datetime-calculate-weekend-cutoff-time.php

<?php // push delivery date forward if it is a friday, saturday or sunday. 
<section id="sect-1" class="block" style="display:table;">
  
  <article id="artc-2" style="width:48%;min-height:230px;display:block;float:right;background:#f1f7f5">
    <h4>Results</h4>
    <div><?php print( display_results() ); ?></div>
    <?php function display_results()
    {
    /**
     * procedural
     * $this_day = strtotime fri sat sun;
     */
      //$min = (60); $hour = ( 3600 ); $day = ( 86400 );
    if(isset( $_POST['submit'] ) ) 
    { 
      //date_default_timezone_set("America/New_York");
      $day_to_use = $cutoff_day = $cutoff_time = $cutoff_date = $now =''; 
      $html ='';
      $date1 = ( isset( $_POST['date1'] )) ? strtotime($_POST['date1']) : $error['0'] =true;    
      $date2 = ( isset( $_POST['date2'] )) ? strtotime($_POST['date2']) : date('now');  
      
      $now         = $date1; // simulate time.
      $select_day  = $date1; //strtotime( 'today' );
      $cutoff_time = 55740; //15 hr + 29 mins.
      $cutoff      = $select_day + $cutoff_time;
      //$convt_date1 = date( 'Y-m-d', $date1 );
      $this_fri = strtotime( 'friday this week');
      $this_sat = strtotime( 'saturday this week');
      $this_sun = strtotime( 'sunday this week');
      
    // For Next day delivery
    // check if after 15:30 or not  
    if( $now > $cutoff ) : 
        if(     $date1 == $this_fri ) {
          $day_to_use  = $date1 + ( 4 * 86400 ); // add 1 if no sat delivery
        }
        elseif( $date1 == $this_sat ) {
          $day_to_use  = $date1 + ( 3 * 86401 );
        } 
        elseif( $date1 == $this_sun ) {
          $day_to_use  = $date1 + ( 2 * 86401 );
        } else {
          $day_to_use  = $date1 + ( 2 * 86401 );
        }
    // ordered before cutoff time 
    else:
        if(     $date1 == $this_fri ) {
          $day_to_use  = $date1 + ( 1 * 86401 ); // add 1 if no sat delivery
        }
        elseif( $date1 == $this_sat ) {
          $day_to_use  = $date1 + ( 2 * 86401 );  // add 1 if no sat packaging
        } 
        elseif( $date1 == $this_sun ) {
          $day_to_use  = $date1 + ( 2 * 86401 );
        } else {
            $day_to_use = $date1 + ( 1 * 86401 );
        }
    endif;
    //$date_to_use = str_replace('/', '-', $day_to_use);
        $html .= '<p>Selected '. date( 'l F d, Y', $date1 ) .'</p>';
        $html .= '<p>UDay Selected: ' . $date1 .'</p>';
        $html .= '<p>Epoch Selected: ' . $select_day . ' Ucutoff  ' . $cutoff . '  fake now ' . $now . '</p>';
        $html .= '<p>Which date is next day to use ' . date( 'l F d, Y', $day_to_use ) . '</p>';
        $html .= '<p>Which date is next delivery ' . date( 'l F d, Y', $day_to_use ) . '</p>';

    return $html;
    
        $now = null; $day_to_use = '';
  } 
} 
?>
  </article><div class="clearfix"></div>
  <article id="artc-1" style="width:48%;display:table-cell;min-height:230px;background:#f1f5f7">
      <p><a href="<?php echo $_SERVER['PHP_SELF']; ?>">RESTART</a> </p>
    <form name="tdform" method="POST" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
    <fieldset><label for="imput_2_10">Select Date1</label>
    <div id="ui-datepicker">
      <input type="date" name="date1" class="datepicker" id="datepickerA">
        </div> 
        </fieldset>
        <fieldset><label for="imput_3_10">Select Next Date2</label>     
    <div id="uj-datepicker">
      <input type="date" name="date2" class="datepicker" id="datepickerB">
        </div> 
        </fieldset>
        <fieldset><label for="imput_4_10">Select Date</label>     
    <div id="input-field">
      <input type="submit" name="submit" class="button" id="submit">
        </div> 
        </fieldset>
    </form>

    <div id="result"><?php if(isset($result)) print($result); ?></div>
  </article>
</section>