Format dates in Spanish.

format_date.php

function format_date($date,$format) {
	$es_months = array("Ene", "Abr", "Ago", "Dic");
	$en_months = array("Jan", "Apr", "Aug", "Dec");

        $timestamp = strtotime(str_replace($es_months,$en_months,$date));
	return str_replace($en_months,$es_months,date($format,$timestamp));
}