- ceil: documentation ( source)
<?php
##-----------------------------------------------------
$processing_method= SHEETWORK;
if ($processing_method == WORKTURN) {$TTDT= (15 /60);
} elseif ($processing_method == WORKTUMBLE) {$TTDT= (15 /60);
} else($TTDT=0);
$IWUT = (2)*(8)/60;
$INKT = (2)*(8)/60;
$BWUT = (2)*(8)/60;
$PMRT = (3)*(8)/ 60;
$AWUT = (10)/60;
$MMRT = (15)/60;
$number_of_runs = ceil(4 / 4) + ceil(4 / 4) ;
$number_of_sets = ( ceil(4 / 4) + ceil(4 / 4) )* 1;
$start_up_time = $MMRT + $AWUT + $IWUT +$INKT+ $BWUT+ $PMRT + $TTDT;
$start_up_cost = ($MMRT + $AWUT + $IWUT +$INKT+ $BWUT+ $PMRT +$TTDT) * (78.21 + 15.89);
$PT = $number_of_runs * 250 * (1 + 10 / 100) / 6000;
$printing_cost = $PT * (78.21 + 15.89);
$operation_cost = $printing_cost + $start_up_cost ;
$minimum_operation_cost = 60 * 1;
if ($operation_cost <=$minimum_operation_cost) {$operation_cost = $minimum_operation_cost;
}
$operation_time = ($MMRT + $AWUT + $IWUT +$INKT+ $BWUT + $PMRT + $PT +$TTDT);
$setup_price = 8 * $plate_price ;
$running_price = ceil((250 * (4 + 4) * (4>1?2:1) )/1000) * 8;
$selling_price = $setup_price + $running_price ;