Enforce all error report for php tests. (#3670)

* Enforce all error report for php tests.

* Import vendor/autoload.php in tests/bootstrap_phpunit.php

1 files changed, 16 insertions, 4 deletions

diff --git a/php/src/Google/Protobuf/Internal/DescriptorPool.php b/php/src/Google/Protobuf/Internal/DescriptorPool.php
index 65d1a884..304c1615 100644
--- a/php/src/Google/Protobuf/Internal/DescriptorPool.php
+++ b/php/src/Google/Protobuf/Internal/DescriptorPool.php
@@ -109,18 +109,30 @@ class DescriptorPool
 
     public function getDescriptorByClassName($klass)
     {
-        return $this->class_to_desc[$klass];
+        if (isset($this->class_to_desc[$klass])) {
+            return $this->class_to_desc[$klass];
+        } else {
+            return null;
+        }
     }
 
     public function getEnumDescriptorByClassName($klass)
     {
-        return $this->class_to_enum_desc[$klass];
+        if (isset($this->class_to_enum_desc[$klass])) {
+            return $this->class_to_enum_desc[$klass];
+        } else {
+            return null;
+        }
     }
 
     public function getDescriptorByProtoName($proto)
     {
-        $klass = $this->proto_to_class[$proto];
-        return $this->class_to_desc[$klass];
+        if (isset($this->proto_to_class[$proto])) {
+            $klass = $this->proto_to_class[$proto];
+            return $this->class_to_desc[$klass];
+        } else {
+          return null;
+        }
     }
 
     public function getEnumDescriptorByProtoName($proto)