Date into array with implode and stropos - php

Question

i have a date input javascript that lets users add as many dates onto the database at once, this is using implode and stores as one big string like 2015-01-01 2015-01-02 etc...
I also want this to find out if one of those days contains a weekend day. I have no idea how the string and date parameters meet with this.
$week_end_check = array();
$week_end_check = implode(' ',date('D'), strtotime($_POST['dates']));
if ((strpos($week_end_check,'Sun')) || (strpos($week_end_check,'Sat' ))) {
$weekend = '1';
}
the above wont work as I know but can somebody help me...you can understand what i am after by the above i hope.

Answer 1

Here's a less contrived way to do this:
$weekend = false;
foreach($_POST['dates'] as $date) {
$day = (new DateTime($date))->format('D');
if (in_array($day, array('Sun', 'Sat'))) {
$weekend = true;
break;
}
}
Set $weekend to false by default
Loop through each date
Get the day of the week
Check to see if it "Sun" or "Sat"
Set $weekend to true
End the loop once we know a weekend day has been found

Answer 2

Please use this example. .
$string = "2015-01-01 2015-01-02 2015-01-04 2015-01-06";
$array = explode(" ",$string);
$weekend_array = array();
$total = count($array);
for($i=0;$i<$count;$i++)
{
$my_day = date("D", strtotime($array[$i]));
if($my_day=="Sun" || $my_day=="Sat")
{
$weekend_array[] = $array[$i];
}
}
echo "<pre>";
print_r($weekend_array);
echo "<pre>";