diff options
Diffstat (limited to 'include/datetime.php')
| -rw-r--r-- | include/datetime.php | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/datetime.php b/include/datetime.php index ef0927ea4..0b8722b4f 100644 --- a/include/datetime.php +++ b/include/datetime.php @@ -534,3 +534,35 @@ function update_birthdays() { } } } + +/** + * + * Calculate a due by interval + * based on the current datetime the interval is added/subtracted + * @author Hilmar Runge + * @since 2020-02-20 + * @param $duri the interval in the format n[n]i + * where n is a 1-2 digit numeric amount and i is a unit + * example $duri='1w' represents one week + * unit may be one of i(minutes), h(hours), d(days), w(weeks), m(months, y(years)) + * @return array['due'] computed datetime in format 'Y-m-d H:i:s' + * ['durn'] the amount + * ['duru'] the unit + * or false + */ + function calculate_adue($duri=false, $sign='+') { + if ( preg_match( '/^[0-9]{1,2}[ihdwmy]{1}$/', $duri ) && ($sign == '+' || $sign == '-') ) { + $duru = substr( $duri, -1); + $durn = substr( $duri, 0, -1); + $due = date( 'Y-m-d H:i:s', strtotime( + '+' . $durn . ' ' + . str_replace( array(':i',':h',':d',':w',':m',':y'), + array('minutes', 'hours', 'days', 'weeks', 'months', 'years'), + ( ':'. $duru ) + ) + ) + ); + return array( 'durn' => $durn, 'duru' => $duru, 'due' => $due); + } + return false; + } |