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$helper = new PaginationHelper(['a','b','c','d','e','f'], 4);

$helper->pageCount(); // 2

$helper->itemCount(); // 6

$helper->pageItemCount(0); // 4

$helper->pageItemCount(1); // last page 2

$helper->pageItemCount(2); // -1 since the page is invalid

// pageIndex takes an item index and returns the page that it belongs on

$helper->pageIndex(5); // 1 (zero based index)

$helper->pageIndex(2); // 0

$helper->pageIndex(20); // -1

$helper->pageIndex(-10); // -1

var helper = new PaginationHelper(['a','b','c','d','e','f'], 4);

helper.pageCount(); // 2

helper.itemCount(); // 6

helper.pageItemCount(0); // 4

helper.pageItemCount(1); // last page 2

helper.pageItemCount(2); // -1 since the page is invalid

// pageIndex takes an item index and returns the page that it belongs on

helper.pageIndex(5); // 1 (zero based index)

helper.pageIndex(2); // 0

helper.pageIndex(20); // -1

helper.pageIndex(-10); // -1

$df=new dateFunctions();

echo "<br>".$df->dateSpanishToEnglish("25/01/2019"); // 2019/01/25

echo "<br>".$df->dateEnglishToSpanish("01-25-2019"); // true

echo "<br>".$df->validateDateEs("25/01/2019"); // false

echo "<br>".$df->validateDateEs("32/01/2019"); // true

echo "<br>".$df->validateDateTimeEs("2019/25/01 10:10:10"); // true

echo "<br>".$df->validateDateTimeEs("2019/25/01 10:62:10"); // false

echo "<br>".$df->validateDateEn("2019/01/25"); // true

echo "<br>".$df->validateDateEn("2019/01/32"); // false

echo "<br>".$df->validateDateTimeEn("2019/01/25 10:10:10"); // true

echo "<br>".$df->validateDateTimeEn("2019/01/25 10:62:10"); // false

echo "<br>".$df->validateTime("10:10:10"); // true

echo "<br>".$df->validateTime("10:62:10"); // false

echo "<br>".$df->daysBetweenTwoDates("2019/01/25", "2019/02/25"); // 31

echo "<br>".$df->daysBetweenTwoDates("2019/02/25", "2019/01/25"); // -31

echo "<br>".$df->validate_dateInOneYear("25/01/2020"); // True (hoy es 15 de Agosto del 2019)

echo "<br>".$df->dateToText("2019/01/25"); // 25 de Enero del 2019

echo "<br>".$df->getYearsOld("1975/01/25"); // 44 (hoy es 18 de Agosto del 2019)

echo "<br>".$df->getMinDate(["1975/01/25", "1978/01/20", "1970/10/25"]); // 1970-10-25