Question

我有桌子：平台

在此表格列中：1。first_scan_date，2。next_scan_date 3. scan_frequency

现在，我从基于Web的公式得到了这样的数组：

Array
(
    [scan_freq1] => Array
        (
            [0] => 0
            [1] => 0
            [2] => 0
            [3] => 0
        )

    [first_scan_date1] => Array
        (
            [0] => 0000-00-00
            [1] => 0000-00-00
            [2] => 0000-00-00
            [3] => 0000-00-00
        )

    [next_scan_date1] => Array
        (
            [0] => 
            [1] => 
            [2] => 
            [3] => 
        )

)

如何使用来自PHP数组的内容在数据库中更新？我想我需要像foreach一样的smth，但不知道......

UPDATE平台（first_scan_date，next_scan_date，scan_frequency）VALUES（？，？，？）......

帮助？

Answer 1

尝试以下方式

$cnt = count($arr['scan_freq1']);
for($i=0;$i<$cnt;$i++){
  echo $arr['scan_freq1'][$i];
  echo $arr['first_scan_date1'][$i];
  echo $arr['next_scan_date1'][$i];

//now you have three values make query and update into db

$db->prepare(
     "UPDATE `platforms` SET `first_scan_date`=?, `next_scan_date`=?,
     `scan_frequency`= ? WHERE platformtype='os'"
 )->execute(array($arr['first_scan_date1'][$i],$arr['next_scan_date1'][$i],$arr['scan_freq1'][$i]));
}

Answer 2

我会循环遍历数组，准备一个字符串，插入一个查询中，如下所示：

$sql = "INSERT INTO table (first_scan_date,next_scan_date,scan_frequency)
VALUES ('0000-00-00','0000-00-00',1),('0000-00-00','0000-00-00',1),('0000-00-00','0000-00-00',1)
ON DUPLICATE KEY UPDATE first_scan_date=VALUES(first_scan_date),next_scan_date=VALUES(next_scan_date),scan_frequency=VALUES(scan_frequency);";

你可以这样做：

$freq = $arr['scan_freq1'];
$date1 = $arr['first_scan_date1'];
$date2 = $arr['next_scan_date1'];
foreach ($date1 as $key => $value){
    $row[] = "('".$value."','".$date2[$key]."',".$freq[$key].")";
}
$list = implode(',', $row);
$sql = "INSERT INTO table (first_scan_date,next_scan_date,scan_frequency)
VALUES ".$list."
ON DUPLICATE KEY UPDATE first_scan_date=VALUES(first_scan_date),next_scan_date=VALUES(next_scan_date),scan_frequency=VALUES(scan_frequency);";

Answer 3

这可能会晚了，但可能会在现在或将来对某人有所帮助，我相信这是实现此目标的最短途径

public function update($table,$values,$where_clause)
{
  foreach ($values as $key => $val)
  {
    $valstr[] = $key." = '$val'";
  }

 $update_query = 'UPDATE '.$table.' SET '.implode(', ', $valstr)
 ." WHERE ".$where_clause; 
  return $update_query;
}

在一个codeigniters核心文件中找到它，它只是循环遍历所有值将它们存储在数组中，然后将其转换为字符串，并将其添加到查询中，where子句排在最后。.我希望这对某人有帮助

用数组更新mysql表

3 个答案: