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How to calculate the difference between two dates using PHP?

...mponents. * If the interval doesn't have a time component (years, months, etc) * That component won't be displayed. * * @param DateInterval $interval The interval * * @return string Formatted interval string. */ function format_interval(DateInterval $interval) { $result = ""; if ($int...
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写出高质量代码的10个Tips - 更多技术 - 清泛网 - 专注C/C++及内核技术

...。 基础的数据结构与算法,掌握好这些在解决一些特定问题时,可以以更加优雅有效的方式处理。 基础的设计原则,无需完全掌握23种经典设计模式,只需要了解一些常用的设计原则即可,甚至你也可以只了解什么是低耦合,...
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mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to

...been removed in php version 7. Check $result before passing it to mysql_fetch_array. You'll find that it's false because the query failed. See the mysql_query documentation for possible return values and suggestions for how to deal with them. $username = mysql_real_escape_string($_POST['username'...
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Are global variables in PHP considered bad practice? If so, why?

...e to access values that you need, for example get_query_var() in Wordpress etc. – user2098467 Oct 23 '15 at 2:29 add a comment  |  ...
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How to fix “Headers already sent” error in PHP

...eader are: header / header_remove session_start / session_regenerate_id setcookie / setrawcookie Output can be: Unintentional: Whitespace before <?php or after ?> The UTF-8 Byte Order Mark specifically Previous error messages or notices Intentional: print, echo and other functi...
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你不得不知道的6个用好大数据的秘诀 - 资讯 - 清泛网 - 专注C/C++及内核技术

...时候,利用太复杂先进的数据分析工具往往也会带来很多问题, 不过如果我们能够通过分析大量的数据来得到最终的结果,那就不用怀疑了,你就干吧,至少方向肯定是对的。 秘诀二:要区分清楚“森林”和“树” 现在,企...
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乘着App的创业浪潮 行业短信也迎来了新生和爆发 - 资讯 - 清泛网 - 专注C/C...

...新生之后,如何提升用户体验,解决消息延迟、被拦截等问题成为了行业短信面临的最大难题。 逆势崛起:验证短信迎来脱胎换骨 毫无疑问,短信正在死亡,最具有代表性的便是拜年短信。除夕是拜年短信发送的高峰,甚至...
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LINUX下用PHPIZE安装PHP GD扩展 - PHP - 清泛IT论坛,有思想、有深度

...ir --with-jpeg-dir --with-gd sudo make make install sudo vi /app/php5/etc/php.ini  //修改PHP配置文件 extension=gd.so  //添加这一行,重启PHP服务 --------------------------------------- 安装gd,加上参数重新编译php也可以解决。 http://bbs...
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创业公司如何实施敏捷开发 - 资讯 - 清泛网 - 专注C/C++及内核技术

...这个东西并不是神器,实施了就可以解决所有软件公司的问题,而是要结合自己公司的特点和问题摸索出适合自己的一套模式。 大家都知道,创业公司刚开始需要研发出一款产品并且能够使公司赚钱的产品,不过大部分创业公...
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Best way to test for a variable's existence in PHP; isset() is clearly broken

...ng them as though they were. However, since they can be iterated, counted, etc, a missing value is not the same as one whose value is null. The answer in this case, is to use array_key_exists() instead of isset(). Since this is takes the array to check as a function argument, PHP will still raise ...