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is_null($x) vs $x === null in PHP [duplicate]

...someone strongly suggested that I use is_null() instead as it is specifically designed for the null-evaluation purpose. He also started talking about math or something. ...
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PHP 5 disable strict standards error

...odeMonkeyRashid I wonder why that is? probably because then the evaulation order is important? – codeling Dec 18 '13 at 22:16 ...
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PHP random string generator

... To answer this question specifically, two problems: $randstring is not in scope when you echo it. The characters are not getting concatenated together in the loop. Here's a code snippet with the corrections: function generateRandomString($length = 10)...
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In PHP, can you instantiate an object and call a method on the same line?

... @CMCDragonkai logically that makes sense; the object only exists for the duration of the statement (new Foo)->property - the value you are storing has nowhere to go because the object will no longer exist after that as it's not stored anywhe...
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Unexpected Caching of AJAX results in IE8

... a good answer, but you'll need to turn the caching off in IE9 as well. In order to target just IE8 and IE9 you could do this; <!--[if lte IE 9]> <script> $.ajaxSetup({ cache: false }); </script> <![endif]--> ...
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How can I detect if the user is on localhost in PHP?

... Which would make this actually easier to break than spoofing the IP. You should really change it. – Pekka Jan 13 '10 at 0:09 3 ...
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What is the function __construct used for?

... __construct was introduced in PHP5 and it is the right way to define your, well, constructors (in PHP4 you used the name of the class for a constructor). You are not required to define a constructor in your class, but if you wish to pass any parameters on...
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How do you remove an array element in a foreach loop?

... Note that the 3rd parameter should be ARRAY_FILTER_USE_KEY in order to pass the key as $e here. – namezero Feb 5 '18 at 12:13 ...
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Get first day of week in PHP?

... @OkiErieRinaldi You should probably open a new question in order to receive the proper attention. – JadedCore Aug 11 '15 at 12:39 ...
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How do I write unit tests in PHP? [closed]

...which is by far easier to learn - even easier than SimpleTest, it's called phpt. A primer can be found here: http://qa.php.net/write-test.php Edit: Just saw your request for sample code. Let's assume you have the following function in a file called lib.php: <?php function foo($bar) { return...