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php is null or empty?

...LL) {...} Note the ===. When use ==, as you did, PHP treats NULL, false, 0, the empty string, and empty arrays as equal. share | improve this answer | follow ...
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What is the most efficient/elegant way to parse a flat table into a tree?

... Now that MySQL 8.0 supports recursive queries, we can say that all popular SQL databases support recursive queries in standard syntax. WITH RECURSIVE MyTree AS ( SELECT * FROM MyTable WHERE ParentId IS NULL UNION ALL SELECT m.* F...
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Java: parse int value from a char

... | edited Apr 30 '18 at 4:24 Neuron 3,54333 gold badges2323 silver badges4040 bronze badges a...
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How can I replace a regex substring match in Javascript?

... 140 var str = 'asd-0.testing'; var regex = /(asd-)\d(\.\w+)/; str = str.replace(regex, "$11$2"); c...
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Android: How to change CheckBox size?

... answered Jan 28 '10 at 7:36 moraesmoraes 11.8k77 gold badges4141 silver badges5858 bronze badges ...
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Automatically update version number

...ld but I'm not sure on how to enable this functionality in Visual Studio (2005/2008). I have tried to specify the AssemblyVersion as 1.0.* but it doesn't get me exactly what I want. ...
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Linear Layout and weight in Android

... answered Apr 23 '10 at 17:08 JeremyFromEarthJeremyFromEarth 14.1k44 gold badges2929 silver badges4646 bronze badges ...
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Hook up Raspberry Pi via Ethernet to laptop without router? [closed]

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Convert string with commas to array

... JSON.parse("[" + string + "]"); This gives you an Array of numbers. [0, 1] If you use .split(), you'll end up with an Array of strings. ["0", "1"] Just be aware that JSON.parse will limit you to the supported data types. If you need values like undefined or functions, you'd need to use ...
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Android studio: new project vs new module

... 102 From the documentation (Android Studio is based on Intellij IDEA) : Whatever you do in Inte...