PHP returns the sum of all values in an array

php editor Xinyi today introduces you to a practical PHP skill-how to calculate the sum of all values in the returned array. In development, it is often necessary to perform a sum operation on the values in an array. Although this operation is simple, it requires certain skills. Through the introduction of this article, you will learn how to use the array_sum() function in PHP to quickly and efficiently calculate the sum of all elements in an array, making your development work more convenient and efficient. Next, let’s take a look at the specific implementation method!

phpReturns the sum of all values in the array

There are several ways in PHP to calculate the sum of all values in an array. Here are some of the most common techniques:

1. array_sum() function

array_sum()The function can be used to calculate the sum of all values in an array. It accepts an array as argument and returns an integer result.

2. Looping and accumulation

You can use loops and accumulation to manually calculate the sum of all values in an array. The following code usesforeachto loop through each element in the array and add it to the sum:

3. reduce() function (PHP 7 and above)

Thereduce()function was introduced in PHP 7 and above, which provides a concise and powerful way to calculate the sum of all values in an array.reduce()The function accepts two parameters: a callback function and an initial value (optional). The callback function is applied to each element in the array, and the accumulator (initial value) stores the result of the calculation.

4. spl_array_sum() function

SPL (Standard PHP Library) provides thespl_array_sum()function, which is similar to thearray_sum()function, but it accepts aSplFixedArrayas argument.SplFixedArrayis a higher performance array type, often used to store large amounts of data.

Specific data type

For specific data types, PHP also provides specialized functions to calculate their sum:

• array_sum()for integer array
• array_sum()For floating point array
• array_sum()Used forstringsArrays (add string lengths)

Best Practices

• Choose the technique that best suits the data type and array size used.
• Use thearray_sum()function for general-purpose summing operations.
• For large arrays, consider using thereduce()function or thespl_array_sum()function for better performance.
• Make sure that the array contains only valid numbers, otherwise the summation result may be inaccurate.

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