在Smarty中创建指定月份的时间戳

Question

I am populating a simple HTML select list in a Smarty template with month names. A timestamp object is passed to the template. I would like the passed in timestamp month to be the default value of the select. The passed value could be passed in as an int (1,2,3,etc...) or a string (jan,feb,mar,etc...).

To set a default, selected value I need to compare the passed in timestamp month to a timestamp I created in the template. For example, to compare to just the current month I would do something like this:

<option {if $smarty.now|date_format:"%b" = $passedInTimestamp['month']}selected{/if}>
    text
</option>

$smarty.now will only work for the current month obviously. My <option> tag is inside a for loop, looping from 1 to 12. How can I create a timestamp with a specific month to compare to the passed in month?

Answer 1

If I understood well, this is what you need :

<select>
{for $i=1 to 12}
    <option {if '1-'|@cat:$i:'-':'Y'|date|@strtotime|date_format:"%b" == $passedInTimestamp['month']}selected{/if}>
        {$i}
    </option>
{/for}
</select>

First, I created a date string for months using cat modifier :

{'1-'|@cat:$i:'-':'Y'|date}
// will output 
// 1-1-2013   1-2-2013   1-3-2013 ....

Then I used strtotime modifier to convert it to timstamp

{'1-9-2013'|@strtotime}
// will output 1377986400

Finally I used date_format:"%b" as you did above to compare it to your passed in timestamp month.