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Calculating Date sequence in PHP

+3 votes

I am trying to calculate a date sequence using $i in conjunction with " (so the represented # is "seen" by PHP)

The code results in 2 errors:

Notice: Undefined variable: i_days_ago in test.php on line 9
Notice: Undefined variable: i_days_ago in test.php on line 13

Is there a way to do this without creating these errors and also "NOTICE" errors? The dates being calculated will be used in a database query (used to generate a report based on the activity between the starting and ending dates).

posted Nov 12, 2013 by Anderson

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1 Answer

+1 vote

You need to concatenate the string. Right now php thinks that $i_days_ago is a string since you have it in double quotes. You should do

$users_dates[$i . "_days_ago"]['starting_date'] = $dt->format('Y-m-d 00:00:00');
$users_dates[$i . "_days_ago"]["ending_date"] = $dt->format('Y-m-d 23:59:59');
answer Nov 12, 2013 by Sonu Jindal
Or you can do:

 $users_dates["{$i}_days_ago"]['starting_date'] = $dt->format('Y-m-d 00:00:00');
 $users_dates["{$i}_days_ago"]['ending_date'] = $dt->format('Y-m-d 23:59:59');
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