Modernize to PHP 7.3

rector.php

@@ -14,5 +14,5 @@ return RectorConfig::configure()
     ])
     ->withImportNames(importShortClasses: false)
     ->withAttributesSets(doctrine: true)
-    ->withPhpSets(php71: true)
+    ->withPhpSets(php73: true)
     ->withTypeCoverageLevel(0);

src/Operator/PHP/Matches.php

@@ -20,6 +20,6 @@ class Matches
             return false;
         }
 
-        return false !== stripos($subject, $pattern);
+        return false !== stripos($subject, (string) $pattern);
     }
 }

src/Operator/PHP/NotMatches.php

@@ -20,6 +20,6 @@ class NotMatches
             return true;
         }
 
-        return false === stripos($subject, $pattern);
+        return false === stripos($subject, (string) $pattern);
     }
 }