PHP is a server-side scripting language, its abbreviation is PHP: Hypertext Preprocessor. It was created by programmer Rasmus Lerdorf in 1995. The first version was released on 8 June 1995. PHP’s latest version is 8.2 which was released on 24 November 2022.
We can remove all empty values from the array using array_filter() and array_diff() functions which allow us to remove all empty elements.
The ternary operator is a shortened way to write conditional expressions. It is also known as conditional operator. It helps to reduce the code length.
There are several types of errors in PHP that occurs when something is wrong in the PHP code. Understanding these error types is very important for PHP developers.
We can use the PHP built-in function isset() in conjunction with an if statement to check whether a cookie is set or not.
Increment and decrement operators are called unary operators because they work on a single operand.
In PHP, we can use password_hash() and md5() functions to securely hash and encrypt passwords.
We can print the current date, time, and day with the help of the date() function. It prints the data related to the date based on arguments.
The Logical Operator is mainly used in PHP to perform logical operations on one or more expressions.
To get the length of an array in PHP with the help of the count() function. It counts the array’s element and returns the total count.
The comparison operator is mainly used in PHP to compare one variable value with another. These values can be strings or numbers.
We use arithmetic operators in PHP to perform simple mathematical operations. As like addition, subtraction, multiplication, division, exponentiation, and modulus operations.
Variables inside the function’s parentheses are called parameters. These are used to pass the executable values in the function. Parameters are like placeholders for the values you want to work with inside the function.
To create the function we use the function keyword along with the function’s name. It can be any name that should be before the parenthesis ().
To set the timezone in PHP, we can use the date_default_timezone_set() function. It is used to set the default timezone used by all date/time.
The concatenation operator (‘.’) is mostly used in PHP to concatenate the strings. We can concatenate any kind of value through the operator.
We can use PHP built-in function strtotime() and format() method from the DateTime class to convert the date format into another.
We can use the ‘REMOTE_ADDR’ from the super global variable $_SERVER to get the client’s IP address.
In PHP, we can delete an element from an array in multiple ways.
Traits allow you to declare methods that can be used in multiple classes. It means if you declare a method in the trait, you can use it in multiple classes.
The static method can be directly called through Scope Resolution Operator (::), which means there is no need to create an instance of the class.
The interface allows you to declare public methods that a class should implement. It means, when you implement an Interface into a class then it has to implement all the methods that are declared in the Interface.
Abstract classes are a powerful concept in object-oriented programming. They are used to define abstract representational and behavioral combinations, which means they cannot be instantiated without being subclassed.
In PHP, superglobal variables are accessible anywhere in the function, class, and PHP file or script.
In PHP, the strtolower() function converts all the characters into lowercase. In PHP, the strtolower() function converts all the characters into lowercase.
In PHP, the strtoupper() function converts all the characters into uppercase. In PHP, the strtoupper() function converts all the characters into uppercase.
In PHP, the ucwords() function converts the first letter of each word into uppercase. It takes one required parameter.
The array_push() is a built-in function that pushes elements into the array. It accepts the first parameter as an array in which a new element has to be added.
The str_word_count() function counts the word of the provided string and returns the result in an integer.
The strlen() function is used to find the length of a string PHP. It takes a string as a parameter and returns the length in an integer.
PHP 8 built-in function str_ends_with() accepts two parameters and checks if the second parameter’s position is at the end of the first parameter.
The str_starts_with() function checks if the string starts with the provided string, in other words we can say it checks if a sentence or phrase starts with a specific word or an alphabet letter.
The str_contains() function helps to search the string into another, or for easy understanding, it searches a word, letter or phrase in the sentence.
here are two available ways in PHP for converting float value into integer, in which first is the intval() function and (int).
A string value can be converted into an integer value through type casting or intval() function in PHP.