We can take an array with both negative and positive numbers. We will use array_map() built in PHP function to change all negative elements to positive by using abs function.
<?Php
$a= array(1,-2,4,-7.3,105);
$b=array_map("abs",$a);
while (list ($key, $val) = each ($b)) {
echo "$key -> $val <br>";
}
?>
Output is here.
0 -> 1
1 -> 2
2 -> 4
3 -> 7.3
4 -> 105
Questions
What does the `abs()` function in PHP do?
What is the purpose of the `abs()` function in PHP?
How do you calculate the absolute value of a number using the `abs()` function in PHP?
Does the `abs()` function return a positive or negative value?
Can you pass non-numeric values to the `abs()` function in PHP?
What happens if you pass a negative number to the `abs()` function?
How can you use the `abs()` function to calculate the absolute value of a variable in PHP?
Are there any alternative ways to calculate the absolute value of a number in PHP besides using the `abs()` function?
Can the `abs()` function be used with floating-point numbers in PHP?
What type of value does the `abs()` function return: integer or float?