使用php / html显示mysql blob图像 [英] mysql blob image displaying with php/html

问题描述

经过两天的搜索，我来到这里希望找到解决方案。

After two days of search I come here with the hope of finding a solution.

我实际上是在尝试将文件存储在数据库中（mysql），我知道它有多糟糕，但我们实际上需要做一个应用程序的足迹，所以我们不能用源存储它们。

I am actually trying to store files in the database (mysql), I know how bad it is, but we actually need to do a footprint of the application, so we can't store them with the sources.

我使用3个文件：

• 我的表格（经典的html / php文件）


• 从表格中按顺序处理数据的php文件将它们放入DB


• 另一个php文件，以便从数据库中获取图像，发送带有 GET 的I​​D

• my form (classic html/php file)
• a php file who process data from form in order to put them into the DB
• another php file in order to get an image from the DB, sending a ID with GET

问题在于我无法显示我的图像。

The problem is that I can't display my image.

表格 - >

<?php
    echo ('<img src="profil_pic_display.php?uid_owner=' . $dCookie['uid']. '">'); //The display line
    ?>
    <form method="POST" action="upload_profil_pic.php" enctype="multipart/form-data">
        <input type="hidden" name="MAX_FILE_SIZE" value="250000"/>
        Selectionnez une photo: <input type="file" name="avatar"/>
        <br/>
        <br/>
        <input class="ui-button" type="submit" value="Envoyer"/>
        <span><small>Formats acc&eacute;pt&eacute;s: .png/.jpeg/.jpg/.gif | Taille max: 250ko</small></span>
    </form>

处理表格中的数据 - >

<?php
require_once ('bdd.php');
require_once ('cookie.php');

$dCookie = check_cookie(1);
$maxSize = 250000;
$extensions = array('.png', '.gif', '.jpg', '.jpeg');

// On verifit que le transfert s'est bien deroule et donc que l'image est bien stocke     en tmp
if (!isset($_FILES['avatar']) || !is_uploaded_file($_FILES['avatar']['tmp_name'])) {
    echo('Probleme de transfert');
    die();
}    

$pData = $_FILES['avatar'];
$pName = basename($pData['name']);
$pType = $pData['type'];
$pSize = filesize($pData['tmp_name']);

// Verification de l'extension et de la taille
if (!in_array(strrchr($pName, '.'), $extensions) || ($pSize > $maxSize)) {
    echo('Fichier non valide.');
    die();
}
// anihilation des ' ' et des accents.
$pName = strtr($pName, 'ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïðòóôõöùúûüýÿ',      'AAAAAACEEEEIIIIOOOOOUUUUYaaaaaaceeeeiiiioooooouuuuyy');
$pName = preg_replace('/([^.a-z0-9]+)/i', '_', $pName);

//avant d'uplaoder une nouvelle image on supprime l'ancienne si il y a (en fonction de l'uid_owner
$reqCheckOldPic = $GLOBALS['bdd']->prepare('DELETE FROM num_profil_picture WHERE uid_owner   = :uid_owner;');
$reqCheckOldPic->bindParam(':uid_owner', $dCookie['uid']);
__log($dCookie['uid'], 'DELETE', array('QUERY' => $reqCheckOldPic->queryString, 'VALUE' =>    array(':uid_owner' => $dCookie['uid'])));
$reqCheckOldPic->execute();
$reqCheckOldPic->closeCursor();

// On prepare l'upload / recuperation du contenu binaire ET echappement du contenu binaire
$pBlob = file_get_contents($pData['tmp_name']);
$reqUpload = $GLOBALS['bdd']->prepare('INSERT INTO num_profil_picture (uid_owner,
                                                                    img_nom,
                                                                    img_taille,
                                                                    img_type,
                                                                    img_blob)
                                                            VALUE (:uid_owner,
                                                                    :img_nom,
                                                                    :img_taille,
                                                                    :img_type,
                                                                       :img_blob);');
$reqUpload->bindParam(':uid_owner', $dCookie['uid']);
$reqUpload->bindParam(':img_nom', $pName);
$reqUpload->bindParam(':img_taille', $pSize);
$reqUpload->bindParam(':img_type', $pType);
$reqUpload->bindParam(':img_blob', addslashes($pBlob));
__log($dCookie['uid'], 'INSERT', array('QUERY' => $reqUpload->queryString,
'VALUE' => array(
    ':uid_owner' => $dCookie['uid'],
    ':img_nom' => $pName,
    ':img_taille' => $pSize,
    ':img_type' => $pType,
        ':img_blob' => $pBlob)));
$reqUpload->execute();
$reqUpload->closeCursor();
header("Content-type: " . $pType);
echo ($pBlob);
?>

这里是显示 - >

<?php

require_once('bdd.php');
require_once('cookie.php');


$reqGetPic = $GLOBALS['bdd']->prepare('SELECT img_type, img_blob FROM num_profil_picture WHERE uid_owner = :uid_owner;');
$reqGetPic->bindParam(':uid_owner', $_GET['uid_owner']);
$reqGetPic->execute();
$pic = $reqGetPic->fetch();

header("Content-type: " . $pic[0]);
header('Content-transfer-encoding: binary');
echo ($pic[1]);
?>

推荐答案

好的，我找到了解决方案，使用数据URI。如果遇到麻烦，请访问此处获取更多信息： php：从二进制数据中重新创建并显示图像。

Ok i found out the solution, using data URI. If you are in trouble, go here for more info: php: recreate and display an image from binary data.

这篇关于使用php / html显示mysql blob图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！