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How to add elements to an empty array in PHP?
...ration, but it also doesn't impose the performance overhead of a function call, which array_push() would. Edit: But, great answer. Effectively the same, and majority of uses won't even notice a performance difference, but helps to know those nuances.
– Mattygabe
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Regular Expression for alphanumeric and underscores
...o or more of the given characters
$ : end of string
If you don't want to allow empty strings, use + instead of *.
As others have pointed out, some regex languages have a shorthand form for [a-zA-Z0-9_]. In the .NET regex language, you can turn on ECMAScript behavior and use \w as a shorthand (y...
Sorting an IList in C#
...ting problem today. We have a WCF web service that returns an IList. Not really a big deal until I wanted to sort it.
15 An...
Converting timestamp to time ago in PHP e.g 1 day ago, 2 days ago…
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The week part is nice but overall the function should be more flexible ($full should be a string input to filter the output as needed). e.g. time_elapsed_string($datetime, $format = "ymw"). P.S. Flat version: stackoverflow.com/a/5010169/318765
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Mail multipart/alternative vs multipart/mixed
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I hit this challenge today and I found these answers useful but not quite explicit enough for me.
Edit: Just found the Apache Commons Email that wraps this up nicely, meaning you don't need to know below.
If your requirement is an emai...
PDOException SQLSTATE[HY000] [2002] No such file or directory
...fortrabbit, but as soon as I connect to SSH to run some commands (such as php artisan migrate or php artisan db:seed ) I get an error message:
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PHP shell_exec() vs exec()
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shell_exec returns all of the output stream as a string. exec returns the last line of the output by default, but can provide all output as an array specifed as the second parameter.
See
http://php.net/manual/en/function.shell-exec.php
http:...
How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?
...HTTP header:
header('Content-Type: text/html; charset=utf-8');
Note to call this function before any output has been sent to the client. Otherwise the header has been sent too and you obviously can’t change it any more. You can check that with headers_sent. See the manual page of header for mor...
Create JSON-object the correct way
I am trying to create an JSON object out of a PHP array. The array looks like this:
5 Answers
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使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...该资产。特别是，MITVRHelper 无法使用资产文件。解决这个问题的方法是将资产文件复制到手机存储的另一部分，并让 MITVRHelper 访问副本。
更尴尬的是：标准 App Inventor 不包含复制文件的操作。幸运的是，由于 Taifun Bär（谢谢 Tai...