abs() : absolute value

echo abs(-6.2); // Output 6.2
echo "<br>";
echo abs(-4); // Output 4
echo "<br>";
echo abs(3.2); // Output 3.2
echo "<br>";
echo abs(7); // Output 7

Changing all negative numbers of an array

<?Php
$a= array(1,-2,4,-7.3,105); 
$b=array_map("abs",$a); 
while (list ($key, $val) = each ($b)) { 
echo "$key -> $val <br>"; 
}
?>

0 -> 1 
1 -> 2 
2 -> 4 
3 -> 7.3 
4 -> 105

Example: Handling Negative Numbers

$num = -15;
echo abs($num);  // Output: 15

Example: Calculating Difference Between Two Numbers

$num1 = 25;
$num2 = 50;
echo abs($num1 - $num2);  // Output: 25

Questions