How to find the sum of an array in php

php method to find the sum of an array: 1. Define a variable assigned the value "0" to store the summation result. The code is "$sum=0;"; 2. Use the "foreach" statement to loop through Array, the syntax is "foreach ($array as $value){loop statement block}"; 3. In the loop body, use the "if(is_numeric()){...}" syntax to detect whether the array element is a number, and Add the numerical elements and sum them; 4. Output the result through echo.

The operating environment of this tutorial: Windows 10 system, PHP version 8.1.3, DELL G3 computer.

php seeks array Sum 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 array

foreach ($array as $value){
    循环语句块
}

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

Step 3: In the loop body, use is_numeric() to detect whether the array elements are numbers (or numeric strings), and add and sum the numeric elements

if(is_numeric($value)){
$sum+=$value;
}

Implementation code:

<?php
header("Content-type:text/html;charset=utf-8");
$array = array("php",1,2,&#39;3&#39;,4,"hello","5",null,true,"6",7,8,"9","a"); 
var_dump($array);
$sum=0;
foreach($array as $value){
if(is_numeric($value)){
$sum+=$value;
}
}
echo "数组中数字的总和：".$sum;
?>

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