Most Common PHP interview Questions

Hello Everyone...!!!

To become a PHP Developers is easy but to become a better PHP developer is difficult. As a web development company we have done a lot of projects and on the basis of that we have found some tips that can improve your code readability and maintainability  and make you more organized PHP developer.

Tips to become better PHP Programmer

1. Separate Configuration Files :

Instead of adding configuration settings to your script file, create a new file and include that file at the top of your script. because there is no reason to add configuration settings to your script file.Including a file makes it easy to each and every page because of a little configuration change

2. Use Comments as your Friend :

Sometimes we find it very hard  to understand our own code that has been written a while ago. So use comments to make your code easy to understand for every programmer.

3. Use Indentation and Spacing :

A well indented code with the right spacing immediately says all about you as a programmer. every programmer should be able to immediately figure out that whether a loop has ended or not by just quickly looking through your code.

4. Naming Conventions (Give your Variables Meaningful Names) :

Always give meaningful names to your variable. that means that variable name suggest the details about what type of data they store.

5. Initialize your Variables :

I know PHP automatically creates a variable at the moment you try to assign a value to it. But  it is always good practice to initialize your variables before using them. This will make your code much cleaner and make sure your variables are always the type you want them to be.

6. Using Quotes when accessing Array Keys

While accessing arrays, you might find that these both lines work:

$sName = $aNames['marc']; $sName = $aNames[marc];

Have a look at second line, here PHP is actually first trying to find a constant called “marc” and then converting “marc” to a string once no constant is found.  So you should avoid using no quotes. "if you ever create a constant with the same name, your script will stop working".

7. Stop Repeating Code :

 If you have a few lines that do the exact same thing, instead of repeating them turn them into one function or an object. This will help you when your application gets bigger and bigger.

Example :

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$a = 1; while ($a < 10) {     $b = $a * 10;     $c = $b * 2;     $d = $c * $b;     echo $d;     $a++; }

You could write this like this:

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function multiply($iVar, $iVar2) {      return ($iVar*$iVar2); } $a = 1; while ($a < 10) {     $b = multiply($a, 10);     $c = multiply($b, 2);     $d = multiply($c, $b);     echo $d;     $a++; }

8. Use Method Chaining : 

If you’re doing multiple object method calls that set variables instead your object, use method chaining to make your code simpler. To do this, just end each method with return $this; as shown below:

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class User {     function setThis($iVar) {         ....         return $this;     }     function setThis2($iVar2) {         ....         return $this;     } }

You will then be able to do method chaining:

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$oUser = new User(); $oUser->setThis(...)       ->setThis2();

We have found these things to become a better PHP developer.... "If you have more please add them also.... in comments".

 

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