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What characters are allowed in an email address?

... not appear consecutively unless quoted (e.g. John..Doe@example.com is not allowed but "John..Doe"@example.com is allowed); space and "(),:;<>@[\] characters are allowed with restrictions (they are only allowed inside a quoted string, as described in the paragraph below, and in addition, a b...
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How to force vim to syntax-highlight a file as html?

... :set syntax=<type> where <type> is something like perl, html, php, etc. There is another mechanism that can be used to control syntax highlighting called filetype, or ft for short. Similar to syntax, you give it a type like this: :set filetype=html. Other filetypes are perl, php, etc. S...
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How to remove line breaks (no characters!) from the string?

... You should be able to replace it with a preg that removes all newlines and carriage returns. The code is: preg_replace( "/\r|\n/", "", $yourString ); Even though the \n characters are not appearing, if you are getting carriage returns there is an invisible character there. The pr...
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Remove the last character from a string [duplicate]

... really great!, at least for me... i am too searching for this..and found it here... thanks +1 – Mohammed Sufian Jan 24 '14 at 21:45 ...
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Laravel: Get base url

...to('/'); App::make('url')->to('/'); Or inject the UrlGenerator: <?php namespace Vendor\Your\Class\Namespace; use Illuminate\Routing\UrlGenerator; class Classname { protected $url; public function __construct(UrlGenerator $url) { $this->url = $url; } public...
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ComponentGroup 组件组扩展:监控内容变化和批量启用禁用组件 · App Inventor 2 中文网

... ComponentGroup 扩展解决了 App Inventor 中的两个常见问题: 内容变化检测:无需使用复杂的定时器和值比较即可检测组件内容是否被修改 批量启用/禁用:一次性启用或禁用一组组件(例如在考试期间禁用输入区域) ...
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Listing only directories in UNIX

... of ls isn't used. Similar to the behaviour of ls *php and how it displays all files ending with php in a directory. – David Hancock Oct 18 '13 at 15:24 3 ...
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What does enctype='multipart/form-data' mean?

...of the URL. multipart/form-data is significantly more complicated but it allows entire files to be included in the data. An example of the result can be found in the HTML 4 specification. text/plain is introduced by HTML 5 and is useful only for debugging — from the spec: They are not reliably...
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How to test if a string is JSON or not?

I have a simple AJAX call, and the server will return either a JSON string with useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message. ...
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How do you deal with configuration files in source control?

...ns. How do you deal with this in source control? Not check in this file at all, check it with different names or do something fancy altogether? ...