douyangqian5243
2014-06-14 19:09
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显示从MySQL数据库存储为BLOB数据的所有图像

I have uploaded some images to MySQL using PHP. I can also display 1 image everytime i modify the id in the HTML img tag. But now I'm trying to display all images stored in MySql database and the problem is when i use a 'While Loop' it only shows the text columns and not the images stored as BLOB data in MySQL...

I have a database called: my_db I have a table called: blob And i have 3 columns in my table: id, name & image

here is the code for the index.php:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>

<body>
<form action="index.php" method="POST" enctype="multipart/form-data">
    <input type="file" name="image"><input type="submit" name="submit" value="Upload">
</form>
<?php

if(isset($_POST['submit']))
{
    mysql_connect("127.0.0.1","root","");
    mysql_select_db("my_db");

    $imageName = mysql_real_escape_string($_FILES["image"]["name"]);
    $imageData = mysql_real_escape_string(file_get_contents($_FILES["image"]["tmp_name"]));
    $imageType = mysql_real_escape_string($_FILES["image"]["type"]);

    if(substr($imageType,0,5) == "image")
    {
        mysql_query("INSERT INTO `blob` VALUES('','$imageName','$imageData')");
        echo "Image Uploaded!";
    }
    else
    {
        echo "Only images are allowed!";
    }

}

?>

<img src="showimage.php?id=11">

</body>
</html>

And here is the code for showimage.php:

<?php

mysql_connect("127.0.0.1","root","");
mysql_select_db("my_db");

if(isset($_GET['id']))
{
    $id = mysql_real_escape_string($_GET['id']);
    $query = mysql_query("SELECT * FROM `blob` WHERE `id`='$id'");
    while($row = mysql_fetch_assoc($query))
    {
        $imageData = $row["image"];
    }
    header("content-type: image/jpeg");
    echo $imageData;
}
else
{
    echo "Error!";
}

?>

Thanks in advance :-)

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