function array_snake_case($array)
{
if (!is_array($array)) {
return false;
}
$return = array();
foreach ($array as $key => &$value) {
if (strpos($key, '_') === false && !is_int($key)) {
preg_match_all('!([A-Z][A-Z0-9]*(?=$|[A-Z][a-z0-9])|[A-Za-z][a-z0-9]+)!', $key, $matches);
foreach ($matches[0] as &$match) {
$match = $match == strtoupper($match) ? strtolower($match) : lcfirst($match);
}
$newKey = implode('_', $matches[0]);
} else {
$newKey = $key;
}
if (is_array($value)) {
$newValue = array_snake_case($value);
} else {
$newValue = $value;
}
$return[$newKey] = $newValue;
}
return $return;
}
/**
* Test function array_snake_case()
*
* @dataProvider snakeCaseProvider
*/
public function testArraySnakeCase($test, $expected)
{
$this->assertEquals($expected, array_snake_case($test));
}
