php把上传的图保存到数据库并显示代码

php教程把上传的图保存到数据库教程并显示代码
// Connect to database

$errmsg = "";
if (! @mysql教程_connect("localhost","root","")) {
   $errmsg = "Cannot connect to database";
   }
@mysql_select_db("db1");

$q = <<<CREATE
create table pix (
    pid int primary key not null auto_increment,
    title text,
    imgdata longblob)
CREATE;
@mysql_query($q);

// Insert any new image into database

if ($_REQUEST[completed] == 1) {
   move_uploaded_file($_FILES['imagefile']['tmp_name'],"latest.img");
   $instr = fopen("latest.img","rb");
   $image = addslashes(fread($instr,filesize("latest.img")));
   if (strlen($instr) < 149000) {
      mysql_query ("insert into pix (title, imgdata) values ("".
      $_REQUEST[whatsit].
      "", "".
      $image.
      "")");
   } else {
      $errmsg = "Too large!";
   }
}

// Find out about latest image

$gotten = @mysql_query("select * from pix order by pid desc limit 1");
if ($row = @mysql_fetch_assoc($gotten)) {
   $title = htmlspecialchars($row[title]);
   $bytes = $row[imgdata];
} else {
   $errmsg = "There is no image in the database yet";
   $title = "no database image available";
   // Put up a picture of our training centre
   $instr = fopen("../wellimg/ctco.jpg","rb");
   $bytes = fread($instr,filesize("../wellimg/ctco.jpg"));
}

// If this is the image request, send out the image

if ($_REQUEST[gim] == 1) {
   header("Content-type: image/jpeg");
   print $bytes;
   exit ();
   }
?>

<html><head>
<title>Upload an image to a database</title>
<body bgcolor=white><h2>Here's the latest picture</h2>
<font color=red><?= $errmsg ?></font>
<center><img src= width=144><br>
<b><?= $title ?></center>
<hr>
<h2>Please upload a new picture and title</h2>
<form enctype="multipart/form-data" method="post">
<input type="hidden" name="MAX_FILE_SIZE" value=150000>
<input type="hidden" name="completed" value=1>
Please choose an image to upload: <input type="file" name="imagefile"><br>
Please enter the title of that picture: <input name="whatsit"><br>
then: <input type="submit"></form><br>

</body>
</html>

补充：Php教程,Php与数据库