PHP numeric functions

PHP numeric functions

Don’t think that PHP’s power is limited to strings only.
The language has over 50 built-in functions for working with numbers, ranging from simple formatting functions to functions for arithmetic, logarithmic, and trigonometric manipulations.
Some of these important functions are

Sr. No	Function	What it Does
1	ceil()	Rounds a number up
2	floor()	Rounds a number down
3	abs()	Finds the absolute value of anumber
4	pow()	Raises one number to the power of another
5	exp()	Finds the exponent of a number
6	rand()	Generates a random number
7	bindec()	Converts a number from binary to decimal
8	decbin()	Converts a number from decimal to binary
9	decoct()	Converts a number from decimal to octal
10	octdec()	Converts a number from octal to decimal
11	dechex()	Converts a number from decimal to hexadecimal
12	hexdec()	Converts a number from hexadecimal to decimal
13	number_format()	Formats number with grouped thousands and decimals
14	printf()	Formats a number using a custom specification

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Eg i(ceil)

<?php $num=19.7 echo ceil($num); ?>

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<?php        $num=19.7        echo ceil($num);    ?>

Output
20

In the above example
Initialize variable $num with value=19.7 , output will become 20.
because this function round value up.

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Eg ii(floor)

<?php $num=19.7 echo floor($num); ?>

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<?php        $num=19.7        echo floor($num);    ?>

Output
19

in the above example
variable $num = 19.7,and the output will become 19.
Because this function round value down.

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Eg iii(abs)

<?php $num =-19.7 echo abs($num); ?>

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<?php        $num =-19.7        echo abs($num);    ?>

Output
19

In the above example
declare variable ($num) value=19.7 and the output will 19.7
Because abs( ) returns the absolute of given number.

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Eg iv(pow)

<?php echo pow(4,3); ?>

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<?php      echo pow(4,3);    ?>

Output
64

In the above example.
Pass pow( ) function inside echo with value(4,3).
Its multiply (value=4). three times and the result is 64.

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Eg v(rand)

<?php echo rand(10,99); ?>

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<?php      echo rand(10,99);    ?>

Output
55

In the above example
Pass rand( ) function With value from( 10 to 99 ).
it will display any random value lies from 10 to 100.
when we refresh the page on every refresh it show random value like. 22,33 ,44,56 and so on.

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Eg vi(bindec)

<?php echo bindec(1000); ?>

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<?php echo bindec(1000);    ?>

Output
8

In the above example
bindec( ) function pass inside echo statement with binary value = 1000.
So output will become 8 because bindec( ) function convert binary number into decimal number.

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Eg vii(decbin)

<?php echo decbin(8); ?>

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<?php echo decbin(8); ?>

Output
1000

In the above example
decbin( ) function Pass inside echo statement with decimal value = 8.
So output will become. 1000