How to traverse and sum a one-dimensional array in php

Traverse the summation steps: 1. Define a variable assigned a value of 0 to store the summation result, the syntax "$sum=0;"; 2. Use the foreach statement to loop through the one-dimensional array, the syntax "foreach( $arr as $v){//Loop body statement block}"; 3. In the loop body, use the "=" operator to add and sum the array elements one by one, the syntax is "$sum =$v;", loop After completion, the value of "$sum" is the summation result.

The operating environment of this tutorial: windows7 system, PHP8.1 version, DELL G3 computer

php traverses one dimension Array summation method

Step 1: Define a variable assigned a value of 0 to store the summation result

$sum=0;

Step 2 : Use the foreach statement to loop through the one-dimensional array

foreach ($arr as $v){
    //循环体语句块;
}

Traverse the given $arr array, and assign the value of the current array to $v in each loop.

Step 3: In the loop body, use the "=" operator to add and sum the array elements one by one.

$sum+=$v;

After the loop ends, the value of $sum It is the summation result.

Implementation example:

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$arr = [1,2,3,4,5,6,7,8,9,10];
var_dump($arr);
$sum=0;
foreach($arr as $v){
	$sum+=$v;
}
echo "数组偶数和为：".$sum;
?>

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