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This article mainly introduces "what are the methods of PHP calculating the product of array elements". In the daily operation, I believe that many people have doubts about the method of calculating the product of array elements by PHP. I have consulted all kinds of data and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "what is the method of calculating the product of array elements by PHP?" Next, please follow the editor to study!

Through the for loop

In the previous article, "how to use the For loop and the Foreach loop in PHP", we have introduced the for loop in PHP, so we won't go into too much detail here. Let's just look at the example of how to multiply the array elements through the for loop, as shown below:

Output result:

Through the above example, we find that when there are not only numeric values in the array elements, strings such as "24" and "56" in the example are not numeric values, but will also be converted into numerical values to join the quadrature queue.

Friends who have read the previous article may have found that what is different from the previous article is not only the process of summation has changed, the variable $sum has become 1, because it is calculated by multiplication, so it has been changed to 1.

Another situation is that the elements in the array are not just numeric values, what happens if there are other strings? Let's take a look at it through an example, which is as follows:

Output result:

In the above example, the elements in the array are not only strings, but also strings with numeric elements such as "24k" and "56kg", in which case they are automatically converted to numeric values.

This is the process of quadrature of array elements through for loop. Next, let's take a look at how to do quadrature through foreach loop.

Through the foreach loop

As usual, let's take a look at the use of foreach through an example, as follows:

Output result:

As you can see from the above example, the foreach loop, like the for loop, converts string elements in the array. Let's take a look at the array_product function built into PHP.

Through the array_product function

In PHP, you can use the array_product function to calculate the quadrature of the array. The basic syntax format of the array_product function is as follows:

Array_product (array)

It is important to note that the parameter array is the array to be integrated, and the result returned after the function runs is the product of all the elements in the array. Where this element is an integer and a floating point number. If the array is empty, the result returned after PHP5.3.6 is 1.

Let's take a look at the use of the function array_product through an example, as follows:

Output result:

Therefore, we calculate the product of array elements by three methods: for loop, foreach loop and array_product function.

At this point, the study of "what are the methods for PHP to calculate the product of array elements" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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