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PHP filesize MB/KB conversion [duplicate]

...and 42% more costly to be precise (depending on which if condition $bytes falls into). – Alix Axel May 25 '13 at 3:48 ...
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How to “log in” to a website using Python's Requests module?

...name and password, so we go to the login page say http://example.com/login.php now and view it's source code and search for the action URL it will be in form tag something like <form name="loginform" method="post" action="userinfo.php"> now take userinfo.php to make absolute URL which wil...
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PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?

...er using the binary protocol. In other words, the same PDO code will be equally vulnerable (or not-vulnerable) to injection attacks regardless of your EMULATE_PREPARES setting. The only difference is where the parameter replacement occurs--with EMULATE_PREPARES, it occurs in the PDO library; without...
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PHP best way to MD5 multi-dimensional array?

...ll work. md5(serialize($array)); However, it's worth noting that (ironically) json_encode performs noticeably faster: md5(json_encode($array)); In fact, the speed increase is two-fold here as (1) json_encode alone performs faster than serialize, and (2) json_encode produces a smaller string an...
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php: determine where function was called from

is there a way to find out, where a function in PHP was called from? example: 8 Answers ...
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How to update a single library with Composer?

I need to install only 1 package for my SF2 distribution (DoctrineFixtures). 8 Answers ...
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MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区,为创新赋能!

...泄露告警或控制石油管道阀门的命令,就必须要在网络有问题的情况下也要能确保发送成功。 myriota这家提供物联网数据LEO卫星传输服务的公司,流量报价是1M字节的数据500美元/月。因此,每次传输节省几个字节也能省不少...
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How to configure XAMPP to send mail from localhost?

...mail\sendmail.exe\" -t" Now Open C:\xampp\sendmail\sendmail.ini. Replace all the existing code in sendmail.ini with following code [sendmail] smtp_server=smtp.gmail.com smtp_port=587 error_logfile=error.log debug_logfile=debug.log auth_username=my-gmail-id@gmail.com auth_password=my-gmail-passwo...
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Can't use method return value in write context

... functions. However, the real problem you have is that you use empty() at all, mistakenly believing that "empty" value is any different from "false". Empty is just an alias for !isset($thing) || !$thing. When the thing you're checking always exists (in PHP results of function calls always exist), ...
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How to make a website secured with https

I have to build a small webapp for a company to maintain their business data... Only those within the company will be using it, but we are planning to host it in public domain, so that the employees can connect to app from various locations. (Till now I have built web apps that are hosted internall...