PHP函數不工作，幾個參數，數組返回

Question

<?php 
function calculateTotals($column,$rowStart,$rowEnd,$boolSim) { 
$queryTotalPage = "SELECT SUM(`" . $column . "`) FROM `mylogbook` WHERE `flightNumber` >= " . $rowStart . " AND `flightNumber` <= " . $rowEnd . " AND `simulator` = " . $boolSim; 
$resultTotalPage = mysql_query($queryTotalPage) or die(mysql_error()); 
while($row = mysql_fetch_array($resultTotalPage)){ 
    $totalTimeHoursPage = floor($row["SUM(" . $column . ")"]/60); 
    $totalTimeMinutesPage = sprintf('%02d', ($row["SUM(" . $column . ")"] % 60)); 
} 
$queryTotalPreviousPages = "SELECT SUM(`" . $column . "`) FROM `mylogbook` WHERE `flightNumber` >= 1 AND `flightNumber` < " . $rowStart . " AND `simulator` = " . $boolSim; 
$resultTotalPreviousPages = mysql_query($queryTotalPreviousPages) or die(mysql_error()); 

while($row = mysql_fetch_array($resultTotalPreviousPages)){ 
    $totalTimeHoursPreviousPages = floor($row["SUM(" . $column . ")"]/60); 
    $totalTimeMinutesPreviousPages = sprintf('%02d', ($row["SUM(" . $column . ")"] % 60)); 
} 
$queryTotal = "SELECT SUM(`" . $column . "`) FROM `mylogbook` WHERE `flightNumber` >= 1 AND `flightNumber` <= " . $rowEnd . " AND `simulator` = " . $boolSim; 
$resultTotal = mysql_query($queryTotal) or die(mysql_error()); 

while($row = mysql_fetch_array($resultTotal)){ 
    $totalTimeHours = floor($row["SUM(" . $column . ")"]/60); 
    $totalTimeMinutes = sprintf('%02d', ($row["SUM(" . $column . ")"] % 60)); 
} 
return array($totalTimeHoursPage,$totalTimeMinutesPage,$totalTimeHoursPreviousPages,$totalTimeMinutesPreviousPages,$totalTimeHours,$totalTimeMinutes); 
} 
// TEST calculate totals 
echo "TEST CALC"; 
calculateTotals("timePIC","1","100","0"); 
echo $calculateTotals[0]; 
?> 

這個函數以前是單塊代碼。現在我試着將它改爲一個通用函數。沒有錯誤產生。該函數的輸出數組似乎是空的。

Answer 1

您不會將函數調用的輸出存儲到任何地方並嘗試執行echo。

，可以儲存返回的輸出一些變量（讓說，$calculateTotals），然後做echo

echo "TEST CALC"; 
$calculateTotals = calculateTotals("timePIC","1","100","0"); 
echo $calculateTotals[0]; 

這應該工作。