PHP - Extremely light templating system

Question

does anyone know a php templating system that is very simple, something like almost as simple as str_replace("{variable}", $variable); ?

I need this for a series of textareas in the administration panel, where the site admin should change templates for various elements of the website (not complex stuff like pages etc, just blocks of content)

if you any only streplace tempalte system, write it, this is few lines. — Svisstack
– Svisstack, Commented Oct 31, 2010 at 22:19
yes, but it's not very elegant. at least is there any way to map multiple variables to strings wrapped between { }, to avoid using 1000 str_replace's ? — Alex
– Alex, Commented Oct 31, 2010 at 22:20

efritz · Accepted Answer · 2010-10-31 22:20:18Z

2

/**
 * Renders a single line. Looks for {{ var }}
 *
 * @param string $string
 * @param array $parameters
 *
 * @return string
 */
function renderString($string, array $parameters)
{
    $replacer = function ($match) use ($parameters)
    {
        return isset($parameters[$match[1]]) ? $parameters[$match[1]] : $match[0];
    };

    return preg_replace_callback('/{{\s*(.+?)\s*}}/', $replacer, $string);
}

answered Oct 31, 2010 at 22:20

efritz

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6 Comments

Emil H Over a year ago

Neat. :) It should be said that it's php 5.3+ only, though.

alex Over a year ago

You'll need to be running PHP 5.3 to use this. Otherwise it is not so elegant.

William Linton Over a year ago

Try to avoid this if you can. Regexes are resource-expensive.

Gordon Over a year ago

Same as Fabien Potencier's in Design patterns revisited with PHP 5.3 (page 45)

alex Over a year ago

@Alex You'll need to make a separate function for the callback (outside of the scope you are currently in).

|

alex · Accepted Answer · 2010-10-31 22:27:03Z

2

$findReplaces = array(
    'first_name' => $user['first_name'],
    'greeting' => 'Good ' . (date('G') < 12 ) ? 'morning' : 'afternoon'
);

$finds = $replaces = array();

foreach($findReplaces as $find => $replace) {
    $finds[] = '{' . $find . '}';
    $replaces[] = $replace;
}

$content = str_replace($finds, $replaces, $content);

edited Oct 31, 2010 at 22:27

answered Oct 31, 2010 at 22:21

alex

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4 Comments

Gordon Over a year ago

why dont you just include the curly braces, e.g. {{first_name}} in the array keys and simply do str_replace(array_keys($findReplaces),$findReplaces,$content)

alex Over a year ago

@Gordon Yep, that is much nicer. The only disadvantage I can see is that the delimiters need to be included which each search term - you know, the whole DRY thing.

Gordon Over a year ago

yes, but then again, everyone using a template engine with curly braces over just using PHP deserves that :)

Gordon Over a year ago

hehe, I will use that in my next project. no wait, I already do ;)

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