Made debug log better able to handle write errors without breaking things for no good reason

classes/debug.php

@@ -23,6 +23,7 @@
 namespace local_treestudyplan;
 
 use Exception;
+use JsonException;
 
 defined('MOODLE_INTERNAL') || die();
 
@@ -33,15 +34,21 @@ class debug {
      * @return any The object
      */
     public static function &dump(&$object,$filename="/tmp/debug.log") {
+
+        try {
             $f = fopen($filename,"a+");
             try {
                 $json = \json_encode($object,JSON_PRETTY_PRINT | JSON_THROW_ON_ERROR );
                 fwrite($f,$json."\n");
-        } catch (Exception $x) {
+            } catch (JsonException $x) {
                 fwrite($f,"Error processing json: ". $x->getMessage()."\n");
                 fwrite($f,"Print_r dump: \n".print_r($object,true)."\n");
             }
+        } catch (\Exception $x){
+
+        } finally {
             fclose($f);
+        }
         return $object;
     }
 
@@ -51,10 +58,13 @@ class debug {
      * @return any The object
      */
     public static function &print_r(&$object,$filename="/tmp/debug.log") {
+        try {
             $f = fopen($filename,"a+");
             fwrite($f,"Print_r dump: \n".print_r($object,true)."\n");
+        } catch (\Exception $x) {
+        } finally {
             fclose($f);
-        return $object;
+        }
     }
 
 
@@ -64,8 +74,12 @@ class debug {
      * @return any The object
      */
     public static function write($text,$filename="/tmp/debug.log") {
+        try {
             $f = fopen($filename,"a+");
             fwrite($f,$text."\n");
+        } catch (\Exception $x) {
+        } finally {
             fclose($f);
         }
+    }
 }