PHP absolute value : abs()
Here are some examples
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 7Changing all negative numbers of an array
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>";
}
?>
0 -> 1
1 -> 2
2 -> 4
3 -> 7.3
4 -> 105Math Functions
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