wp_is_development_mode( string $mode ): bool

Checks whether the site is in the given development mode.


$mode string Required
Development mode to check for. Either 'core', 'plugin', 'theme', or 'all'.

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bool True if the given mode is covered by the current development mode, false otherwise.

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File: wp-includes/load.php. View all references

function wp_is_development_mode( $mode ) {
	$current_mode = wp_get_development_mode();
	if ( empty( $current_mode ) ) {
		return false;

	// Return true if the current mode encompasses all modes.
	if ( 'all' === $current_mode ) {
		return true;

	// Return true if the current mode is the given mode.
	return $mode === $current_mode;

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Version Description
6.3.0 Introduced.

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