PHP pow() function

The pow() is a PHP mathematic function. It raises the first number to the power of the second number.

Syntax:

Parameter	Description	Required /Optional
base	Required. Specifies the base to use.	required
exp	Required. Specifies the exponent.	required

Return Value: Returns a number (floating-point & Integer) which is equal to $base raised to the power of $exponent.

 <?php $num=pow(3, 2); echo “Your number is = pow (3, 2)”.'<br>’; echo “By using sqrt function Your number is : “.$num; ?> 

Output:

Your number is =pow(3, 2) By using sqrt function Your number is : 9

 <?php $num=pow(-4, 2); echo “Your number is = pow (-4, 2)”.'<br>’; echo “By using sqrt function Your number is : “.$num; ?> 

Output:

Your number is = pow (-4, 2) By using sqrt function Your number is : 16

 <?php $num=pow(-3, -3); echo “Your number is =pow(-3, -3)”.'<br>’; echo “By using sqrt function Your number is : “.$num; ?> 

Output:

Your number is =pow(-3, -3) By using sqrt function Your number is : -0.037037037037037

 <?php $num=pow(-3, -3.2); echo “Your number is =pow(-3, -3.2)”.'<br>’; echo “By using sqrt function Your number is : “.$num; ?> 

Output:

Your number is =pow(-3, -3.2) By using sqrt function Your number is : NAN

 <?php for($i=1;$i<=5;$i++){ echo “The power value of [$i] is”. “=”.pow($i,2).”<br>”; } ?> 

Output:

The power value of [1] is=1 The power value of [2] is=4 The power value of [3] is=9 The power value of [4] is=16 The power value of [5] is=25

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