Frequent question: How do you sum an array in PHP?

How do you sum in PHP?

array_sum() function in PHP

The array_sum() function returns the sum of the values in an array. The returned value can be integer or float. It returns 0 if the array is empty.

How do you sum an array?


  1. Declare and initialize an array.
  2. The variable sum will be used to calculate the sum of the elements. Initialize it to 0.
  3. Loop through the array and add each element of array to variable sum as sum = sum + arr[i].

Which one is not data type in PHP?

The special resource type is not an actual data type. It is the storing of a reference to functions and resources external to PHP. A common example of using the resource data type is a database call.

How sum is calculated in MySQL PHP?

php // Make a MySQL Connection $query = “SELECT type, SUM(price) FROM products GROUP BY type”; $result = mysql_query($query) or die(mysql_error()); // Print out result while($row = mysql_fetch_array($result)){ echo “Total “.

How do you sum an ArrayList?

I define a sum method like that in a MathUtils class, and call it like this to sum the contents of a List : // create a list List<Integer> ints = Arrays. asList(1, 2, 3); // get the sum of the elements in the list int sum = MathUtils. sum(ints);

THIS IS IMPORTANT:  How can you declare a new worker thread in node JS?

How do you sum up an array in C++?

The basic method to find the sum of all elements of the array is to loop over the elements of the array and add the element’s value to the sum variable.

How do you reverse an element in an array?

Algorithm to reverse an array

  1. Input the number of elements of an array.
  2. Input the array elements.
  3. Traverse the array from the last.
  4. Print all the elements.

What is the full form of PHP?

PHP (recursive acronym for PHP: Hypertext Preprocessor ) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.

How do I sum a query in MySQL?

The MySQL sum() function is used to return the total summed value of an expression. It returns NULL if the result set does not have any rows.

Following are the syntax of sum() function in MySQL:

  1. SELECT SUM(aggregate_expression)
  2. FROM tables.
  3. [WHERE conditions];

How do you sum a database?

The aggregate function SUM is ideal for computing the sum of a column’s values. This function is used in a SELECT statement and takes the name of the column whose values you want to sum. If you do not specify any other columns in the SELECT statement, then the sum will be calculated for all records in the table.

How do I sum a column in MySQL?


  1. If you use the SUM() function in a SELECT statement that returns no row, the SUM() function returns NULL , not zero.
  2. The DISTINCT option instructs the SUM() function to calculate the sum of only distinct values in a set.
  3. The SUM() function ignores the NULL values in the calculation.
THIS IS IMPORTANT:  Does mysql view improve performance?
Categories BD