Converting seconds into period of time (PHP)

I have a bug reported whereby the user selects a date frame from a dropdown, hours, days, months and enter a freetext number.

When it's saved this is converted to a number of seconds.

I need to display this field as currently it's not being displayed. How can I work out how to make it into the same value they entered? We do not store the value of the dropdown for some strange reason.

Is there a way to just convert it to the maximum num开发者_如何学运维ber of time block available for that number of seconds, or shall I just store the dropdown field, which is what I'm likely going to do.

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Converting is not an option, since you don't know anything about what the user meant. For example, when I input the number '3', you can't determine if I meant 3 days or 3 months.

Let me elaborate a bit: if I input '3' and select 'days', the time in seconds is: 60 * 60 * 24 * 3 = 259200 seconds. When displaying, you could divide it so that the output is '3 days' again. But what if I inputted '72' and selected 'hours'? You can't tell.

Just store the users choice and you're fine.

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If you are looking to split it into chunks dependent such as days/months fairly simple maths operations inside a block should do the trick.

if($seconds > 2629743){
    // code for month 
}
elseif ($seconds > 86400) {
        // code for days
    }