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miwebguy/CoreDates.php

Created September 2, 2021 14:39
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CoreDates.php
<?php
class CoreDates
{
/**
* @brief Return the greater of 2 dates
* @param $_first (str date)
* @param $_second (str date)
* @return (str date)
*/
static function dateGreater($_first, $_second)
{
$_firstU = strtotime($_first);
$_secondU = strtotime($_second);
if ($_firstU > $_secondU) return $_first;
else return $_second;
}
/**
* @brief Is the first date is greater than the second
* @param $_first (str date)
* @param $_second (str date)
* @return bool
*/
static function dateLater($_first, $_second)
{
$_first = strtotime($_first);
$_second = strtotime($_second);
return $_first > $_second;
}
/**
* @brief Is the first date is greater or equal to the second
* @param $_first (str date)
* @param $_second (str date)
* @return bool
*/
static function dateLaterEqual($_first, $_second)
{
$_first = strtotime($_first);
$_second = strtotime($_second);
return $_first >= $_second;
}
/**
* @brief Return an array of the days between two dates
* @param $_beg (str date)
* @param $_end (str date)
* @param $_format (str php date format)
* @return $_dates (arr list of dates)
*/
static function datesBetween($_beg, $_end, $_format = "Y-m-d")
{
$_dates = array();
$_beg = strtotime($_beg);
$_end = strtotime($_end);
while ($_beg <= $_end) {
$_dates[] = date($_format, $_beg);
$_beg = strtotime("+1 days", $_beg);
}
return $_dates;
}
/**
* @brief Get the Sunday of a given date's week
*/
static function weekBeg($date=false)
{
if(!$date) $date = date('Y-m-d');
$day = date('w',strtotime($date));
$first = date('Y-m-d', strtotime('-'.$day.' days') );
return $first;
}
static function pastMonths()
{
$months = array();
for($i=0;$i<=11;$i++){
$month=date('M',strtotime("first day of -$i month"));
$monthi=date('m',strtotime("first day of -$i month"));
$months[$monthi] = $month ;
}
return $months;
}
static function pastYears($limit=20)
{
$years = array();
for ($year = date('Y'); $year > date('Y')-20; $year--) $years[]=$year;
return $years;
}
/**
* @brief Get the Friday of a given date's week
*
*/
static function weekEnd($date)
{
$day = date('w',strtotime($date));
$start = strtotime($date);
$last = date('Y-m-d', strtotime('+'.(6-$day).' days',$start));
return $last;
}
/**
* @brief Convert time to hours after addition
*/
static function secondsToHours($number)
{
return number_format((($number / 60) / 60), 2);
}
/**
* @brief Measure time between 2 dates
*/
static function timeBetween($start_time,$end_time)
{
return date("U", strtotime($end_time)) - date("U", strtotime($start_time));
}
/**
* @brief Measure time between 2 dates, return hours
*/
static function hoursBetween($start_time,$end_time)
{
$seconds = date("U", strtotime($end_time)) - date("U", strtotime($start_time));
return number_format((($seconds / 60) / 60), 2);
}
/**
* @brief Return an array for starting a bucket for day of week data
*/
static function numericWeek()
{
$week = array(
"0"=>0,
"1"=>0,
"2"=>0,
"3"=>0,
"4"=>0,
"5"=>0,
"6"=>0
);
return $week;
}
/**
* @brief Return an array for starting a day of week data array
* Used for Template table headers
*/
static function alphaWeek()
{
$week = array(
"0"=>"Sun",
"1"=>"Mon",
"2"=>"Tue",
"3"=>"Wed",
"4"=>"Thu",
"5"=>"Fri",
"6"=>"Sat"
);
return $week;
}
/**
* @brief Get the previous week
*/
static function prevWeek($date)
{
return date('Y-m-d', strtotime('-7 day',strtotime($date)));
}
/**
* @brief Get the next week
*/
static function nextWeek($date)
{
try{
return date('Y-m-d', strtotime('+7 day', strtotime($date)));
} catch (Exception $e){
echo $date . " is bad";
}
}
/**
* @brief Get the previous day
*/
static function prevDay($date)
{
return date('Y-m-d', strtotime('-1 day',strtotime($date)));
}
/**
* @brief Get the next day
*/
static function nextDay($date)
{
try{
return date('Y-m-d', strtotime('+1 day', strtotime($date)));
} catch (Exception $e){
echo $date . " is bad";
}
}
/**
* Check for Valid Date String (YYYY-MM-DD)
*/
static function isValidDateString($datestring)
{
if(!preg_match("/^[1-2][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])$/",$datestring)
|| date("Y-m-d", strtotime($datestring))!=$datestring) {
return false;
} else {
return true;
}
}
/**
* Check for Valid Informix DateTime String (YYYY-MM-DD 00:00)
*/
static function isValidInformixDateTime($datestring)
{
if(!preg_match("/^([1-2][0-9]{3})\-([0-1][0-9])\-([0-3][0-9])([TZ\s]{1})([0-5][0-9])\:([0-5][0-9])$/",$datestring)
|| date("Y-m-d h:i", strtotime($datestring))!=$datestring) {
return false;
} else {
return true;
}
}
/**
* Convert Time From one Zone to Another
*
* $this->zogi->myAccount['_DEFAULTS']['timeZone'];
*/
static function convertTZ($date_time, $from_tz, $to_tz)
{
if(is_null($to_tz)) $to_tz = 'EST';
$time_object = new DateTime($date_time, new DateTimeZone($from_tz));
$time_object->setTimezone(new DateTimeZone($to_tz));
return $time_object->format('Y-m-d g:i A T');
}
/**
* Calculate Weekdays in Month (no holiday logic)
* @param date
*/
static function weekdaysInMonth($date='')
{
//in case no values are passed to the function, use the current month and year
if ($date == '') {
$y = date('Y');
$m = date('m');
} else {
$y = date('Y',strtotime($date));
$m = date('m',strtotime($date));
}
$lastday = date("t",mktime(0,0,0,$m,1,$y));
$weekdays = 0;
for($d=29; $d<=$lastday; $d++) {
$wd = date("w",mktime(0,0,0,$m,$d,$y));
if($wd > 0 && $wd < 6) $weekdays++;
}
return $weekdays+20;
}
}
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