add 7 day to date without weekends php code example

Example: get date excluding somedays php

<?php 

   public static function getOrderEndDate( $start_date, $orderDaysCode ){
        $saturday_off = false;
        if( $orderDaysCode == 'meal_monthly_6' ) { $orderDays = 24; }
        elseif( $orderDaysCode == 'meal_monthly_5' ) {
            $orderDays = 20;
            $saturday_off = true;
        }elseif( $orderDaysCode == 'meal_weekly' ) {
            $orderDays = 5;
            $saturday_off = true;
        }
        else{ $orderDays = 1; }   // Daily Meal

        $formatted_date = new DateTime( $start_date );

        $date_timestamp = $formatted_date->getTimestamp();
        // loop for X days
        for( $i = 0; $i < ( $orderDays - 1 ); $i++ ) {
            // get what day it is next day
            $nextDay = date('w', strtotime('+1day', $date_timestamp) );
            // if it's Sunday or Saturday get $i-1
            if( $nextDay == 0 || ( $nextDay == 6 && $saturday_off ) ) { $i--; }
            // modify timestamp, add 1 day
            $date_timestamp = strtotime('+1day', $date_timestamp);
        }

        $formatted_date->setTimestamp($date_timestamp);

        return $formatted_date->format( 'Y-m-d' );
    }

	$orderEndDate = getOrderEndDate( '2020-06-17',
                                    'meal_monthly_6' );

?>