How to calculate the product and sum of php arrays

How to calculate the product and sum of PHP arrays: 1. Use array_product() to calculate the product of all elements in the array, the syntax is "array_product($arr)"; 2. Use array_sum() to calculate The sum of all elements of an array, syntax "array_sum($arr)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php array calculation product and summation methods

PHP has two built-in functions that can calculate array products and sums. Let’s take a look.

1. Use the array_product() function to calculate the array product

array_product() function is used to calculate the product of all elements in the array

array_product ($arr)

• If all elements of array arr are integers, return an integer value; if one or more of the values are floating point numbers, return a floating point number.

• If there are non-numeric elements in the array arr, PHP will try to convert them to a numeric value, and if the conversion fails, it will be treated as a 0 value. For example, the string "29.5" will be converted to the decimal 29.5, and the string "100abc" will be converted to the integer 100.

Example:

"; $b = array(2, 5.5, "10abc", "3.3"); echo array_product($b) . "
"; $c = array(4, 3.5, "0.1", "hello"); echo array_product($c); ?>

2. Use array_sum() to implement array summation

array_sum() function is used to calculate the sum of all elements in an array. Its syntax is as follows:

array_sum ( $arr )

• If all elements of array arr are integers, return an integer value; if If one or more of the values is a floating point number, a floating point number is returned.

• If there are non-numeric elements in the array arr, PHP will try to convert them to a numeric value, and if the conversion fails, it will be treated as a 0 value. For example, the string "45" will be converted to the integer 45, and the string "12.4abc" will be converted to the decimal 12.4.

Example:

"; $b = array("10.1xy", 100, '1', "0.01"); echo array_sum($b); ?>

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of How to calculate the product and sum of php arrays. For more information, please follow other related articles on the PHP Chinese website!