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How to solve PHP error 'Notice: Array to string conversion in…'

I have a PHP file that tries to echo a $_POST and I get an error, here is the code: 5 Answers ...
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PHP array_filter with arguments

... I am not a php savy, so maybe this is an obvious question, but how can you pass in an array to array_filter and still make it work? the documentation never talks about this, except for someone's comment. – Nicola P...
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getenv() vs. $_ENV in PHP

... According to the php documentation about getenv, they are exactly the same, except that getenv will look for the variable in a case-insensitive manner. Most of the time it probably doesn't matter, but one of the comments on the documentation...
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How to change the session timeout in PHP?

I would like to extend the session timeout in php 7 Answers 7 ...
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Using braces with dynamic variable names in PHP

... Overview In PHP, you can just put an extra $ in front of a variable to make it a dynamic variable : $$variableName = $value; While I wouldn't recommend it, you could even chain this behavior : $$$$$$$$DoNotTryThisAtHomeKids = $value; Y...
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Redirect all to index.php using htaccess

I'm writing a simple PHP-based MVC-ish framework. I want this framework to be able to be installed in any directory. 7 Answ...
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How to calculate the difference between two dates using PHP?

... Use this for legacy code (PHP < 5.3). For up to date solution see jurka's answer below You can use strtotime() to convert two dates to unix time and then calculate the number of seconds between them. From this it's rather easy to calculate differ...
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Linux 进程卡住了怎么办? - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...rocess在我们使用 Linux 系统时,如果网络或者磁盘等 I O 出问题,会发现进程卡住了,即使用 kill -9 也无法杀掉进程,很多常用的调试工具,比如 strace, pstack 等也都失灵了 在我们使用 Linux 系统时,如果网络或者磁盘等 I/O 出...
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动态追踪(Dynamic Tracing)技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...在非常短的时间内,回答一些很难的关于软件系统方面的问题,从而更快速地排查和解决问题。它兴起和繁荣的一个大背景是,我们正处在一个快速增长的互联网时代,作为工程师,面临着两大方面的挑战:一是规模,不管是用...
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How to use phpexcel to read data and insert into database?

I have a php application where I want to read data from excel, Insert into database and then generate pdf reports for specific users. I searched a lot but nothing specific given about both things. ...