How can a PHP beginner effectively sort data by date without using a database?

When sorting data by date in PHP without using a database, you can store the date values in an array and then use the `usort()` function to sort the array based on the date values. You can define a custom comparison function that compares the date values in the desired format. 

// Array of dates
$dates = ['2022-01-15', '2021-12-20', '2022-02-10'];

// Custom comparison function for sorting dates
function compareDates($date1, $date2) {
    return strtotime($date1) - strtotime($date2);
}

// Sort the dates array
usort($dates, 'compareDates');

// Output sorted dates
foreach ($dates as $date) {
    echo $date . "\n";
}

Keywords

PHP sorting data date array usort

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