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What is the difference between an interface and abstract class?

...'t do anything. It's just a pattern. For example (pseudo code): // I say all motor vehicles should look like this: interface MotorVehicle { void run(); int getFuel(); } // My team mate complies and writes vehicle looking that way class Car implements MotorVehicle { int fuel; vo...
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JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]

Is there a standard on JSON naming? I see most examples using all lower case separated by underscore, aka snake_case , but can it be used PascalCase or camelCase as well? ...
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How can I measure the speed of code written in PHP? [closed]

How can I say which class of many (which all do the same job) execute faster? is there a software to measure that? 10 Answe...
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Better way to check variable for null or empty string?

...solves it, I'm not sure if it's simpler. +1 anyway – Allain Lalonde Dec 19 '08 at 15:36 4 Since O...
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How to destroy an object?

... objects as soon as the page is served. So this should only be needed on really long loops and/or heavy intensive pages. share | improve this answer | follow |...
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What is an abstract class in PHP?

...re interface. Also interfaces are a special case of abstract classes where ALL methods are abstract. See this section of the PHP manual for further reference. share | improve this answer |...
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PHP exec() vs system() vs passthru()

... They have slightly different purposes. exec() is for calling a system command, and perhaps dealing with the output yourself. system() is for executing a system command and immediately displaying the output - presumably text. passthru() is for executing a system command which...
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What is the difference between is_a and instanceof?

...ut PHP versions >= 5.3.9 now accept an optional third boolean argument $allow_string (defaults to false) to allow comparisons of string class names instead: class MyBaseClass {} class MyExtendingClass extends MyBaseClass {} // Original behavior, evaluates to false. is_a(MyExtendingClass::class,...
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Authenticating in PHP using LDAP through Active Directory

...users through LDAP with PHP (with Active Directory being the provider). Ideally, it should be able to run on IIS 7 ( adLDAP does it on Apache). Anyone had done anything similar, with success? ...
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json_encode is returning NULL?

...ser didn't solve my problem. For those in same situation, here is how I finally handled this error: Just utf8_encode each of your results. while($row = mysql_fetch_assoc($result)){ $rows[] = array_map('utf8_encode', $row); } Hope it helps! ...