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1 | <?php |
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2 | |||
3 | if(!class_exists('WPAdminNotifications')) |
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4 | { |
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5 | class WPAdminNotifications |
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0 ignored issues
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show
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6 | { |
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7 | /** |
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8 | * @var Singleton The reference to *Singleton* instance of this class |
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9 | */ |
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10 | private static $instance; |
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11 | |||
12 | private $notifications = array(); |
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13 | |||
14 | private $dismissed_notices; |
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15 | |||
16 | /** |
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17 | * Returns the *Singleton* instance of this class. |
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18 | * |
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19 | * @return Singleton The *Singleton* instance. |
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20 | */ |
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21 | public static function get_instance() |
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22 | { |
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23 | if( null === static::$instance ) |
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0 ignored issues
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Since
$instance is declared private, accessing it with static will lead to errors in possible sub-classes; consider using self , or increasing the visibility of $instance to at least protected.
Let’s assume you have a class which uses late-static binding: class YourClass
{
private static $someVariable;
public static function getSomeVariable()
{
return static::$someVariable;
}
}
The code above will run fine in your PHP runtime. However, if you now create a
sub-class and call the class YourSubClass extends YourClass { }
YourSubClass::getSomeVariable(); // Will cause an access error.
In the case above, it makes sense to update class SomeClass
{
private static $someVariable;
public static function getSomeVariable()
{
return self::$someVariable; // self works fine with private.
}
}
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24 | { |
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25 | static::$instance = new static(); |
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0 ignored issues
–
show
Since
$instance is declared private, accessing it with static will lead to errors in possible sub-classes; consider using self , or increasing the visibility of $instance to at least protected.
Let’s assume you have a class which uses late-static binding: class YourClass
{
private static $someVariable;
public static function getSomeVariable()
{
return static::$someVariable;
}
}
The code above will run fine in your PHP runtime. However, if you now create a
sub-class and call the class YourSubClass extends YourClass { }
YourSubClass::getSomeVariable(); // Will cause an access error.
In the case above, it makes sense to update class SomeClass
{
private static $someVariable;
public static function getSomeVariable()
{
return self::$someVariable; // self works fine with private.
}
}
![]() It seems like
new static() of type this<WPAdminNotifications> is incompatible with the declared type object<Singleton> of property $instance .
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. ![]() |
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26 | } |
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27 | return static::$instance; |
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0 ignored issues
–
show
Since
$instance is declared private, accessing it with static will lead to errors in possible sub-classes; consider using self , or increasing the visibility of $instance to at least protected.
Let’s assume you have a class which uses late-static binding: class YourClass
{
private static $someVariable;
public static function getSomeVariable()
{
return static::$someVariable;
}
}
The code above will run fine in your PHP runtime. However, if you now create a
sub-class and call the class YourSubClass extends YourClass { }
YourSubClass::getSomeVariable(); // Will cause an access error.
In the case above, it makes sense to update class SomeClass
{
private static $someVariable;
public static function getSomeVariable()
{
return self::$someVariable; // self works fine with private.
}
}
![]() |
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28 | } |
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29 | |||
30 | public function init() |
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31 | { |
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32 | add_action( 'admin_notices', array( $this, 'render_notifications' ) ); |
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33 | add_action( 'network_admin_notices', array( $this, 'render_network_notifications' ) ); |
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34 | add_action( 'wp_ajax_dismiss_admin_notification', array( $this, 'dismiss_notification' ) ); |
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35 | add_action( 'admin_footer', array( $this, 'render_script' ) ); // Must be hooked to a late action hook |
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36 | $this->dismissed_notices = get_option('wp_dismissed_notices'); |
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37 | if( false === $this->dismissed_notices ) $this->dismissed_notices = array(); |
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38 | } |
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39 | |||
40 | public function register_notification( $handle, $options ) |
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41 | { |
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42 | if( !key_exists( $handle, $this->notifications ) ) |
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43 | { |
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44 | $this->notifications[$handle] = $options; |
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45 | } |
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46 | else trigger_error( "The handle <strong>$handle</strong> has already been registered. Please choose a different handle for your notification." ); |
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47 | } |
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48 | |||
49 | public function render_notifications() |
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50 | { |
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51 | foreach($this->notifications as $handle => $notification) |
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52 | { |
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53 | $this->render_notification( $handle, $notification ); |
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54 | } |
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55 | } |
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56 | |||
57 | public function render_network_notifications() |
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58 | { |
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59 | foreach( $this->notifications as $handle => $notification ) |
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60 | { |
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61 | if( $notification['network'] ) $this->render_notification( $handle, $notification ); |
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62 | } |
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63 | } |
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64 | |||
65 | public function dismiss_notification() |
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66 | { |
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67 | $id = filter_input( INPUT_POST, 'id' ); |
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68 | if( !in_array( $id, $this->dismissed_notices ) ) |
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69 | { |
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70 | $this->dismissed_notices[] = $id; |
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71 | update_option( 'wp_dismissed_notices', $this->dismissed_notices); |
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72 | } |
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73 | wp_die(); |
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74 | } |
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75 | |||
76 | public function render_script() |
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77 | { |
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78 | if( 0 === count( $this->notifications ) ) return; |
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79 | ?> |
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80 | <script> |
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81 | jQuery(document).ready(function($){ |
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82 | $('.notice').on('click','.notice-dismiss',function(e){ |
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83 | $.post(ajaxurl,{ |
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84 | action: 'dismiss_admin_notification', |
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85 | id: $(this).parent().attr('id') |
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86 | }); |
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87 | }); |
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88 | }); |
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89 | </script> |
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90 | <?php |
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91 | } |
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92 | |||
93 | private function render_notification( $id, $n ) |
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94 | { |
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95 | if( in_array( $id, $this->dismissed_notices ) ) return; |
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96 | |||
97 | printf( |
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98 | '<div id="%s" class="notice notice-%s %s%s"><p>%s</p></div>', |
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99 | $id, |
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100 | $n['type'], |
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101 | $n['dismissible']?'is-dismissible ':'', |
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102 | $n['class'], |
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103 | $n['html'] |
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104 | ); |
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105 | } |
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106 | } |
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107 | } |
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108 |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.