wp-includes/l10n.php:999Loads a plugin's translated strings.
$domainstring$deprecatedstring|falseoptionalfalse$plugin_rel_pathstring|falseoptionalfalseboolfunction load_plugin_textdomain( $domain, $deprecated = false, $plugin_rel_path = false ) { /** @var WP_Textdomain_Registry $wp_textdomain_registry */ /** @var array<string, WP_Translations|NOOP_Translations> $l10n */ global $wp_textdomain_registry, $l10n; if ( ! is_string( $domain ) ) { return false; } if ( false !== $plugin_rel_path ) { $path = WP_PLUGIN_DIR . '/' . trim( $plugin_rel_path, '/' ); } elseif ( false !== $deprecated ) { _deprecated_argument( __FUNCTION__, '2.7.0' ); $path = ABSPATH . trim( $deprecated, '/' ); } else { $path = WP_PLUGIN_DIR; } $wp_textdomain_registry->set_custom_path( $domain, $path ); // If just-in-time loading was triggered before, reset the entry so it can be tried again. if ( isset( $l10n[ $domain ] ) && $l10n[ $domain ] instanceof NOOP_Translations ) { unset( $l10n[ $domain ] ); } return true;}Introduced in 1.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/l10n.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.