How to put some numbers into an array in php

In PHP, array is a very common data type. It can be used to store multiple values ​​that can be accessed by a key. In this article, we will show you how to put some numbers into an array.

1. Create an array variable

In PHP, to create an array variable, we need to use the array() function. For example, the following code creates an array variable named $numbers and adds three numbers to it:

$numbers = array(1, 2, 3);

2. Add elements to the array

To To add elements to an array, we can use the index value of the array variable. For example, the following code adds an element to the $numbers array:

$numbers[3] = 4;

In this example, we use the index value 3 to add an element with a value of 4.

We can also use the array_push() function to add elements to the end of the array. For example, the following code adds an element with a value of 5 to the $numbers array:

array_push($numbers, 5);

In this example, we use the array_push() function to add an element with a value of 5 to the end of the array.

3. Use a loop to add elements to the array

If we have a lot of numbers to add to the array, it will be troublesome to add them one by one manually. In this case, we can use a loop to add elements to the array.

For example, the following code uses a for loop to add 10 elements to the $numbers array:

for ($i = 0; $i < 10; $i++) {
    $numbers[$i] = $i + 1;
}

In this example, we use a for loop to iterate through the numbers between 0 and 9 , and then use the loop variable $i 1 as the value of the array element. Finally, we add this value to the $numbers array.

4. Use the range() function to create an array

PHP also provides a range() function that can be used to create an array containing a series of numbers. For example, the following code uses the range() function to create an array containing 1 to 10:

$numbers = range(1, 10);

In this example, we use the range() function to create an array containing 1 to 10. Note that the range() function can accept three parameters: starting number, ending number, and step size. If the step size is not specified, it defaults to 1.

5. Use the list() function to assign array elements to variables

In PHP, we can use the list() function to assign array elements to variables. For example, the following code creates an array named $numbers and assigns its elements to three variables $a, $b, and $c:

$numbers = array(1, 2, 3);
list($a, $b, $c) = $numbers;

In this example, we use list The () function assigns the three elements of the $numbers array to the $a, $b, and $c variables respectively.

Summary

In PHP, we can create array variables using array() function and add elements to the array by index value or array_push() function. If we need to add a large number of elements, we can use a loop operation, or use the range() function to create an array containing a range of numbers. In addition, when you need to assign array elements to variables, you can use the list() function to achieve this.

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