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PHP IntlCalendar add () function

Syntax:
  • Object Oriented Style:
    bool IntlCalendar::add (int  $field, int $amount)
  • Procedural style:
    bool intlcal_add (IntlCalendar $cal, int $field, int $amount)
Parameters:
  • $cal:this parameter contains an IntlCalendar resource.
  • $field:This parameter contains date / time field constants IntlCalendar. It contains an integer value from 0 to IntlCalendar::FIELD_COUNT.
  • $amount:signed amount to add to the current field. If the quantity value is positive, then it will move forward, and if the amount value is negative, it will move into the past.
Returned value:This function returns TRUE on success or FALSE on failure.The following programs illustrate the IntlCalendar::add() function in PHP:Program 1:  
// Create IntlCalendar from a DateTime object or string $calendar = IntlCalendar: : fromDateTime ( ’2019-08-29 09: 19: 29’ );  
// Add date $calendar -> add (IntlCalendar::FIELD_MONTH, 1);  
// Show result date echo IntlDateFormatter::formatObject ( $calendar ), "" ;  
// Add date $calendar -> add (IntlCalendar::FIELD_WEEK_OF_MONTH, 1);  
// Display the output echo IntlDateFormatter::formatObject ( $calendar );  
?>
Exit:
Sep 29, 2019, 9:19:29 AM Oct 6, 2019, 9:19:29 AM
Program 2:  
// Create IntlCalendar from an object or DateTime strings $calendar = IntlCalendar::fromDateTime ( ’2019-08-29 09: 19: 29’ );  
// Add date $calendar -> add (IntlCalendar::FIELD_YEAR, 5);  
// Show result date echo IntlDateFormatter::formatObject ( $calendar ), "" ;  
// Add date $calendar -> add (IntlCalendar::FIELD_YEAR, 10);  
// Display the output echo IntlDateFormatter::formatObject ( $calendar ), "" ;  
// Add date $calendar -> add (IntlCalendar::FIELD_HOUR_OF_DAY, 10);  
// Display the output echo IntlDateFormatter::formatObject ( $calendar );  
?>
Exit:
Aug 29, 2024, 9:19:29 AM Aug 29, 2034, 9:19:29 AM Aug 29, 2034, 7:19:29 PM
Link:https://www.php.net/manual/en/intlcalendar.add.php

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