ceil
(PHP 3, PHP 4 )
ceil -- Round fractions up
Description
float ceil ( float value)
Returns the next highest integer value by rounding up value
if necessary. The return value of ceil() is still of type
float as the value range of float is usually bigger than
that of integer.
Example 1. ceil() example
<?php
echo ceil(4.3); // 5
echo ceil(9.999); // 10
?>
See also floor() and round().
cos
(PHP 3, PHP 4 )
cos -- Cosine
Description
float cos ( float arg)
cos() returns the cosine of the arg parameter. The arg parameter
is in radians.
Example 1. cos() example
<?php
echo cos(M_PI); // -1
?>
See also: acos(), sin(), tan(), and deg2rad().
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