wp-includes/class-wp-customize-setting.php:589Validates an input.
$valuemixedtrue|WP_ErrorOne hook fires while WP_Customize_Setting::validate() runs, in this order:
Validates a Customize setting value.
public function validate( $value ) { if ( is_wp_error( $value ) ) { return $value; } if ( is_null( $value ) ) { return new WP_Error( 'invalid_value', __( 'Invalid value.' ) ); } $validity = new WP_Error(); /** * Validates a Customize setting value. * * Plugins should amend the `$validity` object via its `WP_Error::add()` method. * * The dynamic portion of the hook name, `$this->ID`, refers to the setting ID. * * @since 4.6.0 * * @param WP_Error $validity Filtered from `true` to `WP_Error` when invalid. * @param mixed $value Value of the setting. * @param WP_Customize_Setting $setting WP_Customize_Setting instance. */ $validity = apply_filters( "customize_validate_{$this->id}", $validity, $value, $this ); if ( is_wp_error( $validity ) && ! $validity->has_errors() ) { $validity = true; } return $validity; }Introduced in 4.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-setting.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.