Question

我有三个变量：$ Title，$ Pubdate和$ Link

在这些变量中，有几个这样的值：

$Title = aa, bb, cc, dd, ee, ff
$Pubdate = aa, bb, cc, dd, ee, ff
$Link = aa, bb, cc, dd, ee, ff

喜欢这个。然后我有一个包含列的表（Title，Pubdate和Link）。我尝试过：

$sql = "INSERT INTO ytable (Title, Pubdate, Link) VALUES ('$Title', '$Pubdate', '$Link')";
mysql_query($sql,$db_con);

虽然没有弹出错误，但它不会执行我想要的操作。它将所有值（aa，bb，cc，dd，ee，ff）放入一列（Title）和一行（ID = 1），这意味着所有值都被压缩成一个盒子，而不是我想要的是：（
我想将它放在一列中，但是在不同的行中（1,2,3,4,5,6）。
我已经在网上搜索了答案，但是如果他们想要一个盒子中的所有值与我想要的相反，那么一切似乎都在回答。
也许是一个接一个，因此INSERT INTO ytable (Title)VALUES($Title);，它将所有值放在一列中的不同行中。

Answer 1

您将不得不将字符串拆分为数组，以便您可以“循环”它们。

/**
 * @brief Reads TIFF image
 * @param path
 * @return QImage
 */
QImage EdsImporter::readTiff(const QString &path) const {

  // Loads tiff file
  TIFF* tiff = TIFFOpen(path.toStdString().c_str(), "r");
  if (!tiff) {
    QString msg = "Failed to open TIFF: '" + path + "'";
    throw new Exception(NULL, msg, this, __FUNCTION__, __LINE__);
  }

  // Temporary variables
  uint32 width, height;
  tsize_t scanlength;

  // Read dimensions of image
  if (TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &width) != 1) {
    QString msg = "Failed to read width of TIFF: '" + path + "'";
    throw new Exception(NULL, msg, this, __FUNCTION__, __LINE__);
  }
  if (TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &height) != 1) {
    QString msg = "Failed to read height of TIFF: '" + path + "'";
    throw new Exception(NULL, msg, this, __FUNCTION__, __LINE__);
  }

  // Number of bytes in a decoded scanline
  scanlength = TIFFScanlineSize(tiff);

  QImage image(width, height, QImage::Format_RGB16);

  // TEMPORARY: Save to PNG for preview
  image.save("tiff/" + StringUtils::random() + ".png", "PNG");

  if (image.isNull() || scanlength != image.bytesPerLine()) {
    TIFFClose(tiff);
    QString msg = "Failed to create QImage from TIFF: '" + path + "'";
    throw new Exception(NULL, msg, this, __FUNCTION__, __LINE__);
  }

  // Read image data
  for (uint32 y = 0; y < height; y++) {
    TIFFReadScanline(tiff, image.scanLine(y), y);
  }
  TIFFClose(tiff);
  return image;
}

Answer 2

您可以使用循环生成查询 -

$Title   = "aa, bb, cc, dd, ee, ff";
$Pubdate = "aa, bb, cc, dd, ee, ff";
$Link    = "aa, bb, cc, dd, ee, ff";

$TitleArray   = explode(', ',$Title);
$PubdateArray = explode(', ',$Pubdate);
$LinkArray    = explode(', ',$Link);

//Either: loop through the array and build individual INSERTS
for($i=0;$i<count($TitleArray);$i++){

    // generate an INSERT for each row
    $sql = "INSERT INTO ytable (Title, Pubdate, Link) 
            VALUES ('$TitleArray[$i]', '$PubdateArray[$i]', '$LinkArray[$i]')";

}

//Or you could build a single query string inside the loop, and run it at the end.

Answer 3

您需要使用explode，implode和foreach循环。

$Title   = "aa, bb, cc, dd, ee, ff";
$Pubdate = "aa, bb, cc, dd, ee, ff";
$Link    = "aa, bb, cc, dd, ee, ff";

$Title = explode(', ', $Title);
$Pubdate = explode(', ', $Pubdate);
$Link = explode(', ', $Link);
$sql = "INSERT INTO ytable (Title, Pubdate, Link) VALUES ";
$values= array();
foreach($Title as $key => $val)
{
   $values[] = "('" . $val . "','" . $Pubdate[$key] . "','" . $link[$key] . "')";
}
$sql .= implode(',', $values);

警告：从PHP 5.5.0开始，不推荐使用MYSQL扩展，自PHP 7.0.0起，该扩展已被删除。相反，应该使用MySQLi或PDO_MySQL扩展。

Answer 4

你需要这样的东西，

$Title = "aa, bb, cc, dd, ee, ff";
$Pubdate = "aa, bb, cc, dd, ee, ff";
$Link = "aa, bb, cc, dd, ee, ff";
$titleArr = explode(",",$Title);
$pubdateeArr = explode(",",$Pubdate);
$linkArr = explode(",",$Link);

foreach($titleArr as $key => $title){
    $insertSQL = "INSERT INTO ytable (Title, Pubdate, Link) VALUES ('$title', '$pubdateeArr[$key]', '$linkArr[$key]')";
}

或者您只能迭代值

$a = array();
$insertSQL = "INSERT INTO ytable (Title, Pubdate, Link) VALUES ";

foreach($titleArr as $key => $title){
    $a[] = "('$title', '$pubdateeArr[$key]', '$linkArr[$key]')";
}
$insertSQL .= implode(",",$a);

Answer 5

您可以尝试这样的事情：

$Title = "aa, bb, cc, dd, ee, ff";
$Pubdate = "aa, bb, cc, dd, ee, ff";
$Link = "aa, bb, cc, dd, ee, ff";
$titleArr = explode(",",$Title);
$pubdateeArr = explode(",",$Pubdate);
$linkArr = explode(",",$Link);

foreach($titleArr as $key => $title){
if(!empty($title) && !empty($pubdateeArr[$key]) && !empty($linkArr[$key]))
    $insertSQL = "INSERT INTO ytable (Title, Pubdate, Link) VALUES ('$title', '$pubdateeArr[$key]', '$linkArr[$key]')";
}

我尝试过，如果不是空的，因为变量的值不能相同。

将几个值放入一列但PHP中的不同行

5 个答案: