如何使用 PHP 7 和 MySQL 将文件从 POST 插入 longblob 列?

问题描述

我正在使用 PHP 7 和 MariaDB 5.5.47(在 CentOS 7 上)并且以下代码成功执行，没有错误:

I'm using PHP 7 and MariaDB 5.5.47 (on CentOS 7) and the following code successfully executes, with no errors:

$id = 3;
$tmp_name = $_FILES['file']['tmp_name'];
$fp = fopen($tmp_name, 'rb');

$statement = $db->prepare("INSERT INTO Foo (id, data) VALUES (?, ?)");
$statement->bindParam(1, $id);
$statement->bindParam(2, $fp, PDO::PARAM_LOB);
$statement->execute();
$statement->closeCursor();
close($fp);

使用 MySQL WorkBench 它显示数据"列是BLOB"(与 null 相反，如果我什么都不插入).当我尝试查询数据时，它是零字节.这段代码适用于 PHP 5，但我没有找到任何原因说明它不能适用于 PHP 7.

Using MySQL WorkBench it shows the "data" column is "BLOB" (as opposed to null, in the event I insert nothing). When I try to query the data, it's zero bytes. This code worked with PHP 5, but I haven't found any reason why it wouldn't work with PHP 7.

推荐答案

切换到阅读内容并将其传入工作.

Switching to reading the content and passing that in worked.

$fp = fopen($tmp_name, 'rb');
$content = fread($fp, filesize($tmp_name));
// ...
$statement->bindParam(2, $content, PDO::PARAM_LOB, $size);

但是，我在上传大于 20mb 的文件时遇到了内存错误:

However, I run into errors about memory when uploading a file that's > 20mb:

致命错误:允许的内存大小为 134217728 字节已用尽(试图分配 81606320 字节)在 /var/www/app/API/docs.php在线 498

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 81606320 bytes) in /var/www/app/API/docs.php on line 498

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