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PHP code to remove everything but numbers

...ting doesn't have anything to do with PCRE tho. Apparently (in the days before (?flags)) the people who designed/wrote the function/API thought it was a good idea to pass the regex flags with the double quoted /flags form instead of using an extra function parameter. – Qtax ...
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Do Facebook Oauth 2.0 Access Tokens Expire?

I am playing around with the Oauth 2.0 authorization in Facebook and was wondering if the access tokens Facebook passes out ever expire. If so, is there a way to request a long-life access token? ...
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Is there a constraint that restricts my generic method to numeric types?

... C# does not support this. Hejlsberg has described the reasons for not implementing the feature in an interview with Bruce Eckel: And it's not clear that the added complexity is worth the small yield that you get. If something you want to...
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Calculate age given the birth date in the format YYYYMMDD

How can I calculate an age in years, given a birth date of format YYYYMMDD? Is it possible using the Date() function? 40 ...
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How to add text to a WPF Label in code?

...find out how to add a text to a WPF Label control in code. Like following for a TextBlock: 6 Answers ...
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How to Set Focus on Input Field using JQuery

... Yes, you can write it either way. I suppose input:first might be the more formal way to write it, although it seems easier to read the other way. But maybe that's just me :) – Justin Ethier Jul 18 '11 at 20:17 ...
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How many system resources will be held for keeping 1,000,000 websocket open? [closed]

...,000,000 concurrent connections? How many system resources will be held for keeping 1,000,000 websocket open? 2 Answers ...
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Best way to determine user's locale within browser

...to auto-define a default value depending on the user's browser settings in order to minimize the steps to access the content. ...
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How to access the content of an iframe with jQuery?

...the content of an iframe with jQuery? I tried doing this, but it wouldn't work: 3 Answers ...
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How to insert element into arrays at specific position?

...ice() can be used to extract parts of the array, and the union array operator (+) can recombine the parts. $res = array_slice($array, 0, 3, true) + array("my_key" => "my_value") + array_slice($array, 3, count($array)-3, true); This example: $array = array( 'zero' => '0', 'one'...