如果我正确理解您的代码,您有4个表格:fuelrecords
,fuelrecords_die
,fuelrecords_pet
,fuelrecords_oil
。
的3个表fuelrecords_die
,fuelrecords_pet
,fuelrecords_oil
各有一个外键fuelrecords_id
到fuelrecords.fr_id
。
你现在要多个元组插入fuelrecords
,如果提供额外的数据,多个元组到其他3个表。我假设fuelrecords.fr_id
列是一个自动递增主键。
要插入多个元组到燃料记录中,并让它们每个都有一个新的fr_id,那么只是不要为列fr_id
传递一个值。这相当于将NULL
作为值传递。 MySQL会自动为每个元组插入唯一的连续数字。
之后,您可以拨打mysql_insert_id()
获得第一张插入的ID。使用mysql_affected_rows()
您可以获取插入元组的数量。这是获取所有最后插入的元组的id的足够信息。首先是mysql_insert_id()+0
第二个是mysql_insert_id()+1
,......,最后是mysql_insert_id()+(mysql_affected_rows()-1)
。
在下一步中,使用上述方法,再次遍历输入数据并将fuelrecords_id
插入到其他3个表的每个元组中。如果$i
是输入数据$_POST['FR_DIE_L'][$i]
(开始于$i==0
)的指数,fuelrecords_id
将mysql_insert_id()+$i
。您只能迭代到mysql_insert_id()+mysql_affected_rows()-1
,但您可能会拥有相同数量的POST数据。
一个简单得多但效率稍低的方法是只执行一个insert into fuelrecords
,然后为每个单独的POST数据对象插入其他3个表。您不必计算fuelrecords_id
,因为mysql_insert_id()
会在每次插入后为您提供正确的ID。
<?php
$wedrf=trim($_POST['FR_WE']);
list($d, $m, $y) = explode('/', $wedrf);
$mk=mktime(0, 0, 0, $m, $d, $y);
$wed_refor=strftime('%Y-%m-%d',$mk);
$row_data = array();
// shorthand for mysql_real_escape_string
function esc($value) {
return mysql_real_escape_string($value);
}
// all tuples for fuelrecords to be inserted
foreach($_POST['VEH_LIST_REG'] as $row => $VEH_LIST_REG) {
$row_data[] = "(NULL, '".esc($VEH_LIST_REG)."', '".esc($wed_refor)."')";
}
if (!empty($row_data)) {
$query = 'INSERT INTO fuelrecords(FR_ID, VEH_LIST_REG, FR_WE) VALUES '.implode(',', $row_data);
$result = mysql_query($query);
# get first fuelrecord id
$first_fuelrecords_id = mysql_insert_id();
// all tuples for the other 3 tables. insert only if data is givin.
$die_data = array();
$pet_data = array();
$oil_data = array();
foreach($_POST['VEH_LIST_REG'] as $row => $VEH_LIST_REG) {
// calculate the right fuelrecords_id for this tuple
$fuelrecords_id = (int)($first_fuelrecords_id + $row);
// insert for fuelrecords_die
if (isset($_POST['FR_DIE_L'][$row]))
{
$die_data[] = "(NULL, ".$fuelrecords_id.", '".esc($_POST['FR_DIE_L'][$row])."', '".esc($_POST['FR_DIE_C'][$row])."')";
}
// insert for fuelrecords_pet
if (isset($_POST['FR_PET_L'][$row]))
{
$pet_data[] = "(NULL, ".$fuelrecords_id.", '".esc($_POST['FR_PET_L'][$row])."', '".esc($_POST['FR_PET_C'][$row])."')";
}
// insert for fuelrecords_oil
if (isset($_POST['FR_OIL_L'][$row]))
{
$oil_data[] = "(NULL, ".$fuelrecords_id.", '".esc($_POST['FR_OIL_L'][$row])."', '".esc($_POST['FR_OIL_C'][$row])."')";
}
}
// insert the tuples into fuelrecords_die
if (!empty($die_data))
{
$sql = "INSERT INTO fuelrecords_die(FRD_ID, fuelrecords_ID, FR_DIE_L, FR_DIE_C) VALUES ".implode(',', $die_data);
$result = mysql_query($sql);
}
// insert the tuples into fuelrecords_pet
if (!empty($pet_data))
{
$sql = "INSERT INTO fuelrecords_pet(FRP_ID, fuelrecords_ID, FR_PET_L, FR_PET_C) VALUES ".implode(',', $pet_data);
$result = mysql_query($sql);
}
// insert the tuples into fuelrecords_oil
if (!empty($oil_data))
{
$sql = "INSERT INTO fuelrecords_oil(FRO_ID, fuelrecords_ID, FR_OIL_L, FR_OIL_C) VALUES ".implode(',', $oil_data);
$result = mysql_query($sql);
}
}
?>
一个小题目增加:尽量不要使用大写变量名称。大写标识符通常保留为常量:
define("MY_SHORT_PI", 3.14159265);
define("MY_CONST", "foobar");
$my_variable = "bat";
echo "I am a constant ".MY_SHORT_PI;
echo "Me too ".MY_CONST;
echo "I am a variable ".$my_variable;
这对PHP解释器没有任何影响。这只是一种常见的表示方式,让您的代码可以被其他人阅读。有很多风格指南,如the one from PEAR。
第二个示例(见注释)
<?php
$wedrf=trim($_POST['FR_WE']);
list($d, $m, $y) = explode('/', $wedrf);
$mk=mktime(0, 0, 0, $m, $d, $y);
$wed_refor=strftime('%Y-%m-%d',$mk);
// VALUES strings for fuelrecords
$row_data = array();
// temporary storage for just _L and _C values
$die_data_tmp = array();
$pet_data_tmp = array();
$oil_data_tmp = array();
// VALUES strings for the three tables
$die_data = array();
$pet_data = array();
$oil_data = array();
// shorthand for mysql_real_escape_string
function esc($value) {
return mysql_real_escape_string($value);
}
// all tuples for fuelrecords to be inserted
foreach($_POST['VEH_LIST_REG'] as $row => $VEH_LIST_REG) {
// check if diesel values are greater than 0
if (0 < (int)$_POST['FR_DIE_L'][$row] && 0 < (int)$_POST['FR_DIE_C'][$row])
$die_data_tmp[$row] = array($_POST['FR_DIE_L'][$row], $_POST['FR_DIE_C'][$row]);
// check if petrolium values are greater than 0
if (0 < (int)$_POST['FR_PET_L'][$row] && 0 < (int)$_POST['FR_PET_C'][$row])
$pet_data_tmp[$row] = array($_POST['FR_PET_L'][$row], $_POST['FR_PET_C'][$row]);
// check if oil values are greater than 0
if (0 < (int)$_POST['FR_OIL_L'][$row] && 0 < (int)$_POST['FR_OIL_C'][$row])
$oil_data_tmp[$row] = array($_POST['FR_OIL_L'][$row], $_POST['FR_OIL_C'][$row]);
// check if at least one of the 3 tables will get tuples. if not just continue
// with the next and don't assign this fuelrecord tuple to $row_data
if (! isset($die_data_tmp[$row]) && ! isset($pet_data_tmp[$row]) && ! isset($oil_data_tmp[$row]))
continue;
// all values are at least 1, so add this tuple to our inserts
$row_data[$row] = "(NULL, '".esc($VEH_LIST_REG)."', '".esc($wed_refor)."')";
}
if (!empty($row_data)) {
$query = 'INSERT INTO fuelrecords(FR_ID, VEH_LIST_REG, FR_WE) VALUES '.implode(',', $row_data);
$result = mysql_query($query);
# get first fuelrecord id
$current_fuelrecords_id = mysql_insert_id();
// all tuples for the other 3 tables. insert only if data is givin.
foreach($row_data as $row => $VEH_LIST_REG) {
// insert for fuelrecords_die
if (isset($die_data_tmp[$row]))
{
$die_data[] = "(NULL, ".$current_fuelrecords_id.", '".esc($die_data_tmp[$row][0])."', '".esc($die_data_tmp[$row][1])."')";
}
// insert for fuelrecords_pet
if (isset($pet_data_tmp[$row]))
{
$pet_data[] = "(NULL, ".$current_fuelrecords_id.", '".esc($pet_data_tmp[$row][0])."', '".esc($pet_data_tmp[$row][1])."')";
}
// insert for fuelrecords_oil
if (isset($oil_data_tmp[$row]))
{
$oil_data[] = "(NULL, ".$current_fuelrecords_id.", '".esc($oil_data_tmp[$row][0])."', '".esc($oil_data_tmp[$row][1])."')";
}
// increment the fuelrecords_id for the next tuple.
++$current_fuelrecords_id;
}
// insert the tuples into fuelrecords_die
if (!empty($die_data))
{
$sql = "INSERT INTO fuelrecords_die(FRD_ID, fuelrecords_ID, FR_DIE_L, FR_DIE_C) VALUES ".implode(',', $die_data);
$result = mysql_query($sql);
}
// insert the tuples into fuelrecords_pet
if (!empty($pet_data))
{
$sql = "INSERT INTO fuelrecords_pet(FRP_ID, fuelrecords_ID, FR_PET_L, FR_PET_C) VALUES ".implode(',', $pet_data);
$result = mysql_query($sql);
}
// insert the tuples into fuelrecords_oil
if (!empty($oil_data))
{
$sql = "INSERT INTO fuelrecords_oil(FRO_ID, fuelrecords_ID, FR_OIL_L, FR_OIL_C) VALUES ".implode(',', $oil_data);
$result = mysql_query($sql);
}
}
?>
什么都你做什么,从来没有发布与用户ID和口令代码(在这里连接mysql) – Roger 2012-03-11 11:13:07