PHP - Calculate Number Of Days Between 2 Dates

I have this block of code that was written by someone years ago :-

 

<?php

	class BoDelivery {
		
		public function EstimatedDays($off, $standard_days, $saturday, $delay) {
            
            $today = date("N"); // Weekday - number 1-7
            $now = strtotime("now"); // Unix
            
            $off_array = explode(":", str_replace(".", ":", $off));
            
            $off_unix = mktime($off_array[0], $off_array[1], "00", date("n"), date("j"), date("Y"));

            $sending_days_from_now = 0;
            if ($now > $off_unix) {
                $sending_days_from_now++;
            }
            $sending_day = $today + $sending_days_from_now;
            switch ($sending_day) {
                case 6:
                    $sending_days_from_now++;
                    $sending_days_from_now++;
                    break;
                case 7:
                    $sending_days_from_now++;
                    break;
            }
            $sending_day = $today + $sending_days_from_now;

            // Estimated delivery time
            $delivery_days = $standard_days;
            $over_weekends = 0;

            // Add Delay
            if ($delay) {
                $delivery_days = $delivery_days + $delay;
            }
			            
            if ($sending_day == 5 && !$saturday) {
                $delivery_days++;
                $delivery_days++;
                $over_weekends++;
            }
            
            $delivery_day = $sending_day + $delivery_days;

            switch ($delivery_day) {
                case 6:
                    if (!$saturday) {
                        $delivery_days++;
                        $delivery_days++;
                        $over_weekends++;
                    }
                    break;
                case 7:
                    $delivery_days++;
                    $over_weekends++;
                    break;
            }
            
            if ($over_weekends == 0 && $delivery_days > 5) {
                $delivery_days++;
                $delivery_days++;
            }
            
            $delivery_day = $sending_day + $delivery_days;
            
            switch ($delivery_day) {
                case 13:
                    $delivery_days++;
                    $delivery_days++;
                    $over_weekends++;
                    break;
                case 14:
                    $delivery_days++;
                    $over_weekends++;
                    break;
            }
            
            $delivery_day = $sending_day + $delivery_days;
            
            $delivery_days = $delivery_day - $today;
            			
			return $delivery_days;
			
		}
		
	}
	
?>

 

Which is supposed to calculate the number of days for delivery, taking into account weekends & with a delay variable that we can set.

It isn't working as expected, may never have worked(??) or maybe down to PHP upgrades.

For example, if today (18th)I set the delay to 2 days the delivery estimate is the 21st (which is correct), if I change the delay to 3 OR 4 it becomes the 24th, 5 then becomes the 26th!

I can't get my head around the code at all, I wonder if someone could assist in what may be going on or add comments to the code snippets so I can maybe work it out?

 

Thanks for any help.

Hi, I am trying to get the number of days between the current date and a date in the future specified by column 'end_date'. The code I have seems to be working but it displays the number of days as a negative number, how do I change this to be a positive number? I have tried simply changing $days = $now - $end_date; to $days = $end_date - $now; but that doesn't work as I thought it would! Thanks in advance..

Code: [Select]
$now = time();
      $end_date = strtotime($row['end_date']);
      $days = $now - $end_date;
      echo floor($days/(60*60*24));

hi friends could someone help with this criteria? i want to restrict entry to db if the post value number was entered into db less than 31 days ago?  

if($homePhone == '') {


        $qry = "SELECT * FROM table WHERE homePhone='$homePhone '";

        $errmsg_arr[] = 'Data not posted, number was posted by someone less than 31 days ago';

        $errflag = true;

    }

  in db i store time in datetime current timestamp like 2013-07-13 21:19:15     could someone help me out?
Edited by lovephp, 12 July 2014 - 11:36 AM.

I have a database lets say punch_log

The data in the table looks like:
---------------------------------------------------------------------------
|punch_log_id |  user_id | punch_id |   punch_time           |
---------------------------------------------------------------------------
|   10010         |  21         |   1       | 2010-11-10 15:04:59|
|   10011         |  21         |       2       | 2010-11-10 15:50:05|
|   10010         |  21         |   1       | 2010-11-11 15:04:59|
|   10011         |  21         |       2       | 2010-11-11 15:50:05|
|   10010         |  21         |   1       | 2010-11-12 15:04:59|
|   10011         |  21         |       2       | 2010-11-12 15:50:05|
|   10010         |  21         |   1       | 2010-11-13 15:04:59|
|   10011         |  21         |       2       | 2010-11-13 15:50:05|
|   10010         |  21         |   1       | 2010-11-14 15:04:59|
|   10011         |  21         |       2       | 2010-11-14 15:50:05|
|   10010         |  21         |   1       | 2010-11-14 15:50:59|  <-- this is why i need this.
|   10011         |  21         |       2       | 2010-11-14 15:55:05|  <-- this is why i need this.
----------------------------------------------------------------------------

Im currently using :

$kust  = $_POST['AKuu'];
$kuni3 = $_POST['LKuu'];
$valitudtootaja   = $_POST['TNimi'];


mysql_select_db($database, $con);
$query2 = "SELECT *, SUM(punch_id) FROM punch_log WHERE user_id = '".$valitudtootaja."' AND punch_time   BETWEEN '$kust' AND '$kuni3' AND punch_id ='1' ";   
$result2 = mysql_query($query2) or die(mysql_error());
while($row = mysql_fetch_array($result2)){
   $X = $row['SUM(punch_id)'];

When using the current query im getting

Workers days at work = 6
it should be 5 but thats why i need some solution to group dates and then sum them.

Does anybody have any ideas?

Hi guys,

I am new to PHP/coding and am trying to look for
1. A way of comparing the words in one static array against other dynamically created arrays (created from mysql queries)
2. Work out how many similar words there are - then assign that number to that array

My static array is...$comparewithme = array with values = this is an example of an array

Mysql_query("select id, words from table_example")
Results from query are put into an array that is named according to id..
$result2 = array with values = this is an example of queries
$result3 = array with values = this is not an example of php

Comparison should give the following info
Comparing $comparewithme with $result2 should generate a hit rate of 5 (similar words=this is an example of)...
Comparing $comparewithme with $result3 should generate a hit rate of 4 (similar words=this is an example)...

Any ideas greatly appreciated...thanks in advance

Hi there,

i am using a form with 2 inputs which are equipped with a datepicker: Date 1 & Date 2, is it possible to calculate how many days are there from Date 1 to Date 2 (including the selected ones) ?

On my form the dates are in this format: September 08, 2011 (i guess i can change that to numeric only, if that helps) Tamper data shows them getting posted like this: September+14%2C+2011

Any help / hints will be appreciated !

Hi,

I have a job listing website which displays the closing date of applications using:

$expired_date

(This displays a date such as 31st December 2019)

I am trying to show a countdown/number of days left until the closing date.

I have put this together, but I can't get it to show the number of days.

                    <?php 
                    $expired_date = get_post_meta( $post->ID, '_job_expires', true );
                    $hide_expiration = get_post_meta( $post->ID, '_hide_expiration', true );
                    if(empty($hide_expiration )) {
                        if(!empty($expired_date)) { ?>
                                <span><?php echo date_i18n( get_option( 'date_format' ), strtotime( get_post_meta( $post->ID, '_job_expires', true ) ) ) ?></span>
                    
                    <?php
                                        $datetime1 = new DateTime($expired_date);
                                        $datetime2 = date('d');
                                        $interval = $datetime1->diff($datetime2);
                                        echo $interval->d;

                     ?>
                        <?php }
                    } 
                    ?>

Can anyone help me with what I have wrong?

Many thanks

Hi All,

I need to subtract dates and display the number of days left.  I have a 'Start' date and an 'End' date in DATETIME format in the DB.  Not quite sure where to start.  A simply start - end doesn't work  .

Start = 2011-11-01-00:00:00
End = 2011-11-30-23:59:59

Since it is now 2011-11-27, my output should equal 3.  Any help is appreciated.

I'm getting the dreaded " Invalid parameter number: number of bound variables does not match number of tokens" error and I've looked at this for days.  Here is what my table looks like:

|  id          | int(4)       | NO   | PRI | NULL    | auto_increment |
| user_id     | int(4)       | NO   |     | NULL    |                |
| recipient   | varchar(30)  | NO   |     | NULL    |                |
| subject     | varchar(25)  | YES  |     | NULL    |                |
| cc_email    | varchar(30)  | YES  |     | NULL    |                |
| reply       | varchar(20)  | YES  |     | NULL    |                |
| location    | varchar(50)  | YES  |     | NULL    |                |
| stationery  | varchar(40)  | YES  |     | NULL    |                |
| ink_color   | varchar(12)  | YES  |     | NULL    |                |
| fontchosen  | varchar(30)  | YES  |     | NULL    |                |
| message     | varchar(500) | NO   |     | NULL    |                |
| attachment  | varchar(40)  | YES  |     | NULL    |                |
| messageDate | datetime     | YES  |     | NULL    |        

Here are my params:

            $params = array(                 
               ':user_id' => $userid,                 
               ':recipient' => $this->message_vars['recipient'],                 
               ':subject' => $this->message_vars['subject'],                 
               ':cc_email' => $this->message_vars['cc_email'],                 
               ':reply' => $this->message_vars['reply'],                 
               ':location' => $this->message_vars['location'],                 
               ':stationery' => $this->message_vars['stationery'],                 
               ':ink_color' => $this->message_vars['ink_color'],                 
               ':fontchosen' => $this->message_vars['fontchosen'],                 
               ':message' => $messageInput,                 
               ':attachment' => $this->message_vars['attachment'],                 
               ':messageDate' => $date             );

Here is my sql:

$sql = "INSERT INTO messages (user_id,recipient, subject, cc_email, reply, location,stationery, ink_color, fontchosen, message,attachment) VALUES( $userid, :recipient, :subject, :cc_email, :reply, :location, :stationery, :ink_color, :fontchosen, $messageInput, :attachment, $date);";

And lastly, here is how I am calling it:
            $dbh = parent::$dbh;             
           $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);              
           if (empty($dbh))    return false;             
                  $stmt = $dbh->prepare($sql);             
                 $stmt->execute($params) or die(print_r($stmt->errorInfo(), true));              
           if (!$stmt) {    print_r($dbh->errorInfo());              }

I know my userid is valid and and the date is set above (I've echo'd these out to make sure).  Since the id is auto_increment, I do not put that in my sql (though I've tried that too), nor in my params (tried that too).  What am I missing?  I feel certain it is something small, but I have spent days checking commas, semi-colons and spelling.  Can anyone see what I'm doing wrong?

Hi guys,

I am trying to do a multidates events availability calender. The script below indicates todays date by highlighting an orange colour and also indicates the start and end date of the event highlighting grey colour on the two dates (The colour are link via css classes as shown).
Code: [Select]
//Today's date
$todaysDate = date("d/m/Y");
            $dateToCompare = $daystring . '/' . $monthstring . '/' . $year;
echo "<td align='center' ";
if($todaysDate == $dateToCompare){
echo "class='today'";
}else{
//Compare's the event dates
$sqlcount = "select event_start,event_end from b_calender where event_start ='".$dateToCompare."' AND event_end='".$dateToCompare."'";
$noOfEvent = mysql_num_rows(mysql_query($sqlcount));
if($noOfEvent >= 1){
echo "class='event'";
}
}
It works ok i.e. if start date = 01/01/2012 and end date = 04/01/2012 both date will be highlighted with grey colour. However I want it to also highlight grey on the dates between the 1st and 4th to show that then anydates between the 1st and 4th are not available and this is when I'm stuck.

Please guys I need help.

Thanks

Hello, I have problem durring binding update query. I can't find what is causing problem.

public function Update(Entry $e)
    {
        try
        {
            $query = "update entry set string = $e->string,delimiter=$e->delimiter where entryid= $e->id";
            $stmt = $this->db->mysqli->prepare($query);
            $stmt->bind_param('ssi',$e->string,$e->delimiter,$e->id);

            $stmt->close();
           

        }
        catch(Exception $ex)
        {
            print 'Error: ' .$ex->getMessage();
        }
    }

When I run function update I'm getting next error:Warning: mysqli_stmt::bind_param(): Number of variables doesn't match number of parameters in prepared statement   Can you help me to solve this problem ?
Edited by danchi, 17 October 2014 - 10:25 AM.

I need to display a number(the number is retrieved from the db) in the form input field such that only the last 4 digits is visbile, the remaining can be masked as * or X or whatever is applicable.

I know the last 4 can be obtained as follows:

    Code: [Select]
$number=substr($number,-4,4);
 
But when i hit the submit button the form validates the input field and checks if the number is a valid number of a specific format.
Therefore when I click on the submit button then I should still be able to unmask the masked numbers or do something similar that would help me validate the whole number.

  Code: [Select]
  <input type="text" name="no" value="<?php if(!empty($number)){ echo $number;} ?>">

I'm trying to figure out if today's current date and time falls between Mon & Fri, but so far, I can't get it to work.
Can anybody look at my code and see what I'm doing wrong?

Code: [Select]
<?php
$day_start = date('D h:i a', strtotime("Mon 05:30"));
$day_end = date('D h:i a', strtotime("Fri 10:00"));
$day_current = date('D h:i a', strtotime("+1 hours"));

if (($day_current > $day_start) && ($day_current < $day_end))
{
echo "yup";
}
else {
echo "nope";
}
?>

Thanks in advance

When I try to add 30 days:
Code: [Select]
$date = date("Y-m-d");
$date = strtotime(date("Y-m-d", strtotime($date)) . " +30 days");
echo $date;
and I echo date I get 1330664400

How do I get it to echo out 3/1/2012?

I know the answer lies in the strtotime but I can't figure it out.  I know it's a simple problem for most of you...

Hi I am trying to add a field to a database that is 4 days from the date the record is added, but it is not adding a value

Code: [Select]
$end_date=strtotime("+ 4 days");

$add_vehicle_sql=mysql_query("INSERT INTO `tbl_auction_lot`(`cust_id`,`reserve`,`make`,`model`,`spec`,`fuel`,`doors`,`mot_date`,`fns`,`fos`,`rns`,`ros`,`condition`,`reg_no`,`service_history`,`sale_type`,`status`,`keepers`,`gearbox`,`emissions`,`colour`,`date_first_reg`,`date_manufacture`,`bhp`,`engine_size`,`end_date`)
VALUES ('$seller_id','$reserve','$make','$model','$body_style','$fuel_type','$no_of_doors','$mot','$fns','$fos','$rns','$ros','$vehicle_condition','$vrm','$service_history','auction','$status','$prev_keepers','$gearbox','$emissions','$colour','$date_reg','$date_man','$bhp','$engine_size','$end_date')") or die(mysql_error());

What am I doing wrong and what is there a better way to achieve the desired result.