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推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...单，而且很多时候推荐也是很准确的。然而它也存在一些问题：
依赖于准确的用户评分；
在计算的过程中，那些大热的物品会有更大的几率被推荐给用户；
冷启动问题。当有一名新用户或者新物品进入系统时，推荐将无从依...
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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程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
程序员之网络安全系列（五）：数字证书以及12306的证书问题前文回顾假如，明明和丽丽相互不认识，明明想给丽丽写一封情书，让隔壁老王送去如何保证隔壁老王不能看到情书内容？（保密性)如何保证隔壁...前文回顾
假如，...
浅谈TCP优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的处理能力，那么接收方会出现丢包。为了避免出现此类问题，流量控制要求数据传输双方在每次交互时声明各自的接收窗口「rwnd」大小，用来表示自己最大能保存多少数据，这主要是针对接收方而言的，通俗点儿说就是让发...
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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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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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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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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How to calculate the bounding box for a given lat/lng location?
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Here is a PHP implementation from the specification found at JanMatuschek.de: github.com/anthonymartin/GeoLocation.class.php
– Anthony Martin
Dec 3 '12 at 14:10
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