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Checking if form has been submitted - PHP

What is the best way of checking whether or not a form has been submitted to determine whether I should pass the form's variables to my validation class? ...
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Make var_dump look pretty

...ns. It is extremely simple and requires no extensions, includes etc and is what I prefer. It's very easy and very fast. First just json_encode the variable in question: echo json_encode($theResult); Copy the result you get into the JSON Editor at http://jsoneditoronline.org/ just copy it into th...
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angularjs: ng-src equivalent for background-image:url(…)

...ground-image style. You could write your own directive that does exactly what you want. For example app.directive('backImg', function(){ return function(scope, element, attrs){ var url = attrs.backImg; element.css({ 'background-image': 'url(' + url +')', ...
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fatal error: malformed or corrupted AST file - Xcode

... Thanks man, this worked. But can you please explain what is all this about_ I like to know why something happens, when it does. And I just had this error when I opened my project the next day, out of the blue. – SteBra Jul 23 '14 at 8:27 ...
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What do helper and helper_method do?

... to the views provided by the controller (and it's inherited controllers). What this means is doing # application_controller.rb helper :all For Rails > 3.1 # application.rb config.action_controller.include_all_helpers = true # This is the default anyway, but worth knowing how to turn it off ...
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Truncate (not round) decimal places in SQL Server

... The answer should explain what the parameters of the function are – Tyler Sep 25 '18 at 15:59 9 ...
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How do you test that a Python function throws an exception?

... The second snipped about what to do when argument is passed was really helpful. – Sabyasachi Jun 19 '18 at 8:07 ...
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Are std::vector elements guaranteed to be contiguous?

...C, :) Actually C++03 is also called C++98-TC1 (technical corrigendum) from what i read – Johannes Schaub - litb May 11 '09 at 18:02 2 ...
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Error when trying to obtain a certificate: The specified item could not be found in the keychain

... This is insane. :( :P what the falooda??? Seriously, there needs to be some user friendly alert or message. – Adil Soomro Jan 6 '16 at 19:32 ...
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Can you autoplay HTML5 videos on the iPad?

...set the controls attribute or provide a controller using JavaScript. What this means (in terms of code) is that Javascript's play() and load() methods are inactive until the user initiates playback, unless the play() or load() method is triggered by user action (e.g. a click event). Basicall...