CODEWITHSUNDEEP
phpdatetime
dtntcdr
dtntcdr

Reputation: 71

PHP Compare datetime values

In my PHP application I'm trying to compare date time values like the following:

if($datetime_from_db < date('Y-m-d H:i:s'))
{
    // then do something
}

Both values are in the same format. What I can't figure out is why it only compares the date and ignores the time. Both the date and the time values are important for me but I don't know how to make it work.

Upvotes: 7

Views: 29570

Answers (4)

Ras
Ras

Reputation: 197

Here is a solution where we use strtotime. I give two examples. First one comparing the whole timestamp. Second one is just compare the date.

<?php
$date = "2022-10-06 17:49:10"; // string. can set any current timestamp

#example 1 - compare the date and time Y-m-d H:i:s
if(date("Y-m-d H:i:s" , strtotime($date)) >= date("Y-m-d H:i:s")){
    echo "the date checked is bigger than today";
}else{
    echo "the date checked is smaller than today";
}

#example 2 - compare the date only Y-m-d 
if(date("Y-m-d" , strtotime($date)) == date("Y-m-d")){
    echo "same day is true";
}else{
    echo "same day is false";
}

Upvotes: 0

Tarun Gupta
Tarun Gupta

Reputation: 6403

This may help you.

$today = date("m-d-Y H:i:s");
$thisMonth =date("m");
$thisYear = date("y");
$expectedDate = $thisMonth."-08-$thisYear 23:58:00";
//pr($today);
//pr($expectedDate);


    if (strtotime($expectedDate) > strtotime($today)) {
        echo "Expected date is greater then current date";
        return ;
    } else
        {
         echo "Expected date is lesser then current date";
        }

Upvotes: 0

Andrew
Andrew

Reputation: 1653

If you want this to work with dates past 2038, you can't use strtotime() or time().

See this question for the explanation.

A better approach:

new DateTime($datetime_from_db) < new DateTime();

Upvotes: 9

deceze
deceze

Reputation: 522626

Comparing a string like "2011-02-14 15:46:00" to another string doesn't actually compare dates, it compares two strings according string parsing numeric rules. You will need to compare actual numeric timestamps:

strtotime($datetime_from_db) < time()

Upvotes: 22

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