FIX: updated the regexp to detect class_implements

Author: Kharhamel

generator/src/DocPage.php

@@ -123,6 +123,11 @@ public function detectFalsyFunction(): bool
             return true;
         }
 
+        //used to detect class_implements
+        if (preg_match("/&false; when the given class doesn't exist/m", $file)) {
+            return true;
+        }
+
         return false;
     }
 

generator/tests/DocPageTest.php

@@ -18,6 +18,7 @@ public function testDetectFalsyFunction()
         $arrayReplace = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/array/functions/array-replace.xml');
         $mktime = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/datetime/functions/mktime.xml');
         $date = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/datetime/functions/date.xml');
+        $classImplement = new DocPage(__DIR__ . '/../doc/doc-en/en/reference/spl/functions/class-implements.xml');
 
         $this->assertTrue($pregMatch->detectFalsyFunction());
         $this->assertFalse($implode->detectFalsyFunction());
@@ -29,6 +30,7 @@ public function testDetectFalsyFunction()
         $this->assertFalse($arrayReplace->detectFalsyFunction());
         $this->assertTrue($mktime->detectFalsyFunction());
         $this->assertTrue($date->detectFalsyFunction());
+        $this->assertTrue($classImplement->detectFalsyFunction());
     }
 
     public function testDetectNullsyFunction()