php教程 如何连接MS SQL Server 数据库教程

下面是连接到MSSQL服务器数据库代码。

$myServer = "localhost";
$myUser = "your_name";
$myPass = "your_password";
$myDB = "examples";

//connection to the database
$dbhandle = mssql_connect($myServer, $myUser, $myPass)
  or die("Couldn't connect to SQL Server on $myServer");

//select a database to work with
$selected = mssql_select_db($myDB, $dbhandle)
  or die("Couldn't open database $myDB");

//declare the SQL statement that will query the database
$query = "SELECT id, name, year ";
$query .= "FROM cars ";
$query .= "WHERE name='BMW'";

//execute the SQL query and return records
$result = mssql_query($query);

$numRows = mssql_num_rows($result);
echo "

" . $numRows . " Row" . ($numRows == 1 ? "" : "s") . " Returned

//display the results
while($row = mssql_fetch_array($result))
{
  echo "

DSN的主张'数据源名称'。这是一个简单的方法来分配，容易rememberable有用的数据

源的名称可能不局限于单独的数据库。如果您不知道如何建立一个系统DSN阅读我们的

教程如何建立一个系统DSN。

在下面的例子，我们将告诉你如何以一MSSQL服务器数据库DSN所谓'连接

examples.mdb'和检索所有的记录表中的'车'。

//connect to a DSN "myDSN"
$conn = odbc_connect('myDSN','','');

if ($conn)
{
  //the SQL statement that will query the database
  $query = "select * from cars";
  //perform the query
  $result=odbc_exec($conn, $query);

  echo "

  //print field name
  $colName = odbc_num_fields($result);
  for ($j=1; $j<= $colName; $j++)
  { 
    echo "

  //fetch tha data from the database
  while(odbc_fetch_row($result))
  {
    echo "

  echo " ";
  echo "

  //close the connection
  odbc_close ($conn);
}
else echo "odbc not connected";
?>
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php  如何把pdf文件转换成txt文本文件

文档格式（PDF）是一种文件格式创建的文件交换。每个PDF文件封装了一个固定布局

的2D文件的完整说明（和，与Acrobat 3D软件，嵌入式3D文件），其中包括文字，字

体，图像和二维矢量图形，撰写文件。

function pdf2text($filename) {

    // Read the data from pdf file
    $infile = @file_get_contents($filename, FILE_BINARY);
    if (empty($infile))
        return "";

    // Get all text data.
    $transformations = array();
    $texts = array();

    // Get the list of all objects.
    preg_match_all("#obj(.*)endobj#ismU", $infile, $objects);
    $objects = @$objects[1];

    // Select objects with streams.
    for ($i = 0; $i < count($objects); $i++) {
        $currentObject = $objects[$i];

        // Check if an object includes data stream.
        if (preg_match("#stream(.*)endstream#ismU", $currentObject,

$stream)) {
            $stream = ltrim($stream[1]);

            // Check object parameters and look for text data.
            $options = getObjectOptions($currentObject);
            if (!(empty($options["Length1"]) && empty($options["Type"]) &&

empty($options["Subtype"])))
                continue;

            // So, we have text data. Decode it.
            $data = getDecodedStream($stream, $options); 
            if (strlen($data)) {
                if (preg_match_all("#BT(.*)ET#ismU", $data,

$textContainers)) {
                    $textContainers = @$textContainers[1];
                    getDirtyTexts($texts, $textContainers);
                } else
                    getCharTransformations($transformations, $data);
            }
        }

    }

    // Analyze text blocks taking into account character transformations

and return results.
    return getTextUsingTransformations($texts, $transformations);
}