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<?php class WP_Widget { public function __construct( $id_base, $name, $widget_options = array(), $control_options = array() ) {} } class WP_Widget_Text extends WP_Widget { public function __construct() { $widget_ops = array( 'classname' => 'widget_text', 'description' => 'Arbitrary text.', 'customize_selective_refresh' => true, 'show_instance_in_rest' => true, ); $control_ops = array( 'width' => 400, 'height' => 350, ); parent::__construct( 'text', 'Text', $widget_ops, $control_ops ); } } class Text_Widget extends WP_Widget { // Notice it does not have a constructor, which is doing it wrong. } class WP_Widget_Factory { public $widgets = array(); public function register( $widget ) { if ( $widget instanceof WP_Widget ) { $this->widgets[ spl_object_hash( $widget ) ] = $widget; } else { $this->widgets[ $widget ] = new $widget(); } } } $factory = new WP_Widget_Factory(); $factory->register( 'Text_Widget' );
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
Fatal error: Uncaught ArgumentCountError: Too few arguments to function WP_Widget::__construct(), 0 passed in /in/uPrIn on line 34 and at least 2 expected in /in/uPrIn:4 Stack trace: #0 /in/uPrIn(34): WP_Widget->__construct() #1 /in/uPrIn(40): WP_Widget_Factory->register('Text_Widget') #2 {main} thrown in /in/uPrIn on line 4
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Warning: Missing argument 1 for WP_Widget::__construct(), called in /in/uPrIn on line 34 and defined in /in/uPrIn on line 4 Warning: Missing argument 2 for WP_Widget::__construct(), called in /in/uPrIn on line 34 and defined in /in/uPrIn on line 4
Output for 5.0.0 - 5.0.5
Warning: Missing argument 1 for WP_Widget::__construct() in /in/uPrIn on line 4 Warning: Missing argument 2 for WP_Widget::__construct() in /in/uPrIn on line 4
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/uPrIn on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/uPrIn on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/uPrIn on line 4
Process exited with code 255.
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