The strict empty check for PHP array

is_array_empty.php

<?php
function array_remove_empty( $array ) {
	foreach ( $array as $key => $value ) {
		if ( is_array($value) ) {
			$array[$key] = array_remove_empty( $array[$key] );
		}

		if ( empty( $array[$key] ) ) {
			unset( $array[$key] );
		}
	}

	return $array;
}
function is_array_empty( $array ) {
	$array = array_remove_empty( $array );	// Remove empty array
	$array = array_filter( (array) $array );
	if ( empty($array) ) {
		return true;
	} else {
		return false;
	}
}

Usage Example

$raw = array(
	'firstname' => 'Foo',
	'lastname'  => 'Bar',
	'nickname' => '',
	'birthdate' => array(
		'day'   => '',
		'month' => '',
		'year'  => '',
	),
	'likes' => array(
		'cars'  => array('Subaru Impreza WRX STi', 'Mitsubishi Evo', 'Nissan GTR'),
		'bikes' => array(),
	),
);
if ( ! is_array_empty( $array ) ) {
	// Exists!!
}