如何显示存储在Mysql数据库中的具有特殊日期而不是id的图像（php）

我试图在MySql中显示上传到“上传”表的图像。我已经读了很多关于如何做到这一点的书，但是运气不好

“新闻内容”表用于将新闻内容上传到Mysql，共有6列：id、标题、描述、内容、文本、日期、时间

“上传”表有5列：id、名称、大小、图像、日期

在“news_content”表中，我分别上载日期和时间列，但“upload”表中的日期列是一个与日期和时间连在一起的字符串。例如，如果在“新闻内容”表中，日期为2016年2月3日，时间为5:30，则在“上传”表中，日期为20165:30。我以这种方式组织它，以便根据相关帖子上传的特定日期和时间检索图像

我使用以下代码在news.php页面上传图像：

news.php:

// Create connection
$connection = mysql_connect("localhost","root","p206405az");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysql_error());
}
//select a database to use
$db_select = mysql_select_db( "news" , $connection) ;
    if (!$db_select) { die("Selection faild:" . mysql_error())  ;
}
//uploading the content of news and date and time
if(isset($_POST["submit"])){

    $title = $_POST["title"] ;
    $description = $_POST["description"] ;
    $content_text  =  $_POST["content_text"]  ;
    $date = $_POST["date"] ;
    $time = $_POST["time"] ;
//perform mysql query
    $result = mysql_query("INSERT INTO news_content (title, description, content_text, date, time)
        VALUES ('$title', '$description', '$content_text' ,'$date' , '$time' )")  ;

    if (!$result) {
        die("Insert failed: " . mysql_error());
        $submitMessage = "Problem with updating the post, please try again" ;

    } else if ($result){

        $submitMessage = "Your post succsessfully updated" ;
    }

}
// uploading the image
if(isset($_POST['submit']) && $_FILES['image']['size'] > 0)
{
    $fileName = $_FILES['image']['name'];
    $tmpName  = $_FILES['image']['tmp_name'];
    $fileSize = $_FILES['image']['size'];
    $fileType = $_FILES['image']['type'];
    $filedate = "$date" . "$time" ;

    $fp       = fopen($tmpName, 'r');
    $content2 = fread($fp, filesize($tmpName));
    $content3 = addslashes($content2);
    fclose($fp);

    if(!get_magic_quotes_gpc())
    {
        $fileName = addslashes($fileName);
    }

    $query = "INSERT INTO upload (name, size, type, image, date ) ".
        "VALUES ('$fileName', '$fileSize', '$fileType', '$content3', '$filedate')";

    mysql_query($query) or die('Error2, query failed');
}

// Create connection
$connection = mysql_connect("localhost","root","p206405az");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysql_error());
}
//select a database to use
$db_select = mysql_select_db( "news" , $connection) ;
if (!$db_select) { die("Selection faild:" . mysql_error())  ;
}

//perform mysql query

$result = mysql_query("SELECT * FROM news_content" , $connection);
if (!$result) {
    die("read failed: " . mysql_error());
}
//useing returned data
while ($content = mysql_fetch_array($result)){

    $date = $content["date"];
    $time = $content["time"] ;

}

$filedate = "$date" . "$time" ;

$result2 = mysql_query("SELECT image FROM upload WHERE date='$filedate'" , $connection);
if (!$result2) {
    die("read failed: " . mysql_error());
};

$row = mysql_fetch_assoc($result2);
mysql_close($connection);

header("Content-type: image/jpeg");
echo $row['image'];

<img src="getImage.php?date=<?php echo $filedate ; ?>" width="175" height="200" />

我想通过getImage.php页面检索该图像，以便稍后通过以下代码将其用作源页面，但它似乎无法检索blob数据：

另外，图片已成功上传，但我无法检索到我最近发布的具体日期

getImage.php:

// Create connection
$connection = mysql_connect("localhost","root","p206405az");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysql_error());
}
//select a database to use
$db_select = mysql_select_db( "news" , $connection) ;
    if (!$db_select) { die("Selection faild:" . mysql_error())  ;
}
//uploading the content of news and date and time
if(isset($_POST["submit"])){

    $title = $_POST["title"] ;
    $description = $_POST["description"] ;
    $content_text  =  $_POST["content_text"]  ;
    $date = $_POST["date"] ;
    $time = $_POST["time"] ;
//perform mysql query
    $result = mysql_query("INSERT INTO news_content (title, description, content_text, date, time)
        VALUES ('$title', '$description', '$content_text' ,'$date' , '$time' )")  ;

    if (!$result) {
        die("Insert failed: " . mysql_error());
        $submitMessage = "Problem with updating the post, please try again" ;

    } else if ($result){

        $submitMessage = "Your post succsessfully updated" ;
    }

}
// uploading the image
if(isset($_POST['submit']) && $_FILES['image']['size'] > 0)
{
    $fileName = $_FILES['image']['name'];
    $tmpName  = $_FILES['image']['tmp_name'];
    $fileSize = $_FILES['image']['size'];
    $fileType = $_FILES['image']['type'];
    $filedate = "$date" . "$time" ;

    $fp       = fopen($tmpName, 'r');
    $content2 = fread($fp, filesize($tmpName));
    $content3 = addslashes($content2);
    fclose($fp);

    if(!get_magic_quotes_gpc())
    {
        $fileName = addslashes($fileName);
    }

    $query = "INSERT INTO upload (name, size, type, image, date ) ".
        "VALUES ('$fileName', '$fileSize', '$fileType', '$content3', '$filedate')";

    mysql_query($query) or die('Error2, query failed');
}

// Create connection
$connection = mysql_connect("localhost","root","p206405az");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysql_error());
}
//select a database to use
$db_select = mysql_select_db( "news" , $connection) ;
if (!$db_select) { die("Selection faild:" . mysql_error())  ;
}

//perform mysql query

$result = mysql_query("SELECT * FROM news_content" , $connection);
if (!$result) {
    die("read failed: " . mysql_error());
}
//useing returned data
while ($content = mysql_fetch_array($result)){

    $date = $content["date"];
    $time = $content["time"] ;

}

$filedate = "$date" . "$time" ;

$result2 = mysql_query("SELECT image FROM upload WHERE date='$filedate'" , $connection);
if (!$result2) {
    die("read failed: " . mysql_error());
};

$row = mysql_fetch_assoc($result2);
mysql_close($connection);

header("Content-type: image/jpeg");
echo $row['image'];

<img src="getImage.php?date=<?php echo $filedate ; ?>" width="175" height="200" />

我想用以下HTML代码在index.php页面中显示图像：

index.php:

// Create connection
$connection = mysql_connect("localhost","root","p206405az");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysql_error());
}
//select a database to use
$db_select = mysql_select_db( "news" , $connection) ;
    if (!$db_select) { die("Selection faild:" . mysql_error())  ;
}
//uploading the content of news and date and time
if(isset($_POST["submit"])){

    $title = $_POST["title"] ;
    $description = $_POST["description"] ;
    $content_text  =  $_POST["content_text"]  ;
    $date = $_POST["date"] ;
    $time = $_POST["time"] ;
//perform mysql query
    $result = mysql_query("INSERT INTO news_content (title, description, content_text, date, time)
        VALUES ('$title', '$description', '$content_text' ,'$date' , '$time' )")  ;

    if (!$result) {
        die("Insert failed: " . mysql_error());
        $submitMessage = "Problem with updating the post, please try again" ;

    } else if ($result){

        $submitMessage = "Your post succsessfully updated" ;
    }

}
// uploading the image
if(isset($_POST['submit']) && $_FILES['image']['size'] > 0)
{
    $fileName = $_FILES['image']['name'];
    $tmpName  = $_FILES['image']['tmp_name'];
    $fileSize = $_FILES['image']['size'];
    $fileType = $_FILES['image']['type'];
    $filedate = "$date" . "$time" ;

    $fp       = fopen($tmpName, 'r');
    $content2 = fread($fp, filesize($tmpName));
    $content3 = addslashes($content2);
    fclose($fp);

    if(!get_magic_quotes_gpc())
    {
        $fileName = addslashes($fileName);
    }

    $query = "INSERT INTO upload (name, size, type, image, date ) ".
        "VALUES ('$fileName', '$fileSize', '$fileType', '$content3', '$filedate')";

    mysql_query($query) or die('Error2, query failed');
}

// Create connection
$connection = mysql_connect("localhost","root","p206405az");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysql_error());
}
//select a database to use
$db_select = mysql_select_db( "news" , $connection) ;
if (!$db_select) { die("Selection faild:" . mysql_error())  ;
}

//perform mysql query

$result = mysql_query("SELECT * FROM news_content" , $connection);
if (!$result) {
    die("read failed: " . mysql_error());
}
//useing returned data
while ($content = mysql_fetch_array($result)){

    $date = $content["date"];
    $time = $content["time"] ;

}

$filedate = "$date" . "$time" ;

$result2 = mysql_query("SELECT image FROM upload WHERE date='$filedate'" , $connection);
if (!$result2) {
    die("read failed: " . mysql_error());
};

$row = mysql_fetch_assoc($result2);
mysql_close($connection);

header("Content-type: image/jpeg");
echo $row['image'];

<img src="getImage.php?date=<?php echo $filedate ; ?>" width="175" height="200" />

“width=“175”height=“200”/

如何在getImage.php页面中检索该数据，然后使用该页面和源页面在index.php页面中显示该图像？ 任何帮助都将不胜感激。

要显示错误：

在页面顶部添加

error\u reporting（E\u ALL）；ini\u set（'display\u errors'，'1'）；

临时注释标题行：

标题（“内容类型：image/jpeg”）；

直接从浏览器地址栏检索图像（见下图）

如果获得“500服务器错误”，请检查Apache错误日志（即使启用了错误报告，也不会显示编译错误）

---

除非php抛出错误，否则无法找出错误。但我会将图像保存为文件，而不是db，并保留其名称（如果新闻表的行），除非每个新闻有多个图像

对于每个新闻的多示例图像，我只需将图像id与新闻id匹配

news.db的模式

id, title, description, content_text, date, time

upload.db的架构：

id, image, newsid

我的图像html链接应该是：

<img src="getImage.php?id=<?php echo $newsid; ?>" width="175" height="200" />

---

有什么错误？@fusion3k无。这就是问题所在。它只是不显示图像，而是显示一个损坏的图像标志。直接通过url（不在

标记中）和注释

header（）

命令获取图像以查看错误。@fusion3k sry你能给我一个示例吗？（在代码中）它只给我这个错误：图像”“无法显示，因为它包含错误。我应该将日期列设置为主键吗？1）使用斜杠作为分隔符不是一个好主意；2） 您是否对

标题

行进行了注释？请在下面的行中添加注释，以查看文本是否在图像之前打印。请同时检查

$filedate

变量的值：您确定它与

日期

数据库字段匹配吗？如果

date

字段是datetime格式，我认为它可能不匹配。另外：您需要一个特定的图像，但是在您的代码处理过程中，url传递的

日期在哪里？这里$GET[“id]做什么？它是GET table的id吗？如果我想通过日期列而不是id获取另一行，我应该怎么做？另一个问题是，如果我在一个数据库中有3个表，那么哪一个表的id$\u GET[“id”]获取？第一个表或第二个表或第三个表的id？这是我在类似于您的场景中提出的解决方案。请参阅上面的图像html链接代码。它将从具有图像的数据库中请求特定图像（上载表）。然后getimage.php将返回该图像（来自上载表）以html显示。