Prepared By : Uday Shah (HOD-ID)
Contact No : 7600044051
E-Mail : rupareleducation@gmail.com
PHP Math functions
Sr.No
|
Name
|
Description
|
1
|
abs()
|
It returns the
absolute value of number. It means it gives the positive answer.
Syntax:
abs(mixed number)
Ex: abs(-4)
|
2
|
Ceil()
|
It returns the
next highest integer value by rounding up the value.
The return value
of ceil is still bigger then that of integer.
Syntax: float
ceil(float value)
Ex: ceil(5.6)
|
3
|
floor()
|
It returns the
next lowest integer value by rounding down the value.
Syntax: float
floor(float value)
Ex: floor(5.6)
|
4
|
Round()
|
It returns the rounded
value of specified precision(No. of digit) after the decimal point.
Syntax: float
round(float value)
Ex: round(3.5)
|
5
|
fmod()
|
It returns the
floating point reminder(modular) of the division of argument.
It returns the
floating point reminder of dividing the dividend[x] by the divisor [y].
Syntax: float
fmod(float x,float y)
Ex:
$x=8;
$y=3;
$r=fmod($x,$y);
|
6
|
Min()
|
It returns the
numerically lowest value.
Syntax:
min(value1,value2,value3)
Ex: min(5,4,3,2)
|
7
|
Max()
|
It returns the
numerically highest value.
Syntax:
max(value1,value2,value3)
Ex: max(5,4,3,2)
|
8
|
pow()
|
It returns the
base raise to the power of expression. This function will return an integer
value.
Syntax:
pow(number base,exponent)
Ex: pow(2,3)
|
9
|
sqrt()
|
It return the
square root of argument.
Syntax:
sqrt(argument)
Ex: echo
sqrt(25)
|
10
|
rand()
|
It returns a
random integer value.
Syntax: rand()
Ex: echo rand()
|
11
|
acos()
|
The acos() function returns the arccosine of a
number as a numeric value between 0 and PI radians.
Syntax
acos(x)
Example
In this example we will get the arccosine of
different numbers:
<?php
echo(acos(-1)."<br>"); echo(acos(1)."<br>"); echo(acos(2)) ?>
output :
3.14159265359
0 -1. |
12
|
asin()
|
The asin() function returns the arcsine of a number
as a numeric value between-PI/2 and PI/2 radians.
Syntax
asin(x)
Example
In this example we will get the arcsine of different
numbers:
<?php
echo(asin(0) . "<br>"); echo(asin(-1) . "<br>"); echo(asin(1) . "<br>");
?>
The output of
the code above will be:
0
-1.57079632679 1.57079632679 |
13
|
atan()
|
The atan() function returns the
arctangent of a number as a numeric value between -PI/2 and PI/2 radians.
Syntax
atan(x)
Example
The following
example returns the arctangent of different numbers with the atan() function:
<?php
echo(atan(5) . "<br>");
?>
The output of the code above will be:
1.37340076695
|
14
|
sin()
|
The sin() function returns the sine of a number.
Syntax
sin(x)
Example
<?php
echo(sin(3) . "<br>"); ?>
output
0.14112000806
|
15
|
bindec()
|
The bindec() function converts a binary
number to a decimal number.
Syntax
bindec(binary_number)
Example
<?php
echo bindec("0011") . "<br>";
?>
output
3
|
16
|
decbin()
|
The decbin() function converts a decimal
number to a binary number.
Syntax
decbin(dec_number)
Example
<?php
echo decbin("3")."<br>";
?>
output
11
|
17
|
hexdec()
|
The
hexdec() function converts a hexadecimal number to a decimal number.
Syntax
hexdec(hex_number)
Example
<?php
echo hexdec("e")."<br>"; echo hexdec("a")."<br>";
?>
The
output of the code above will be:14 10 |
18
|
dechex()
|
The
dechex() function converts a decimal number to a hexadecimal number.
Syntax
dechex(dec_number)
Example
<?php
echo dechex("14")."<br>"; echo dechex("10")."<br>";
?>
output
:e a |
19
|
is_finite ()
|
The
is_finite () function returns true if the specified value is a finite number,
otherwise it returns nothing. The value is finite if it is within the allowed range for a PHP float on this platform.
Syntax
is_finite(x)
Example
<?php
output
:echo is_finite(2)."<br>"; echo is_finite(2000); ?> 1 1 |
20
|
is_infinite ()
|
The
is_infinite () function returns true if the specified value is an infinite
number, otherwise it returns nothing. The value is infinite if it is too big to fit into a PHP float on this platform.
Syntax
is_infinite(x)
Example
<?php
output echo is_infinite(2) . "<br>"; ?> 1 |
21
|
log()
|
The
log() function returns the natural logarithm (base E) of a number.
Syntax
log(x,base)
Example
<?php
echo(log(2.7183)."<br>"); echo(log(2)."<br>");
?>
output
1.00000668491
0.69314718056 |
22
|
base_convert()
|
The
base_convert () function converts a number from one base to another.
Syntax
base_convert (number,frombase,tobase);
Example
Convert
an octal number to a decimal number:
<?php
output
$oct = "0031"; $dec = base_convert($oct,8,10); echo "$oct in octal is equal to $dec in decimal."; ?> 0031 in octal is equal to 25 in decimal. |
23
|
deg2rad()
|
The
deg2rad() function converts a degree to its radian number.
Syntax
deg2rad(degree number);
Example
<?php
echo deg2rad("30") . "<br>";
?>
output:0.523598775598 |
24
|
cos()
|
The
cos() function returns the cosine of a number.
Syntax
cos(x)
Example
In
the following example we will return the cosine of different numbers:
<?php
echo(cos(3) . "<br>");
?>
output:-0.9899924 |
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