Detailed explanation of the php array_pop() function to delete the last element in the array

php array_pop() function usage and definition?

array_pop() function is one of the PHP Array array functions. Its function is to delete the last element in the array (pop it off the stack).

PS: Stack, also known as stack, is a linear table with limited operations. The restriction is that insertion and deletion operations are only allowed at one end of the table. This end is called the top of the stack, and the other end is called the bottom. Inserting a new element into a stack is also called pushing,pushingor pushing the stack. It is to put the new element on top of the top element of the stack, making it the new top element of the stack; deleting it from a stack Elements are also calledpopor pop off the stack. It deletes the top element of the stack and makes its adjacent elements become the new top elements of the stack.

After understanding the function of php array_pop() function, let’s take a look at its syntax:

Syntax

array_pop(array)

Detailed explanation of parameters:

The array_pop() function has only one parameter array, which specifies which array to delete elements from. There will be examples below to demonstrate the return value of the

array_pop() function

It returns the last value of the array. If the array is empty, or is not an array, NULL will be returned.

Example

Use the array_pop() function to delete the last element in the array and return the deleted element. The code is as follows:

Code Run output result:

The above example uses the array_pop() function to delete the last element "blue" in the array $a. When we print out the array $a , there are only two elements in it, and the deleted element is assigned to $pop

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