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How can I prevent SQL injection in PHP?

...is way it is impossible for an attacker to inject malicious SQL. You basically have two options to achieve this: Using PDO (for any supported database driver): $stmt = $pdo->prepare('SELECT * FROM employees WHERE name = :name'); $stmt->execute([ 'name' => $name ]); foreach ($stmt as $...
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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...经常死机,登陆到终端看了一下,都是常见的 Out of memory 问题。这通常是因为某时刻应用程序大量请求 最近有位 VPS 客户抱怨 MySQL 无缘无故挂掉,还有位客户抱怨 VPS 经常死机,登陆到终端看了一下,都是常见的 Out of memory 问...
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PHP array_filter with arguments

... As an alternative to @Charles's solution using closures, you can actually find an example in the comments on the documentation page. The idea is that you create an object with the desired state ($num) and the callback method (taking $i as an argument): class LowerThanFilter { private ...
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What's the difference between echo, print, and print_r in PHP?

...s, although such usage is rare; echo is slightly faster than print. (Personally, I always use echo, never print.) var_dump prints out a detailed dump of a variable, including its type and the type of any sub-items (if it's an array or an object). print_r prints a variable in a more human-readable f...
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Unzip a file with php

...e it out by yourself. On the other hand, the fact that this code could actually be published online somewhere as the correct way to unzip a file is a bit frightening. PHP has built-in extensions for dealing with compressed files. There should be no need to use system calls for this. ZipArchivedocs ...
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Print PHP Call Stack

I'm looking for a way to print the call stack in PHP. 15 Answers 15 ...
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Apache .htaccess 禁止访问某目录方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...不愿意发生的意想不到的修改,这样就会造成服务器安全问题。这样你就必须考虑是否设置AllowOverride None来完全禁用.htaccess文件。 -------------------------------------------------------------------------- 一、开启Mod_rewrite模块 打开Apache2\co...
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Determining Referer in PHP

...s the most reliable and secure way to determine what page either sent, or called (via AJAX), the current page. I don't want to use the $_SERVER['HTTP_REFERER'] , because of the (lack of) reliability, and I need the page being called to only come from requests originating on my site. Edit: I am...
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Refresh a page using PHP

How can I refresh a page using PHP periodically? If I can not do it by PHP, what is the best recommended scenario? 13 Answe...
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How do I PHP-unserialize a jQuery-serialized form?

.... You do indeed need to parse the string that serialize returns. See the really popular answer below. – Isaac Lubow Mar 1 '19 at 2:17 add a comment  |  ...