- substr: documentation ( source)
<?php
function sub_string($string, $start, $length) {
$result = substr($string,$start,$length);
return $result;
}
$test_string = '1978-02-16';
$year = sub_string($test_string,0,4);
echo $year."\r\n";
$month = sub_string($test_string,4,2);
echo $month."\r\n";
$day = sub_string($test_string,8,2);
echo $day."\r\n";