How to create php extension with zephir
For example:
We model an electron initially localized in space at x = 5 whit momentum
$\psi(x,t=0) = exp[(-1/2((x-5)/ \sigma_0)^2)]exp(ik_0x)$
Your problem is to determine the wave function for all later times. The behavior of this wave packet when confined to an harmonic oscillator potential
Reading tutorial here http://www.sitepoint.com/getting-started-php-extension-development-via-zephir/