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The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead [dupl

...hy is this happening? The entire ext/mysql PHP extension, which provides all functions named with the prefix mysql_, was officially deprecated in PHP v5.5.0 and removed in PHP v7. It was originally introduced in PHP v2.0 (November 1997) for MySQL v3.20, and no new features have been added since 2...
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PHP: Storing 'objects' inside the $_SESSION

I just figured out that I can actually store objects in the $_SESSION and I find it quite cool because when I jump to another page I still have my object. Now before I start using this approach I would like to find out if it is really such a good idea or if there are potential pitfalls involved....
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Converting string to Date and DateTime

... Sadly, this answer has too many upvotes for anyone to pay attention. It's all copy paste these days. – N.B. Apr 3 '18 at 20:54  |  show 4 mor...
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How to compare two dates in php

How to compare two dates in php if dates are in format '03_01_12' and '31_12_11' . 15 Answers ...
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How can I get useful error messages in PHP?

...ple syntax error (wrong bracket, missing semicolon), or a failed function call, or something else entirely. 43 Answers ...
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How to avoid isset() and empty()

... For those interested, I have expanded this topic into a small article, which provides the below information in a somewhat better structured form: The Definitive Guide To PHP's isset And empty IMHO you should think about not just making the app "E_NOTICE compatible", but restructu...
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Your build failed due to an error in the AAPT stage, not because of an...

... - 通过该图标导航并安装 APK我正在安装一个 APK 来测试和调试: Enable Developer-Debug mode on the device Set Developer Mode 应用程序运行一段时间,然后冻结或崩溃: 内存问题:如果使用多个屏幕,请确保在切换到另一个屏幕时关闭每个...
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Redirecting from HTTP to HTTPS with PHP

... This is a good way to do it: <?php if (!(isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == 1) || isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')) { $...
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PHP: Convert any string to UTF-8 without knowing the original character set, or at least try

I have an application that deals with clients from all over the world, and, naturally, I want everything going into my databases to be UTF-8 encoded. ...
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How do I Sort a Multidimensional Array in PHP [duplicate]

...e' column in each record (or row). So you construct the $dates array (basically the same array, but with only that column), and tell the array_multisort function to sort $mdarray based on that particular column's values. – Dan Burton May 19 '10 at 18:26 ...