Date Special Operation Control class

Control

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Date Special Operation Control class
Yufan August 15
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Gets the current time for the "YYYY-MM-DD" format
function Nowdate ()
{
$result = Date ("Y"). " -". Date (" M ")." -". Date (" D ");
return $result;
}

Gets the current time for the "YYYY-MM-DD HH:ii:ss" format
function Nowdatetime ()
{
$result = Date ("Y"). " -". Date (" M ")." -". Date (" D ")." ". Date (" H ").": ". Date (" I ").": ". Date (" S ");
return $result;
}

 //extract year from the YYYY-MM-DD format
 function getyear ($Date)
 {
  $ pos = Strpos ($Date, "-");
  $result = "";
  for ($i =0 $i < $pos $i + +)
  {
   $result = $result. $Date [$i];
 }
  $month = getmonth ($Date);
  $day = Getday ($Date);
  if (!checkdate ($month, $day, $result)
  {
   $result = false;
 }
  return $result;
 }

 //extract months from the YYYY-MM-DD format
 function getmonth ($Date)
 {
  $ POS1 = Strpos ($Date, "-");
  $pos 2 = Strrpos ($Date, "-");
  $result = "";
  for ($i = $pos 1+1 $i < $pos 2; $i + +)
  {
   $result = $result. $Date [$i];
 }
  $year = getyear ($Date);
  $day = Getday ($Date);
  if (!checkdate ($result, $day, $year)
  {
   $result = false;
 }
  return $result;
 }

Extract day from the time in "YYYY-MM-DD" format
function Getday ($Date)
{
$pos = Strrpos ($Date, "-");
$result = "";
for ($i = $pos +1; $i <10; $i + +)
{
$result = $result. $Date [$i];
}
$year = getyear ($Date);
$month = Getday ($Date);
if (!checkdate ($month, $result, $year))
{
$result = false;
}
return $result;
return $result;
}

Check leap year, return Boolean value
function Checkleap ($year)
{
$result = ($year% 4 = 0) && (($year% <> 0) | | ($year% 400 = 0)));
return $result;
}

Add days on the current date to return to the "YYYY-MM-DD" format
function Addday ($offset)
{
$year =date ("Y");
$month =date ("M");
$day =date ("D");
for ($i =0; $i < $offset; $i + +)
{
Switch ($month) {
Case 1:
{
if ($day ==31) {
$day = 1;
$month = 2;
}
else {
$day = $day + 1;
}
}
Break
Case 2:
{
if (Checkleap ($year)) {
if ($day = = 29) {
$day = 1;
$month = 3;
}
else {
$day = $day + 1;
}
}
else {
if ($day = = 28) {
$day = 1;
$month = 3;
}
else {
$day = $day + 1;
}
}
}
Break
Case 3:
{
if ($day ==31) {
$day = 1;
$month = 4;
}
else {
$day = $day + 1;
}
}
Break
Case 4:
{
if ($day ==30) {
$day = 1;
$month = 5;
}
else {
$day = $day + 1;
}
}
Break
Case 5:
{
if ($day ==31) {
$day = 1;
$month = 6;
}
else {
$day = $day + 1;
}
}
Break
Case 6:
{
if ($day ==30) {
$day = 1;
$month = 7;
}
else {
$day = $day + 1;
}
}
Break
Case 7:
{
if ($day ==31) {
$day = 1;
$month = 8;
}
else {
$day = $day + 1;
}
}
Break
Case 8:
{
if ($day ==31) {
$day = 1;
$month = 9;
}
else {
$day = $day + 1;
}
}
Break
Case 9:
{
if ($day ==30) {
$day = 1;
$month = 10;
}
else {
$day = $day + 1;
}
}
Break
Case 10:
{
if ($day ==31) {
$day = 1;
$month = 11;
}
else {
$day = $day + 1;
}
}
Break
Case 11:
{
if ($day ==30) {
$day = 1;
$month = 12;
}
else {
$day = $day + 1;
}
}
Break
Case 12:
{
if ($day ==31) {
$day = 1;
$month = 1;
$year = $year + 1;
}
else {
$day = $day + 1;
}
}
}
}
$result = $year. " -". $month." -". $day;
return $result;
}

Time to return the "YYYY-MM-DD" format on the current date
function Abateday ($offset)
{
$year =date ("Y");
$month =date ("M");
$day =date ("D");
for ($i =0; $i < $offset; $i + +)
{
Switch ($month) {
Case 1:
{
if ($day ==1) {
$day = 31;
$month = 12;
$year = $year-1;
}
else {
$day = $day-1;
}
}
Break
Case 2:
{
if ($day = = 1) {
$day = 31;
$month = 1;
}
else {
$day = $day-1;
}
}
Break
Case 3:
{
if ($day = = 1) {
if (Checkleap ($year)) {
$day = 29;
}
else {
$day = 28;
}
$month = 2;
}
else {
$day = $day-1;
}
}
Break
Case 4:
{
if ($day = = 1) {
$day = 31;
$month = 3;
}
else {
$day = $day-1;
}
}
Break
Case 5:
{
if ($day = = 1) {
$day = 30;
$month = 4;
}
else {
$day = $day-1;
}
}
Break
Case 6:
{
if ($day = = 1) {
$day = 31;
$month = 5;
}
else {
$day = $day-1;
}
}
Break
Case 7:
{
if ($day = = 1) {
$day = 30;
$month = 6;
}
else {
$day = $day-1;
}
}
Break
Case 8:
{
if ($day = = 1) {
$day = 31;
$month = 7;
}
else {
$day = $day-1;
}
}
Break
Case 9:
{
if ($day = = 1) {
$day = 31;
$month = 8;
}
else {
$day = $day-1;
}
}
Break
Case 10:
{
if ($day = = 1) {
$day = 30;
$month = 9;
}
else {
$day = $day-1;
}
}
Break
Case 11:
{
if ($day = = 1) {
$day = 31;
$month = 10;
}
else {
$day = $day-1;
}
}
Break
Case 12:
{
if ($day = = 1) {
$day = 30;
$month = 11;
}
else {
$day = $day-1;
}
}
}
}
$result = $year. " -". $month." -". $day;
return $result;
}

Gets the time on the first day of the current week to return to the "YYYY-MM-DD" format
function Firstdayofthisweek ()
{
$offset =date ("w");
if ($offset ==0)
{
$offset = 7;
}
$offset--;
$result = Abateday ($offset);
return $result;
}

Gets the time when the last day of the current week returns to the "YYYY-MM-DD" format
function Lastdayofthisweek ()
{
$offset =date ("w");
if ($offset ==0)
{
$offset = 7;
}
$offset = 7-$offset;
$result = Addday ($offset);
return $result;
}

Gets the number of days for a specified month
function Daysamountofthismonth ($month, $year)
{
Switch ($month) {
Case 1:
$result = 31;
Break
Case 2:
{
if (Checkleap ($year)) {
$result = 29;
} else {
$result = 28;
}
Break
}
Case 3:
$result = 31;
Break
Case 4:
$result = 30;
Break
Case 5:
$result = 31;
Break
Case 6:
$result = 30;
Break
Case 7:
$result = 31;
Break
Case 8:
$result = 31;
Break
Case 9:
$result = 30;
Break
Case 10:
$result = 31;
Break
Case 11:
$result = 30;
Break
Case 12:
$result = 31;
Break
}
return $result;
}

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