PHP abs() function

The abs() function returns absolute value of given number. It returns an integer value but if you pass floating point value, it returns a float value.

Syntax:

Name	Description	Return type
number	Numeric value	Float/integer

$PHP math abs function$

Example1

<?php
echo "The value of abs(-4.2) is: ".abs(-4.2)."<br>"; // 4.2 (double/float)
echo "The value of abs(5) is: ".abs(5)."<br>";    // 5 (integer)
echo "The value of abs(-5) is: ".abs(-5)."<br>";   // 5 (integer)
?>

Output:

The value of abs(-4.2) is: 4.2
The value of abs(5) is: 5
The value of abs(-5) is: 5

Example 2:

<?php
$value = -123;
if ($value < 0){
	$positive = abs($value);
	echo $positive;
}
?>

Output:

Example 3

<?php
$v1= array(1,-2,4,-7.3,105); 
$v2=array_map("abs",$v1); 
while (list ($key, $val) = each ($v2)) { 
echo "The array value $key is = $val <br>"; 
}
?>

Output:

The array [0] value is = 1 
The array [1] value is = 2 
The array [2] value is = 4 
The array [3] value is = 7.3 
The array [4] value is = 105

Note: array_map() is used to change all negative number of an array.

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PHP abs() function

Syntax:

Example1

Example 2:

Example 3

Note: array_map() is used to change all negative number of an array.

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