Using WordPress ‘find_core_update()’ PHP function

The find_core_update() WordPress PHP function finds the available update for WordPress core. It uses a specific version string and locale for this purpose.

Usage

Here’s a simple usage of the function:

$update = find_core_update('5.8', 'en_US');
if ($update) {
echo "Update found!";
} else {
echo "No update found.";
}

In this example, the function checks for updates to version 5.8 of WordPress in the en_US locale. If it finds an update, it prints “Update found!”, otherwise it prints “No update found.”

Parameters

• $version (string) – The version string to find the update for.
• $locale (string) – The locale to find the update for.

More information

See WordPress Developer Resources: find_core_update()

This function is available in all versions of WordPress after 3.7.0.

Examples

Checking for a specific update

This example checks for an update to WordPress version 5.8 for the en_US locale:

$update = find_core_update('5.8', 'en_US');
if ($update) {
    echo "Update for 5.8 en_US found!";
}

Handling no update

This code checks for an update and prints a custom message if no update is found:

$update = find_core_update('5.8', 'en_US');
if (!$update) {
    echo "No updates for 5.8 en_US.";
}

Checking multiple versions

This example checks updates for multiple versions:

$versions = ['5.7', '5.8', '5.9'];
foreach ($versions as $version) {
$update = find_core_update($version, 'en_US');
if ($update) {
echo "Update for version $version found!";
}
}

Checking multiple locales

This example checks for updates for multiple locales:

$locales = ['en_US', 'fr_FR', 'de_DE'];
foreach ($locales as $locale) {
$update = find_core_update('5.8', $locale);
if ($update) {
echo "Update for locale $locale found!";
}
}

Combining multiple versions and locales

This example checks updates for multiple versions and locales:

$versions = ['5.7', '5.8', '5.9'];
$locales = ['en_US', 'fr_FR', 'de_DE'];
foreach ($versions as $version) {
foreach ($locales as $locale) {
$update = find_core_update($version, $locale);
if ($update) {
echo "Update for version $version and locale $locale found!";
}
}
}