Php pi() function

Pi is often usefull in con/sin/tan functions..

There are also other Pi related constants.

These are most of them:



M_PI  = 3.14159265358979323846 // pi



// The following were added in PHP 4.0.0

M_PI_2 = 1.57079632679489661923 // pi/2 

M_PI_4 = 0.78539816339744830962 // pi/4 

M_1_PI = 0.31830988618379067154 // 1/pi 

M_2_PI = 0.63661977236758134308 // 2/pi 

M_SQRTPI = 1.77245385090551602729 // sqrt(pi) (Only in PHP 4.0.2+)

M_2_SQRTPI = 1.12837916709551257390 // 2/sqrt(pi)

Source: php.net

Php pi() function

<?php
echo pi(); // 3.1415926535898
echo M_PI; // 3.1415926535898
?>

Source: php.net

Php pi

pi() 
M_PI

Similar codes

0 vote331 views1 answer
Php compare strings case insensitive
PHP
104 votes549 views6 answers
String length php
PHP
0 vote402 views1 answer
Update Query in Codeigniter Using Multiple Where Condition
PHP CodeIgniter
0 vote404 views4 answers
Wordpress get current taxonomy
PHP Wordpress
1 vote350 views1 answer
How laravel return the old value
PHP
1 vote273 views2 answers
Php disable errors
PHP
10 votes359 views3 answers
Remove package in laravel
PHP
0 vote386 views1 answer
Get basename without extension Laravel
PHP Laravel
0 vote445 views4 answers
Logout php code
PHP
1 vote315 views1 answer
How to setup cronjob on cakephp on share hosting
PHP