PHP for loop not incrementing

Question

I have the following PHP code:

$todaysdate = date_create();
for ($i = date_sub(date_create(),date_interval_create_from_date_string("1 month")); $i <= $todaysdate; $i = date_add($i,date_interval_create_from_date_string("1 day"))) {
    $json['message'][] = $i;
}

The counter $i doesnot increment at all. $i remains at Object { date="2017-03-02 20:00:55.000000", timezone_type=3, timezone="Asia/Kolkata"}

it works for me on phptester.net, prints whole of feb and the 1st of march — Robert Pounder
– Robert Pounder, Commented Mar 1, 2017 at 14:50
@RobertPounder I get $json with 28 occurances but all the dates in the 28 arrays are 2017-03-02 14:55:37.031447 is that what you get — RiggsFolly
– RiggsFolly, Commented Mar 1, 2017 at 14:57
@RobertPounder I'm using PHP 5. unfortunately, my dates are not incrementing. same situation as riggsfolly. — user3980196
– user3980196, Commented Mar 1, 2017 at 15:13

user3980196 · Accepted Answer · 2017-03-01 15:29:48Z

1

As suggested by RiggsFolly, I updated the code to the following:

$todaysdate = date_create();
for ($i = date_sub(date_create(),date_interval_create_from_date_string("1 month")); $i <= $todaysdate; $i = date_add($i,date_interval_create_from_date_string("+1 day"))) {
    $json['message'][] = $i->format('d-m-Y');
}

It's now working. The only change was the line $json['message'][] = $i->format('d-m-Y');

answered Mar 1, 2017 at 15:29

user3980196

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1 Comment

penalosa Over a year ago

What about using the DatePeriod class, e.g.

$todaysdate =date_create();$month= new DatePeriod(date_sub($todaysdate,date_interval_create_from_date_string("1 month")),date_interval_create_from_date_string("1 day"),$todaysdate);foreach($month as $day){...

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