Getting an image from a database using PHP
first time using stack overflow.
I have followed the following 2 part youtube tutorial on uploading/storing an image in a MYSQL database. I have followed the instructions but my image is not appearing for me. I use connect.php to connect to the database, this appears to be working fine. It seems the problem is with get.php as when I test echoing any images from it I always get no image. used phpmyadmin to create the database and am using xampp.
here is the link to the youtube tutorials
http://www.youtube.com/watch?v=CxY3FR9doHI
http://www.youtube.com/watch?v=vFZfJZ_WNC4&feature=fvwrel
Included are the files
<html>
<head>
<title>Upload an image</title>
</head>
<body>
<form action="index.php" method="POST" enctype="multipart/form-data">
File:
<input type="file" name="image"> <input type="submit" value="Upload">
</form>
<?php
include 'connect.php';
//file properties
$file = $_FILES['image']['tmp_name'];
if(!isset($file))
echo "Please select an image.";
else{
$image = addslashes(file_get_contents($_FILES['image']['tmp_name']));
$image_name=addslashes($_FILES['image']['name']);
$image_size = getimagesize($_FILES['image']['tmp_name']);
if ($image_size==FALSE)
echo "That's not an image.";
else{
if(!$insert = mysql_query("INSERT INTO store VALUES('','$image_name','$image')"))
echo"Problem uploading image";
else{
$lastid = mysql_insert_id();
echo "image uploaded.<p />your image:<p /><img src=get.php?id=$lastid>";
开发者_开发问答 }
}
}
?>
</body>
</html>
Here is get.php
<?php
include 'connect.php';
$id=stripslashes($_REQUEST('id'));
$image = mysql_query("SELECT * FROM store WHERE id=$id");
$image = mysql_fetch_assoc($image);
$image=$image('image');
header("content-type: image/jpeg");
?>
And finally connect
<?php
// connect to database
$db_host="localhost";
$db_username="root";
$db_pass="";
$db_name="test";
@mysql_connect("$db_host","$db_username","$db_pass") or die("Could not connect to mysql");
mysql_select_db("$db_name")or die("Cant find database");
?>
Your get.php doesn't echo $image.
Also $image=$image('image'); should be $image=$image['image'];, and $_REQUEST('id') should be $_REQUEST['id'].
P.S. Don't use addslashes to prevent against SQL injections. Use mysql_real_escape_string.
You never echo the image data in get.php, so you're serving a blank 0-byte image.
You are missing a line after the header output
header("content-type: image/jpeg");
echo $image;
Very quick glance, in get.php change:
$image=$image('image');
to
$image=$image['image'];
mysql_fetch_assoc() converts the results into an array.
You better of bas64_encoding an decoding that way none ansi chars wont create a problem.
base64_encode(file_get_contents($_FILES['image']['tmp_name']));
This is wrong as array is [] not () include 'connect.php';
$id=stripslashes($_REQUEST('id'));
$image = mysql_query("SELECT * FROM store WHERE id=$id");
$image = mysql_fetch_assoc($image);
$image=$image['image'];
header("content-type: image/jpeg");
echo base64_decode($image);
Piece of code I use in a site of mine:
<?php
ob_start();
require_once("db.php.lib");
DBLogin();
$sql = "select pic_user_id, pic_full_data as bindata, pic_full_mime as mime, pic_full_size as size from pics where pic_name = '".urldecode($_GET["pic_name"])."'";
$result = DBExec($sql);
if ($result)
{
$row = DBGetNextRow($result);
if ($row)
{
header("Content-type: ".$row["mime"]);
header("Content-length: ".$row["size"]);
ob_clean();
echo $row["bindata"];
ob_end_flush();
}
}
?>
It looks like you're leaving out the actual output of the image data, and the length might be required by some browsers...
加载中,请稍侯......
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