Group dates in a foreach loop

Question

I want to add a new line in order to group dates within a foreach loop.

Example:

2015-11-05
2015-11-05

2015-11-07

2015-11-10
2015-11-1         


        

Answer 1

One way to do this is to save the previous value and compare it to the current one:

$prev = NULL;
foreach($rows AS $row) {
    $curr = $row['datetime_published'];
    echo "$curr<br>";
    if ($curr != $prev) {
        echo '<br>';
        $prev = $curr;
    }
}

Answer 2

$temp="":
foreach($rows AS $row) {
        $my_date = $row['datetime_published'];
        echo $my_date.'<br>';
         if(strcmp($my_date,$temp)==0)
           echo '<br>';
        $temp = $my_date;

    }

Answer 3

Both answers provided by Mureinik and Subin are good. But you also have the option to do the following

1. Edit your query to something like this

SELECT datetime_published,count(*) as count,`id_visitor`,`id_category`,`datetime_published`,`datetime_edited`,`data_content` FROM table group by `datetime_published` order by `datetime_published` desc

2. Now you have an array with the dates and the count it should print these dates. Then you can print it with a 'for loop'

for ($i = 1; $i <= $row['count']; $i++) {
echo $row['datetime_published']." ".$row['data_content'] .'<br>';
}
echo "<br>";

Complete Solution spoiler

<?php

error_reporting(E_ALL);
ini_set('display_errors', 1);

$con=mysqli_connect("dbhost","dbuser","dbpass","db");
// Check connection
if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }
$sql = "SELECT datetime_published,count(*) as count FROM date group by `datetime_published` order by `datetime_published` desc";
//print $sql;
if ($result=mysqli_query($con,$sql))
  {
  // Fetch one and one row
  while ($row=mysqli_fetch_assoc($result))
    {

    $var = "select * from date where datetime_published = '".$row['datetime_published'] ."'";
    print $row['datetime_published']."<br>";
        if ($results=mysqli_query($con,$var))
        {
            // Fetch one and one row
            while ($rows=mysqli_fetch_assoc($results))
            {
            print $rows['data_subject']. " " . $rows['data_content'];
            echo "<br>";
            }
        }
    echo "<br>";
    }


}
echo "<br>";

  // Free result set
  mysqli_free_result($result);


mysqli_close($con);
?>