Online PHP editor | refs for OYEZ3

<?php if(version_compare(PHP_VERSION, '5.2') < 0) return; echo 'FILTER_FLAG_IPV4 = ',FILTER_FLAG_IPV4 ,"\n"; echo 'FILTER_FLAG_IPV6 = ',FILTER_FLAG_IPV6,"\n"; echo 'FILTER_FLAG_NO_PRIV_RANGE = ',FILTER_FLAG_NO_PRIV_RANGE,"\n"; echo 'FILTER_FLAG_NO_RES_RANGE = ', FILTER_FLAG_NO_RES_RANGE,"\n";