The variable $formattedMetadata does not seem to be defined for all execution paths leading up to this point.
If you define a variable conditionally, it can happen that it is not defined
for all execution paths.
Let’s take a look at an example:
functionmyFunction($a){switch($a){case'foo':$x=1;break;case'bar':$x=2;break;}// $x is potentially undefined here.echo$x;}
In the above example, the variable $x is defined if you pass “foo” or “bar”
as argument for $a. However, since the switch statement has no default
case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
functionmyFunction($a){switch($a){case'foo':$x=1;break;case'bar':$x=2;break;}if(isset($x)){// Make sure it's always set.echo$x;}}
Define a default value for the variable:
functionmyFunction($a){$x='';// Set a default which gets overridden for certain paths.switch($a){case'foo':$x=1;break;case'bar':$x=2;break;}echo$x;}
Add a value for the missing path:
functionmyFunction($a){switch($a){case'foo':$x=1;break;case'bar':$x=2;break;// We add support for the missing case.default:$x='';break;}echo$x;}
It seems like $formattedMetadata defined by $this->displayImg->forma...ta($this->getContext()) on line 136 can also be of type boolean; however, ImagePage::makeMetadataTable() does only seem to accept array, maybe add an additional type check?
If a method or function can return multiple different values and unless you are
sure that you only can receive a single value in this context, we recommend
to add an additional type check:
/** * @return array|string */functionreturnsDifferentValues($x){if($x){return'foo';}returnarray();}$x=returnsDifferentValues($y);if(is_array($x)){// $x is an array.}
If this a common case that PHP Analyzer should handle natively, please let us
know by opening an issue.
wikimedia /
mediawiki
Max Semenik
Aaron Schulz
Brian Wolff
Jack Phoenix
Alexander Emsenhuber
Chad Horohoe
Bryan Tong Minh
Loading history...
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: