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Null vs. False vs. 0 in PHP

...other good "nothing" entities. What is the difference, specifically in PHP? Does it have something to do with === ? 1...
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Is there a performance impact when calling ToList()?

...to store the elements of the list. Arrays cannot be extended once they are allocated so List<T> will use an over-sized array to store the elements of the list. When the List<T> grows beyond the size the underlying array a new array has to be allocated and the contents of the old array ha...
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XSLT equivalent for JSON [closed]

...ttp://www.w3.org/TR/xslt-30/#json XML uses angular brackets for delimiter tokens, JSON uses braces, square brackets, ... I. e. XML's fewer token recognition comparisons means it's optimized for declarative transformation, whereas more comparisons, being like switch statement, for speed reasons assu...
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How do I change the title of the “back” button on a Navigation Bar

...er statement. UIBarButtonItem *newBackButton = [[UIBarButtonItem alloc] initWithTitle:@"NewTitle" style:UIBarButtonItemStyleBordered target:nil action:nil]; [[self na...
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PHP Array to CSV

...SV($data); function array_to_CSV($data) { $outstream = fopen("php://output", 'r+'); fputcsv($outstream, $data, ',', '"'); rewind($outstream); $csv = fgets($outstream); fclose($outstream); return $csv; } – JohnnyFaldo ...
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How to create an array for JSON using PHP?

From PHP code I want to create an json array: 10 Answers 10 ...
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Easiest way to activate PHP and MySQL on Mac OS 10.6 (Snow Leopard), 10.7 (Lion), 10.8 (Mountain Lio

What is the easiest way to activate PHP and MySQL on Mac OS 10.6 (Snow Leopard), 10.7 (Lion), 10.8 (Mountain Lion)? 12 Answ...
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The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead [dupl

When I attempt to connect to a MySQL server from PHP, I see the following error: 1 Answer ...
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How to get current time in milliseconds in PHP?

...e in seconds since the Unix epoch accurate to the nearest microsecond (see PHP reference). It's actually very easy to test if you run the above code in a loop and display the milliseconds. – laurent Dec 18 '12 at 10:08 ...
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What do querySelectorAll and getElementsBy* methods return?

... takes a string that contains an unordered set of unique space-separated tokens representing classes. When called, the method must return a live NodeList object containing all the elements in the document that have all the classes specified in that argument, having obtained the classes by ...