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<?php // Scenario 1 $preferred_icon = 'test'; $plugin_data = null; var_dump( ! empty( $plugin_data->update->icons[ $preferred_icon ] ) ); // Scenario 2 $plugin_data = new stdClass(); $plugin_data->update = new stdClass(); $plugin_data->update->icons = null; var_dump( ! empty( $plugin_data->update->icons[ $preferred_icon ] ) ); // Now try it without the `empty()`. // Scenario 3 var_dump( $plugin_data->update->icons[ $preferred_icon ] ); // Scenario 5 $plugin_data = new stdClass(); $plugin_data->update = new stdClass(); var_dump( $plugin_data->update->icons[ $preferred_icon ] );
Output for 8.3.0 - 8.3.6
bool(false) bool(false) Warning: Trying to access array offset on null in /in/kAVJ9 on line 17 NULL Warning: Undefined property: stdClass::$icons in /in/kAVJ9 on line 22 Warning: Trying to access array offset on null in /in/kAVJ9 on line 22 NULL
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18
bool(false) bool(false) Warning: Trying to access array offset on value of type null in /in/kAVJ9 on line 17 NULL Warning: Undefined property: stdClass::$icons in /in/kAVJ9 on line 22 Warning: Trying to access array offset on value of type null in /in/kAVJ9 on line 22 NULL

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