PHP7 Unable to load php_curl.dll extension on windows

Problem:  

PHP Startup: Unable to load dynamic library 'C:\\php7\\ext\\php_curl.dll' - The operating system cannot run %1.\r\n in Unknown on line 0

Solution:

• Step1: Uncomment the php_curl.dll from php.ini
• Step2: Copy the following three files from php installed directory.i.e "C:\\php7".
1. libeay32.dll,
2. libssh2.dll,
3. ssleay32.dll
• Step3: Paste the files under two place
1. httpd.conf's ServerRoot directive. i.e "C\Apache24"
2. apache bin directory. i.e "C\Apache24\bin"
• Step4: Restart apache.

That's all. I solve the problem by this way.Hope it might work for you.

Mastering PHP 7: Design, configure, build, and test professional web applications

What is HTML (Hyper Text Markup Language)

• HTML stands for Hyper Text Markup Language.
• HTML is the standard markup language for creating Web pages of websites.
• HTML declare the layout structure of Web pages using markup language code.
• HTML markup are written by tags (h1, h2 for heading ,p for paragraph and so on)
• Web Browsers like Mozilla Firefox, Google Chrome , Internet Explorer etc are used to show HTML output.
• When we visit a website such as http://www.facebook.com we see the output of html code that was written for facebook.
• Web browsers render the html source code to human readable format which is displayed as images, text,multimedia contents. 
• Beside html, CSS , JavaScript are also use within a html page.

Web Browsers are Used to Show HTML Output

HTML: A Beginner's Guide, Fifth Edition

What is JavaServer Faces (JSF) in Java programming language ?

• JSF is a component-based MVC(Model View Controller) framework which enables you to completely separate Java code from HTML pages. 
• It is a new technology for developing server-side Web applications using Java.

• For example: to display a table with rows and columns you can add a table component to a page, there is no need to write html table , tr ,td tags with loop structure to show table data in JSF.

• JSF has the following parts:

• A set of user interface components(HTML tags, form, table, JSF component)
• An event-driven programming model
• A component model that enables third-party developers to supply additional components

• The application developed using JSF is easy to debug and maintain.

Core JavaServer Faces (3rd Edition)
Mastering JavaServer Faces (Java)

What do you mean by Exception handling in programming language?

• An exception is an error that occurs at run time. 
• Run time errors are errors that cause a program to terminate abnormally. 
• Run time errors occur while a program is running if the environment detects an operation that is impossible to carry out.
• Most of the well known computer programming language like Java, C++ have exception handling  mechanism by which a programmer can handle run-time errors of the program. 
• Some common exceptions are divide-by-zero or file-not-found etc.

Programming Languages
Error Types, Systematic Debugging, Exceptions

What is Inheritance in OOP(Object Oriented Programming) ?

• Inheritance is the process by which one object can acquire the properties of another object.

• In reality as Children get properties from Parents. Similarly in OOP(Object Oriented Programming) using inheritance a Child class can extends the data and member from its parent class.

• There are various types of inheritance, based on paradigm and specific language.

1. Single inheritance : Where subclasses inherit the features of one super class. A class acquires the properties of another class.  
   
2. Multiple inheritance: Where one class can have more than one super class and inherit features from all parent classes. 
   
3. Multilevel inheritance : Where a subclass is inherited from another subclass. Hierarchical inheritance: Where one class serves as a superclass (base class) for more than one sub class. 
   
4. Hybrid inheritance: a mix of two or more of the above types of inheritance.

Object-Oriented Programming in C++ (4th Edition)
Object-Oriented Programming for Dummies

What is Polymorphism in OOP ?

• Polymorphism (from Greek, meaning “many forms”) is the mechanism that allows one interface/method/function/procedure to access a general class of actions.  
• More generally, the concept of polymorphism is often expressed by the phrase “one interface,  multiple methods.” 
• This means that it is possible to design a generic interface to a group of related activities.

• Polymorphism helps reduce complexity by allowing the same interface to be used to specify a general class of action.

Sams Teach Yourself C++ in One Hour a Day (7th Edition)

What do you mean by encapsulation in OOP ?

• Encapsulation is a programming mechanism that binds together code and the data it manipulates and apply restricting access to some of the object's components. 

• In an object-oriented language, it is a language construct that facilitates the bundling of data with the methods or other functions operating on that data. 

• Class (extensible program-code-template for creating objects) is used to ensure encapsulation of data and method in Object Oriented Programming.

Intro to Java Programming, Comprehensive Version (10th Edition)
Java: How to Program, 9th Edition (Deitel)

What is Java Bytecode ?

• When a Java program source is compiled, the output of the Java compiler is called bytecode. 
• Many language generate executable code after compilation. 
• In Java the output is converted to a special type of file which is called the bytecode.
• Bytecode is a highly optimized set of instructions designed to be executed by the Java run-time system,which is called the Java Virtual Machine (JVM). 
• Bytecode makes it much easier to run a program in  a wide variety of environments because only the JVM needs to be implemented for each  platform.

Java: A Beginner's Guide, Seventh Edition

How to redirect your website from HTTP to HTTPS on Apache HTTP Web Server

• You can automatically redirect your website visitor from http://www.yourwebsite.com  to https://www.yourwebsite.com  in various ways. 
• This blog post will show you how to redirect your website from http to https using a simple .htaccess file saved on your web server.
• Step 1: Install & configure mod_ssl on your Apache HTTP Server.
• Step 2: Enable the mod_rewrite modules by editing the ‘httpd.conf’ apache configuration file.
• Step 3: create an ‘.htaccess’ file and write the following code on that .htaccess file & save the file on your web server document root directory.   

  

 RewriteEngine On
 RewriteCond %{HTTPS} off
 RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

• Step 4: That’s all. Now your website will always redirect from http://www.yourwebsite.com  to https://www.yourwebsite.com 

Pro Apache (Expert's Voice)

WordPress theme & plugins installation “Download failed” problem solved

• If you are getting an error message while tried to install any WordPress theme or plug-ins from wordpress admin panel. If the error message says “Download failed. There are no HTTP transports available which can complete the requested request.”. Then this post might help you. 

• Step1:  You have to edit your php.ini file, so find the php.ini file & open it with notepad.

• Step2: Find “php_curl” extension on the php.ini file

• Step3: After finding, now enable the php_curl extension by removing the semicolon (;) 

• Step4: save the php.ini file & close it
• Step5: Restart the apache service.
• Step6: It’s done. 
• Now you can download any wordpress themes & plugins from wordpress admin panel.

WordPress All-in-One For Dummies