The natsort() function is an inbuilt function in PHP which is used to sort an array by using a “natural order” algorithm. The natural order tells the order to be used as a normal human being would use. … It is the array which natsort() function is going to sort.
How do I sort a string in PHP?
PHP Sorting Arrays
- sort() – sort arrays in ascending order.
- rsort() – sort arrays in descending order.
- asort() – sort associative arrays in ascending order, according to the value.
- ksort() – sort associative arrays in ascending order, according to the key.
Which of the function is used to sort an array in natural order?
The natsort() function sorts an array by using a “natural order” algorithm. The values keep their original keys.
Why do we use echo in PHP?
PHP echo statement can be used to print the string, multi-line strings, escaping characters, variable, array, etc. Some important points that you must know about the echo statement are: echo is a statement, which is used to display the output. echo can be used with or without parentheses: echo(), and echo.
What is spaceship operator PHP?
The spaceship operator is used for comparing two expressions. It returns -1, 0 or 1 when $a is respectively less than, equal to, or greater than $b . Comparisons are performed according to PHP’s usual type comparison rules.
How many types of array are available in PHP?
There are basically three types of arrays in PHP: Indexed or Numeric Arrays: An array with a numeric index where values are stored linearly. Associative Arrays: An array with a string index where instead of linear storage, each value can be assigned a specific key.
Which value equates to true in PHP?
‘a string’ == true equates to true because PHP will evaluate any non empty string to true if compared with a boolean. 0 == false equates to true because the integer 0 is evaluated as false when compared with a boolean.
What is use of empty function in PHP?
The empty() function checks whether a variable is empty or not. This function returns false if the variable exists and is not empty, otherwise it returns true.
What is difference between ECHO and print?
They are both used to output data to the screen. The differences are small: echo has no return value while print has a return value of 1 so it can be used in expressions. echo can take multiple parameters (although such usage is rare) while print can take one argument. echo is marginally faster than print .
What are loops in PHP?
PHP for loop can be used to traverse set of code for the specified number of times. It should be used if the number of iterations is known otherwise use while loop. This means for loop is used when you already know how many times you want to execute a block of code.
The setcookie() function defines a cookie to be sent along with the rest of the HTTP headers. A cookie is often used to identify a user. … With PHP, you can both create and retrieve cookie values. The name of the cookie is automatically assigned to a variable of the same name.
What is spaceship operator?
The spaceship operator or combined comparison operator is denoted by “<=>“. This is a three-way comparison operator and it can perform greater than, less than and equal comparison between two operands. … This operator can be used with integers, floats, strings, arrays, objects, etc.
What is the use of spaceship?
A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, planetary exploration, and transportation of humans and cargo.
Is null coalescing operator PHP?
Null coalescing is a new operator introduced in PHP 7. This operator returns its first operand if it is set and not NULL . Otherwise it will return its second operand.