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PHP Date Time: Finding the Day in Year Number for a Date
PHP Date Time Tips - Part 8:Do you want to find the day-in-year for a particular date? You can use date() function with the "z" modifier. Like this:
<?php
// get day of year for 08 aug 2008
// result 221
echo date("z", mktime(0,0,0,8,8,2008))+1;
?>
