Hướng dẫn php weekday index

I want to get Monday, Tuesday, Wednesday... using php function.

I have only numeric values for those like 1,2,3..7 where

1 = Monday 2 = Tuesday ... 7 = Sunday.

Can anybody help me regarding this.

Thanks,

Kanji

asked Dec 29, 2010 at 6:07

6

My personal favorite...

$day_start = date[ "d", strtotime[ "next Sunday" ] ]; // get next Sunday
for [ $x = 0; $x < 7; $x++ ]
    $week_days[] = date[ "l", mktime[ 0, 0, 0, date[ "m" ], $day_start + $x, date[ "y" ] ] ]; // create weekdays array.

Khantahr

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answered Dec 8, 2012 at 19:21

CarlosCarlos

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If all you have is a numeric value and not a complete timestamp, by far the easiest way is this:

$weekdays = array['Monday', 'Tuesday', 'Wednesday', ...];
$weekday = 0;
echo $weekdays[$weekday];

answered Dec 29, 2010 at 6:14

deceze♦deceze

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DateTime::format, with the $format parameter as l [lowercase L].

Object Oriented style:

$object->format['l'];

Procedural style:

date_format[DateTime $object, 'l'];

You can create a DateTime object with DateTime::__construct, and you can learn more about DateTime formats here.

answered Dec 29, 2010 at 6:12

waiwai933waiwai933

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3

The following should give you the day of the week for today [ex. tuesday]:

or for a specific date you can use something like this:

For more info: //www.php.net/manual/en/function.date.php

If you have just a number that you are trying to convert to a day of the week, you could use the following:

function convertNumberToDay[$number] {
    $days = array['Sunday','Monday', 'Tuesday', 'Wednesday','Thursday','Friday','Saturday'];
    return $days[$number-1]; // we subtract 1 to make "1" match "Sunday", "2" match "Monday"
}
echo convertNumberToDay[3]; // prints "Tuesday"

answered Dec 29, 2010 at 6:28

Andy FlemingAndy Fleming

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So you can create a simple function like this:

function getDayName[$dayNo] {
    return date['l', mktime[0,0,$dayNo,0,1]];
}

Demo: //www.ideone.com/hrITc

answered Dec 29, 2010 at 6:29

karim79karim79

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If you simply want to convert 0 to "Monday", 1 to "Tuesday", etc. use an array.

$day_of_week = array
[
    0 => 'Monday',
    1 => 'Tuesday',
    2 => 'Wednesday',
    .
    6 => 'Sunday'
];

$day = 2;

echo $day_of_week[$day];

answered Dec 29, 2010 at 6:46

Amil WaduwawaraAmil Waduwawara

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1

switch [$day] {
    case 0 : echo "Monday"; break;//if $day = 0  it will print Monday
    case 1 : echo "Tuesday"; break;
    case 2 : echo "Wednesday"; break;
}

answered Dec 29, 2010 at 6:15

rajmohanrajmohan

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