How to merge and sum two arrays in php

Implementation method: 1. Use the array_merge() function to merge two arrays. The syntax "array_merge(array 1, array 2)" will return a merged array containing the elements in the two arrays; 2. Use array_sum The () function calculates and returns the sum of all elements in the merged array, the syntax is "array_sum (merged array)".

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

php realizes the merging of two arrays and The sum can be seen as two parts:

• php implements the merger of two arrays

• php implements the sum of the merged arrays

Implementation steps:

Step 1: Use the array_merge() function to merge two arrays

array_merge() function is used to merge one or more arrays into one array, and will return a merged array containing two array elements

Note: If two or more array elements have the same key name, the last element will overwrite other elements.

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$a1=array(1,2,3,4,5,0);
$a2=array(6,7,8,9,10);
$arr=array_merge($a1,$a2);
var_dump($arr);
?>

Step 2: Use the array_sum() function to implement the sum of merged arrays

array_sum($arr) function can be calculated The sum of all elements in array $arr

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$a1=array(1,2,3,4,5,0);
$a2=array(6,7,8,9,10);
$arr=array_merge($a1,$a2);
var_dump($arr);
$sum=array_sum($arr);
echo "合并数组的元素总和为：".$sum;
?>

Description:

##array_sum() Function calculation array The sum of all elements in

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

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