How can PHP be used to create a CSS popup that closes after a certain amount of time without using JavaScript?

To create a CSS popup that closes after a certain amount of time without using JavaScript, you can utilize PHP to dynamically generate the CSS code with a timed delay for the popup to disappear. By setting a PHP variable with the desired time delay and outputting it in the CSS code, you can achieve the desired effect. 

<?php
// Set the time delay for the popup to close (in milliseconds)
$delay = 5000; // 5 seconds

// Output CSS code with the timed delay for the popup to disappear
echo '<style>
    .popup {
        display: block;
    }
    .popup.close {
        display: none;
    }
    @keyframes closePopup {
        0% {
            opacity: 1;
        }
        100% {
            opacity: 0;
            display: none;
        }
    }
    .popup {
        animation: closePopup ' . ($delay / 1000) . 's forwards;
    }
</style>';
?>

Keywords

PHP CSS popup timer close

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