Unlimited dimensions INI file

deep_load.php

<?php

/**
 * Unroll dot-sequenced keys to new dimension
 * @param array $source
 * @return array
 */
function deep_load($source)
{
    $result = [];
    ksort($source);
    foreach ($source as $key => $values) {
        $x =& $result;
        foreach (explode('.', $key) as $s) {
            if (!array_key_exists($s, $x)) {
                $x[$s] = [];
            }
            $x =& $x[$s];
        }
        $x = is_array($values) ? deep_load($values) : $values;
    }
    return $result;
}

/**
 * Get values from .ini in more then two dimensions.
 * Both sections and names can have dots to unroll.
 * @param string $filename
 * @return array
 */
function parse_ini_deep($filename)
{
    return deep_load(parse_ini_file($filename, true));
}

demo.ini

omega = -1
sigma = 0

[first]
alfa = 1

[second]
beta.a = 2
beta.b = 3

[third.one]
gama = "ololo"