用PHP替换通过PHP调用的值

I'm using a combination of WordPress and the qTranslate plugin to acheive a multi-language property site. I'm calling some hardcoded values in a custom way, as there's no default way in the theme to allow qTranslate in the labels.

So currently I've got:

<?php if(get_post_meta($post->ID,'property_pool',true) && $property_pool): ?>
            <li>
                <p><?php echo PROP_POOL_CSTM;?>:</p><p> <?php echo get_post_meta($post->ID,'property_pool',true);?></p>
            </li>
            <?php endif; ?>

Only problem is, 'property_pool' value is also coming in 1 language. I need to be able to modify the outcome directly on this page. If it's Yes, replace it with <!--:en-->Yes<!--:--><!--:es-->Si<!--:--><!--:ru-->да<!--:-->, and if it's No, replace it with <!--:en-->No<!--:--><!--:es-->No<!--:--><!--:ru-->нет<!--:-->.

I've looked a few things up, like str_replace but I'm a total beginner and have no idea how I can incorporate this into an existing function.

As you've described it, this should work

<?php if(get_post_meta($post->ID,'property_pool',true) && $property_pool):
    $property_pool_meta = get_post_meta($post->ID,'property_pool',true);
    if ($property_pool_meta == 'Yes') {
        $property_pool_meta = '<!--:en-->Yes<!--:--><!--:es-->Si<!--:--><!--:ru-->да<!--:-->';
    }
    elseif ($property_pool_meta == 'No') {
        $property_pool_meta = '<!--:en-->No<!--:--><!--:es-->No<!--:--><!--:ru-->нет<!--:-->';
    } ?>
    <li>
        <p><?php echo PROP_POOL_CSTM;?>:</p><p> <?php echo $property_pool_meta; ?></p>
    </li>
<?php endif; ?>

My only concern would be that that wouldn't be processed by qTranslate. To get qTranslate to process it, I'd replace

<?php echo $property_pool_meta; ?

with

<?php _e( $property_pool_meta ); ?>

qTranslate hooks into the __() and _e() functions.

Edit

If you have lots of values, you might be better off doing something like this (I haven't tested it, so there might be a syntax error or two in there):

<?php 
$property_pool_map = array(
    'Yes' => '<!--:en-->Yes<!--:--><!--:es-->Si<!--:--><!--:ru-->да<!--:-->',
    'No' => '<!--:en-->No<!--:--><!--:es-->No<!--:--><!--:ru-->нет<!--:-->'
);

if(get_post_meta($post->ID,'property_pool',true) && $property_pool):
    $property_pool_meta = get_post_meta($post->ID,'property_pool',true);
    if (isset($property_pool_map[$property_pool_meta])) {
        $property_pool_meta = $property_pool_map[$property_pool_meta];
    } ?>
    <li>
        <p><?php echo PROP_POOL_CSTM;?>:</p><p> <?php echo $property_pool_meta; ?></p>
    </li>
<?php endif; ?>