Unique Feature of PHP

Before Learning PHP we must know that PHP is a popular language and contains many features. Some of those features are common as that are provided by many programming languages like C, C++, Perl and more. Also, PHP contains unique features of its own. In this article, we are going to list some of the unique features of PHP.

S.No	Features
1.	Loosely Typed Language – PHP supports variable usage without declaring its data type. It will be taken at the time of the execution based on the type of data it has on its value.
2.	Cross Platform Compatibility – It is used to create the desktop application by using advanced PHP features.
3.	variable variables – PHP allows changing the variable name dynamically by using variable variables.
4.	Real-Time Access Monitoring – PHP provides access logging by creating the summary of recent accesses for the user.
5.	Magic Method – PHP has built in methods starts with __ (double underscore). These methods can’t be called directly. Rather, it will be called on the event basis. For example, __clone() will be called, when the clone keyword is used.
6.	Error Reporting – It has some predefined error reporting constants to generate a warning or error notice. For example, when E_STRICT is enabled, a warning about deprecated methods will be generated.
7.	Extended Regular Expression – PHP provides REGEX methods with extensive parsing and pattern matching mechanism with remarkable speed.
8.	nowdocs and heredocs String – PHP provides the nowdocs and heredocs properties are used to delimit some block of context. nowdocs and heredocs are same except the context in the heredocs allow variable parsing.
9.	Traits – PHP is a single inheritance language. The traits concept is used to cover inheritance limitation and support inheritance at multiple levels.

Comments

Build chatbot with node js and react js

User Experience is given a lot of attention while building any application these days. More and more brands are leveraging chatbots to service their customers, market their brand, and even sell their products. There are a lot of awesome tools out there which helps in building an intelligent bot very easily like Google’s DialogFlow, Amazon Lex, etc, most of which implement their own Natural Language Processing (NLP) logic. However, in some cases, we don’t really need an intelligent bot. Whenever we have a small application having a limited set of options to choose from, it’s not really necessary to use NLP based tools like Google’s DialogFlow. You need to integrate with them (which is pretty easy though), and you need to make a network call to get the results. Instead, you would want to define your rules locally in those cases. Here we will build a simple chatbot using React Simple Chatbot library and add it to our pizza-builder app using which we can build ou...

PHP Image Upload with Size Type Dimension Validation

File upload feature requires basic validations to make clean and hygienic the user input. There is a huge chance of exploiting a file upload option with malicious intent. Improper implementation of a file upload input increases security vulnerability. We need to validate the uploaded files before saving them on the server to reduce the vulnerability. I have created a HTML form and provided an option to upload files. When the form is submitted, the file binaries are sent to the PHP and validated in the server side. I have checked if the uploaded file is an image and I have specified the allowed image extension, size and dimension based on which the validation is taking place. After all these validations have passed, the image file is saved in the target location as specified. The server-side image file validation takes place in the following aspects. If the file is not empty. If the file extension is one of .jpg, .png, .jpeg. If the file size is le...

Arrays In PHP

Have you ever heard about Array.A n Array is a PHP datatype used to store a group of data into a variable. Each array item is stored as a key and value pair. Arrays are classified as “indexed array” and “associative array” based on the key specification. The Indexed array has default index starts with ‘0’ and the associative array contains the user-defined key index. The array can also be classified as “one-dimensional array” and “multi-dimensional array” based on the level of the array index. In this tutorial, we are going to see some of the important array functions in PHP. PHP Array Functions In this section, we are going to see some of the widely used PHP array functions. I explain the purpose of the array functions, the parameter it requires and the default values of the parameter. This section includes small and simple PHP code snippets to explain the usage of each array function. range(start, end) PHP range() fu...

Facts for developer

Search This Blog