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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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Static class initializer in PHP

I have an helper class with some static functions. All the functions in the class require a ‘heavy’ initialization function to run once (as if it were a constructor). ...
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Submitting a multidimensional array via POST with php

...u would read the previous input name after cloning, and increment by 1 manually for each input name attribute in the clone. – Daniel Nov 18 '18 at 0:04 add a comment ...
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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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Using $_POST to get select option value from HTML

... Where do I put the $selectOption = $_POST['taskOption']; I put it in the php but it does nothing.... – Yunfei Chen 2 days ago add a comment  |  ...
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可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术

...区,中断向量表等,所以它如果被中断的话,可能会出现问题,这类函数是不能运行在多任务环境下的。 可重入函数也可以这样理解,重入即表示重复进入,首先它意味着这个函数可以被中断,其次意味着它除了使用自己栈上...
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Calling closure assigned to object property directly

... As of PHP7, you can do $obj = new StdClass; $obj->fn = function($arg) { return "Hello $arg"; }; echo ($obj->fn)('World'); or use Closure::call(), though that doesn't work on a StdClass. Before PHP7, you'd have to implem...
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Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?

... is effectively just a string escaping function. It is not a magic bullet. All it will do is escape dangerous characters in order that they can be safe to use in a single query string. However, if you do not sanitise your inputs beforehand, then you will be vulnerable to certain attack vectors. Ima...
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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 Function with Optional Parameters

...wered Oct 20 '10 at 14:32 Matt BallMatt Ball 323k8585 gold badges599599 silver badges672672 bronze badges ...