大部分人的圖片上傳都是保存一個(gè)路徑到數(shù)據(jù)庫(kù)，這樣在插入時(shí)確實(shí)快，也符合web的特點(diǎn)，但是在刪除時(shí)就很麻煩，需要找到文件并刪除，該代碼能夠把代碼直接存入數(shù)據(jù)庫(kù)，刪除時(shí)一并刪除。請(qǐng)注意：這樣的話數(shù)據(jù)庫(kù)大小會(huì)激增，請(qǐng)酌情使用

表結(jié)構(gòu)

復(fù)制代碼代碼如下:

CREATE TABLE `upload` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `type` varchar(20) NOT NULL,
  `data` mediumblob NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

index.html

復(fù)制代碼代碼如下:

<!doctype html>
    <html>
<head>
    <title>
        Post-Image
    </title>
</head>
<body>
<form action="post.php" method="post" enctype="multipart/form-data">
    <input type="file" name="file" id="file"/>
    <input type="submit" value="OK"/>
</form>
</body>
</html>

post.php

復(fù)制代碼代碼如下:

<?php
if ($_FILES["file"]["error"] > 0)
{
    echo "Error: " . $_FILES["file"]["error"] . "<br />";
}
else
{
    $type = $_FILES["file"]["type"];
    $size = $_FILES['file']['size'];
    $tmp=$_FILES["file"]["tmp_name"];
    $fp = fopen($tmp,'rb');
    $data = bin2hex(fread($fp,$size));
    $dsn='mysql:host=localhost;dbname=test';
    echo '<pre>';
    try{
        $pdo = new PDO($dsn,'root','root');
        $pdo->exec("INSERT INTO `upload`(`type`,`data`) values ('$type',0x$data)");
        $id = $pdo->lastInsertId();
        echo 'upload success!<a href="view.php?id='.$id.'">View</a>';
        $pdo = null;
    }catch (PDOException $e){
        echo $e->getMessage();
    }
    echo '</pre>';
    fclose($fp);
}

view.php

復(fù)制代碼代碼如下:

<?php
$id = $_GET['id'];
if(is_numeric($id)){
    $dsn='mysql:host=localhost;dbname=test';
    try{
        $pdo = new PDO($dsn,'root','root');
        $rs = $pdo->query('select * from `upload`  where `id`='.$id);
        $row = $rs->fetchAll();
        $data = $row[0];
        header("Content-Type:${data['type']}");
        echo $data['data'];
        $pdo = null;
    }catch (PDOException $e){
        echo $e->getMessage();
    }
}else{
    exit();
}