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@geoffreycrofte
Last active January 4, 2022 11:32
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Save and display the last modified post date in WordPress
<?php
/**
* Adds a timestamp in the first blog option.
* @return void
*/
function juiz_update_last_edit_date() {
if ( is_multisite() ) {
add_blog_option( 1, 'last_post_modified_timestamp', time() );
} else {
add_option( 'last_post_modified_timestamp', time() );
}
}
add_action('save_post', 'juiz_update_last_edit_date' );
/**
* Echo the formatted date based on the $format param and the last modified post date.
* @param (string) $format The formatted date based on datetime format.
* @see https://www.php.net/manual/en/datetime.format.php
* @return (string) The formatted date.
*/
function juiz_last_edit_date( $format ) {
if ( is_multisite() ) {
$timestamp = get_blog_option( 1, 'last_post_modified_timestamp', 0 );
} else {
$timestamp = get_option( 'last_post_modified_timestamp', 0 );
}
echo date( $format, $timestamp );
}
<?php
/**
* Use this wherever you want to display the date
*/
juiz_last_edit_date('m.d.Y');
?>
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