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What does the variable $this mean in PHP?

I see the variable $this in PHP all the time and I have no idea what it's used for. I've never personally used it. 10 An...
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C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术

...继承。虚继承的引入本就是为了解决复杂结构的继承体系问题。上一篇我们在讨论虚继承时用的是一个简单的继承结构,...这次我们看看菱形结构的虚继承。虚继承的引入本就是为了解决复杂结构的继承体系问题。上一篇我们在...
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Simplest way to detect a mobile device in PHP

... @kavior.com Yes it can be faked, but we should allow people to fake if they wish... because that would be their intention, why stop people from doing what they specifically want (i.e. load the desktop version for some reason in particular)? – Nick St...
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AJAX Mailchimp signup form integration

... You don't need an API key, all you have to do is plop the standard mailchimp generated form into your code ( customize the look as needed ) and in the forms "action" attribute change post?u= to post-json?u= and then at the end of the forms action appen...
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石头剪刀布 · App Inventor 2 中文网

... 这三个变量还没初始化完。放到屏幕初始化里赋值就没问题了。 最后一句 上次出招 = 石头 是个小技巧。随便指定一个初始值,玩家第一次出招后就能立刻更新矩阵, 否则得等玩满两轮才有”上一手”,代码会复杂不少。 ...
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getenv() vs. $_ENV in PHP

... According to the php documentation about getenv, they are exactly the same, except that getenv will look for the variable in a case-insensitive manner. Most of the time it probably doesn't matter, but one of the comments on the documentation...
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Is there a code obfuscator for PHP? [closed]

...of obfuscating it doesn't make it impossible to decrypt either, its just really hard to do so. – xorinzor Jul 24 '12 at 19:17 9 ...
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Safely remove migration In Laravel

... I accidentally created a migration with a bad name (command: php artisan migrate:make). I did not run (php artisan migrate) the migration, so I decided to remove it. My steps: Manually delete the migration file under app/database/mig...
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Get the full URL in PHP

...olute_url; This is a heavily modified version of http://snipplr.com/view.php?codeview&id=2734. URL structure: scheme://username:password@domain:port/path?query_string#fragment_id The parts in bold will not be included by the function Notes: This function does not include username:passwor...
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is_null($x) vs $x === null in PHP [duplicate]

...someone strongly suggested that I use is_null() instead as it is specifically designed for the null-evaluation purpose. He also started talking about math or something. ...