php - Total days error -

when start date ex:6/1/2016 , end date ex : 8/1/2016

it process computational days, process result of 3 days 6/1/2016 day 7/1/2016 day 8/1/2016 day

this wrong .

must 6/1/2016 7/1/2016 day , 7/1/2016 8/1/2016 day

so sum 2 day not 3 days

 $start_date = strtotime($date_from);     $end_date   = strtotime($date_to);      $datetime1 = date_create($date_from);     $datetime2 = date_create($date_to);     $interval  = date_diff($datetime1, $datetime2);     $cs_booking_days = $interval->days;      // loop between timestamps, 24 hours @ time     $total_price = '';     $adult_price = 0;      $pricings           = get_option('cs_price_options');     $cs_offers_options  = get_option("cs_offers_options");      $pricings_array     = $pricings[$post_id];      if (isset($pricings[$post_id]['cs_plan_days'])) {         $cs_sp_days = $pricings[$post_id]['cs_plan_days'];     }      $pricing_data           = array();     $brk_counter            = 0;     $total_orignal          = 0;     $price['total_price']   = 0;     $flag                   = false;      ($i = $start_date; $i <= $end_date; $i = $i + 86400) {          $total_days++;         $brk_counter++;         $thisdate = date('y-m-d', $i); // 2010-05-01, 2010-05-02, etc         $day      = strtolower(date('d', strtotime($thisdate)));          $adult_price = $pricings_array['cs_pricing_branches']['adult_' . $day . '_price'][0];           $adult_temp_price   = $adult_price != '' ? $adult_price : 0;         $adult_price        = $adult_temp_price;         $to_check_date      = strtotime(date('y-m-d', $i)); 

<?php  // code goes here  $starttimestamp = strtotime("2016/01/06"); $endtimestamp = strtotime("2016/01/08");  $timediff = abs($endtimestamp - $starttimestamp);  $numberdays = $timediff/86400;  // 86400 seconds in 1 day  // , might want convert integer $numberdays = intval($numberdays);  echo $numberdays; 

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back code => replace

for ($i = $start_date; $i <= $end_date; $i = $i + 86400) { 

this

for ($i = $start_date; $i < $end_date; $i = $i + 86400) { 

<= problem, type <

explanation

06.01 - 08.01

first loop: $i = 06.01 , <= 08.01

second loop: $i = 07.01 , <= 08.01

third loop: $i = 08.01 , <= 08.01 - still true, sum = 3 days

after change

first loop: $i = 06.01 , < 08.01

second loop: $i = 07.01 , < 08.01

third loop: $i = 08.01 , < 08.01 - false, sum = 2 days