stats_dens_weibull
I wrote this to calculate harmonic averages in my shares program. Hopefully this can help someone who doesn't want to use PECL. The function accepts an unlimited number of arguments without the need to place them into an array, which is better than the way the PECL extension handles the function.
<?php
/**
* @author Daniel Morris
*/
function harmonic () {
$num_args = func_num_args ();
for ($i = 0; $i < $num_args; $i++) {
$sum += 1 / func_get_arg ($i);
}
return $num_args / $sum;
}
// Tests
echo harmonic (1, 2, 3, 4, 5);
echo harmonic (-1, 3, 4, 10293);
echo harmonic (-1, -2, -3, -4, -5);
// 2.1897810218978
// -9.6022389365052
// -2.1897810218978
?>
stats_harmonic_mean
(PECL stats >= 1.0.0)
stats_harmonic_mean — Devuelve la media armónica de una matriz de valores
Descripción
Advertencia
Esta función no está documentada actualmente, solamente se encuentra disponible la lista de parámetros.
Parámetros
-
a -
Valores devueltos
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User Contributed Notes
stats_harmonic_mean - [1 notes]
Daniel Morris (www.danielxmorris.com) ¶
4 years ago