How to change all negative numbers in an array to positive numbers in PHP

PHP method to turn all negative numbers in the array into positive numbers: first create a new php file and declare the file type and encoding for PHP to interact with the browser; then define an array containing negative numbers and define a for loop Traverse the array; then use the function [abs()] to change the elements in the array to positive numbers; finally run the web page to output the array.

PHP method to change all negative numbers in the array to positive numbers:

1. Create a new 252. php

2. Enter the structure of the php web page (), as shown in the figure:

3. Declare PHP and browse The file type and encoding for server interaction, as shown in the figure:

#4. Define an array $arr containing negative numbers, code: $arr = [10, -9, 3, -66];

5. Define a for loop to traverse the array. The code is as shown in the figure:

6. Use the abs() function to change the elements in the array $arr to positive numbers, and use the print_r() function to output. The code is as shown in the figure:

7, Run the web page, output the array $arr, and check whether all of them have been converted into integers, as shown in the figure:

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