Math Function In PHP

Ø       abs()

• This function is used to find the absolute value. It means that the negative value is converted into positive value. There is no fix return type. If the value is in integer then the return type is integer and if it is float then the return type is float.

Syntax

                   number abs(mixed $number)

Parameter	Description
$number	The numeric value to process.

Example

<?php

          echo abs(-5.2)."<br/>";

          echo abs(-5);

?>

Output  

5.2

5

Ø       ceil()

• This function will round up to the nearest integer value. The return type is integer.

Syntax

                   float ceil(float $value)

Parameter	Description
$value	The value to round.

Example

<?php

          echo ceil(4.5)."<br/>";

?>

Output 

5

Ø       floor()

• This function will return the next lowest integer value by rounding down value if necessary.

Syntax

                   float floor(float $value)

Parameter	Description
$value	The value to round.

Example

<?php

          echo floor(4.5)."<br/>";

?>

Output 

4

Ø       round()

• This function will round the floating value. If the value contain the digit that is greater than 5 then the digit 1 will be carried forward to the digit before it.

Syntax

                   float round(float $val [,integer $precision])

Parameter	Description
$val	The value to round.
$precision	The optional number of decimal digit to round, the default to zero.

Example

<?php

          echo round(4.5)."<br/>";

          echo round(4.2)."<br/>";

?>

Output  

5

4

Ø       fmod()

• This function will act as an operator module which is used to find the reminder between the two digits.

Syntax

                   float fmod(float $x, float $y)

Example

<?php

          echo fmod(5,4)."<br/>";

?>

Output  

1

Ø       min()

• min() returns the numerically lowest of the parameter values.
• If the first parameter is an array, min returns the lowest value in that array.

Syntax

                   mixed min(mix $arg1,mix arg2……..mix agrn)

                   mixed min(array $values)

Example

<?php

          echo min(5,4)."<br/>";

          $val = min(array(2,4,8),array(1,5,6));

          print_r($val);

?>

Output  

4
Array ( [0] => 1 [1] => 5 [2] => 6 )

Ø       max()

• max() returns the numerically highest of the parameter values.
• If the first parameter is an array, min returns the highest value in that array.

Syntax

                   mixed max(mix $arg1,mix arg2……..mix agrn)

                   mixed max(array $values)

Example

<?php

          echo max(5,4)."<br/>";

          $val = max(array(2,4,8),array(1,5,6));

          print_r($val);

?>

Output  

5
Array ( [0] => 2 [1] => 4 [2] => 8 )

Ø       pow()

• Return base raised to the power of exp. If possible, this function will return an integer.

Syntax

                   number pow(number $base, number $exp)

Parameter	Description
$base	The base to use
$exp	The exponent

Example

<?php

          echo pow(2,3);

?>

Output

          8

Ø       sqrt()

• Returns the square root of arg.

Syntax

                   float sqrt(float $arg)

Example

<?php

          echo sqrt(100);

?>

Output

          10

Ø       rand()

• generates a random integer.

Syntax

                   int rand([int min,int max])

• if called without the optional min,max argument rand() returns a pseudo random integer between 0 and RAND_MAX.

Example

<?php

          echo rand()."<br/>";

          echo rand(5,15);

?>

Output

2275
7

Posted By : Hemangi Zala