我正在嘗試構建我的 foreach 循環來循環遍歷時間戳數組中的所有日期，以便我可以在每個日期的 5 個單獨的表中顯示結果這是我從數據庫獲取信息的功能$users_site = "London";$timeStampFrom = ( [0] => 1596655740 [1] => 1596745740 [2] => 1596828540 [3] => 1597087740 [4] => 1597177800 );$timeStampTo = ( [0] => 1596659340 [1] => 1596749340 [2] => 1596832140 [3] => 1597095000 [4] => 1597181400 );function show_available_equipment($users_site, $timeStampFrom, $timeStampTo){// defines db from instialize page as a global variableforeach ($timeStampFrom as $timeStampStart=>$timeStampTo) {global $db;//SQL statement to query the database for available gear$sql= "SELECT av_inventory.ID AS equipID, av_equipment_type.equipment, " . "av_inventory.product, av_inventory.serial, av_inventory.current_location, " . "av_inventory.site, av_inventory.status, av_products.product, av_buildings.building FROM av_inventory JOIN " . "av_equipment_type ON av_inventory.equipment =av_equipment_type.ID " . "JOIN av_products ON av_inventory.product = av_products.ID JOIN " . "av_buildings ON av_inventory.current_location = av_buildings.ID WHERE " . "av_inventory.site =? AND av_inventory.ID NOT IN (SELECT av_bookings.av_inventory_id FROM " . "av_bookings WHERE date_time_from <= ? and date_time_to >= ?) GROUP BY av_inventory.ID;"; // prepares our sql statement $stmt = mysqli_stmt_init($db); //if there is a SQL error exit if (!mysqli_stmt_prepare($stmt, $sql)) { header("Location: book_gear.php?error=sqlerror123"); exit(); }}}}這里我嘗試根據給定的 5 個日期顯示信息。每天一張桌子。目前我剛剛獲得第一天的信息，這讓我認為我的函數循環不正確。
1 回答
UYOU
TA貢獻1878條經驗 獲得超4個贊
在獲取SQL數據的函數中，第一次循環后返回結果：
function show_available_equipment($users_site, $timeStampFrom, $timeStampTo){
// defines db from instialize page as a global variable
foreach ($timeStampFrom as $timeStampStart=>$timeStampTo) { // <----- Only runs once
........................
//if there is a SQL error exit
if (!mysqli_stmt_prepare($stmt, $sql)) {
header("Location: book_gear.php?error=sqlerror123");
exit();
}
// otherwise go ahead
else {
...........................
$result = mysqli_stmt_get_result($stmt);
return $result; // <---------- Returns after first loop
}
}
}
從數據庫檢索每個結果后，您需要將其添加到某種$all_results變量中。循環完成后，返回$all_results。
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