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一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术
...事的方式，逐步告诉大家比特币提出的动机、解决了什么问题以及一些关键组件的目标和设计方案。
问题的提出
我们先从比特币产生的动机开始。
以物易物的比特村
话说在这个世界上，有一个叫比特村的小村庄，村庄共有...
deny direct access to a folder and file by htaccess
... following in your .htaccess file in your includes directory:
Satisfy all
Order deny,allow
Deny from all
I ran into this when the upper directory defined basic authentication including the line:
Satisfy any
This was preventing my deny from all to take effect because the users were authenticate...
How to check if a string starts with a specified string? [duplicate]
...-intuitive. I'd recommend editing the answer to use the regular comparison order. (There used to be a trivial reason some programmers did that for a period of time, but it's not necessary.) It's more readable and intuitive as "if (strpos($string2, 'http') === 0) ...
– orrd
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Call a REST API in PHP
...drawback is that your PHP installation must have fopen wrappers enabled in order to access URLs. If fopen wrappers is not enabled, you will not be able to use file_get_contents for Web services requests.
– Oriol
Feb 16 '15 at 1:41
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How do I uniquely identify computers visiting my web site?
...bStorage API (MDN) and browser cookies (RFC, Google Analytics).
Legal
In order to utilize tracking ids you need to add them to both your privacy policy and your terms of use preferably under the sub-heading Tracking. We will use the following keys on both document.cookie and window.localStorage:
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How to remove duplicate values from an array in PHP
...= array_unique($array, SORT_REGULAR);
Edit : SORT_REGULAR keeps the same order of the original array.
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Convert number to month name in PHP
...monthName = utf8_encode(strftime('%B', mktime(0, 0, 0, $monthNumber))); in order to display accentuated characters like in 'Août'
– Roubi
Nov 26 '18 at 1:42
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How to check for null in Twig?
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In addition, unlike the PHP isset() function, is defined will return true if a variable is defined and it's value is null.
– Pavel Petrov
Sep 19 '17 at 7:59
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Mixing a PHP variable with a string literal
...ake a look to the Variable parsing - Complex (curly) syntax section of the PHP manual.
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Can an Option in a Select tag carry multiple values?
... options in a HTML form:
(the data will be collected and processed using PHP)
15 Answers
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