The calendar_week_mod() WordPress PHP function is used to get the number of days since the start of the week, based on the provided day number.
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Usage
Let’s say you want to find out how many days have passed since the start of the week for the 10th day. You would use the calendar_week_mod() function like this:
echo calendar_week_mod(10);
The output will be 3, indicating that 3 days have passed since the start of the week.
Parameters
- $num (int) – This is the required parameter, which represents the day number.
More information
See WordPress Developer Resources: calendar_week_mod()
Examples
Simple usage
In this example, we get the number of days since the start of the week for the 5th day.
// This will output '5' echo calendar_week_mod(5);
Working with a variable
This example demonstrates how you can use a variable as an argument.
$dayNum = 7; // This will output '0' echo calendar_week_mod($dayNum);
As part of a condition
In this example, calendar_week_mod() is used in an if statement to check if it’s the start of the week.
$dayNum = 7;
if (calendar_week_mod($dayNum) == 0) {
echo "It's the start of the week!";
}
Inside a loop
This example shows how to use the function inside a loop to get the days since the start of the week for each day in a range.
for ($i = 1; $i <= 7; $i++) {
echo "Day $i: " . calendar_week_mod($i) . " days since the start of the week.\n";
}
With an array
This example demonstrates the use of the function with an array of day numbers.
$daysArray = array(1, 2, 3, 4, 5, 6, 7);
foreach ($daysArray as $day) {
echo "Day $day: " . calendar_week_mod($day) . " days since the start of the week.\n";
}