deg2rad
(PHP 3>= 3.0.4, PHP 4 )
deg2rad -- Converts the number in degrees to the radian
equivalent
Description
float deg2rad ( float number)
This function converts number from degrees to the radian
equivalent.
Example 1. deg2rad() example
<?php
echo deg2rad(45); // 0.785398163397
var_dump(deg2rad(45) === M_PI_4); // bool(true)
?>
See also rad2deg().
exp
(PHP 3, PHP 4 )
exp -- Calculates the exponent of e (the Neperian or Natural
logarithm base)
Description
float exp ( float arg)
Returns e raised to the power of arg.
Note: 'e' is the base of the natural system of logarithms,
or approximately 2.718282.
Example 1. exp() example
<?php
echo exp(12) . "\n";
echo exp(5.7);
?>
The above example will output:
1.6275E+005
298.87
See also log() and pow().
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