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Why won't my PHP app send a 404 error?

... Your code is technically correct. If you looked at the headers of that blank page, you'd see a 404 header, and other computers/programs would be able to correctly identify the response as file not found. Of course, your users are still SOL. N...
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Simplest two-way encryption using PHP

What is the simplest way of doing two way encryption in common PHP installs? 6 Answers ...
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Coalesce function for PHP?

...HP 7 introduced a real coalesce operator: echo $_GET['doesNotExist'] ?? 'fallback'; // prints 'fallback' If the value before the ?? does not exists or is null the value after the ?? is taken. The improvement over the mentioned ?: operator is, that the ?? also handles undefined variables without...
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PHP: How to send HTTP response code?

...-Code: 404', true, 404); I recommend the 2nd one. The first does work on all browsers I have tested, but some minor browsers or web crawlers may have a problem with a header line that only contains a colon. The header field name in the 2nd. variant is of course not standardized in any way and coul...
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urlencode vs rawurlencode?

...php.net/manual/en/function.rawurlencode.php) Returns a string in which all non-alphanumeric characters except -_.~ have been replaced with a percent (%) sign followed by two hex digits. This is the encoding described in » RFC 3986 for protecting literal characters from being interpreted as spec...
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Multiple file upload in php

... I'm not sure <input type="file"> allows the attribute multiple - what would the expected outcome be? Browser allowing multiple files to be selected? – Sven Oct 3 '12 at 17:41 ...
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What's the deal with a leading underscore in PHP class methods?

... { to give it some extra weight. I've never heard of developers prefacing all their methods with underscores, so I can't begin to explain what causes that. share | improve this answer | ...
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Receive JSON POST with PHP

...ontents('php://input'), true); This will save you the hassle of changing all $_POST to something else and allow you to still make normal post requests if you wish to take this line out. share | im...
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What is the best method to merge two PHP objects?

...bj_merged = (object) array_merge((array) $obj1, (array) $obj2); This actually also works when objects have methods. (tested with PHP 5.3 and 5.6) share | improve this answer | ...
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Using PHP with Socket.io

...t there are some ways to implement WebSockets. There is this jQuery plugin allowing you to use Websockets while gracefully degrading for non-supporting browsers. On the PHP side, there is this class which seems to be the most widely used for PHP WS servers. ...