ZF-1949: A blank page appears if there's any missing method's argument.

Issue Type: Bug Created: 2007-09-14T16:08:28.000+0000 Last Updated: 2009-01-11T04:12:03.000+0000 Status: Resolved Fix version(s): - 1.5.3 (28/Jul/08)

Reporter: Enrique Chavez (tmeister) Assignee: Matthew Weier O'Phinney (matthew) Tags: - Zend_Rest_Server

Related issues: - ZF-3338



A blank page appears if there's any missing method's argument when calling from a url (sent as HTTP GET variables)

This issue appears when application reaches this line:

<pre class="highlight">
throw new Zend_Rest_Server_Exception('Invalid Method Call to ' . $this->_method . '. Requires ' . count($func_args) . ', ' . count($calling_args) . ' given.', 400);

If I replace that line with:

<pre class="highlight">
throw new Exception("Fails in line 149");

A blank page appears again, but if I error message is echoed everything works just fine.

File Zend/REST/Server.php line 149

I thought it was caused because of a php fatal error, but I don't find that yet.

I've had this issue in two different hosts:

Solaris 10 Apache 2 PHP 5.2.1

CentOS Apache 2 PHP 5.2.1

Here's my testing code:

service PHP

<pre class="highlight">
        ini_set('error_reporting', E_ALL);
        require_once 'Zend/Rest/Server.php';
        require_once 'test.php';
        $server = new Zend_Rest_Server();


<pre class="highlight">
class test
        * Test Method
        * @param string $to
        * @param string $say
        * @return bool
        public function sayHi($to, $say)
                return "Good $say, $to";


Posted by Darby Felton (darby) on 2007-09-18T13:12:31.000+0000

Assigning to [~davey] to initiate issue review

Posted by Matthew Weier O'Phinney (matthew) on 2007-09-20T12:43:40.000+0000

This is a simple case of an uncaught exception, that, because you must have display_errors off, results in no return content. The question is whether Zend_Rest_Server should do more exception handling and have a standard type of error response when exceptions are detected; I will discuss this with Davey.

Posted by Darby Felton (darby) on 2007-09-20T14:00:27.000+0000

Reducing priority to minor, since using a try...catch() block appears to be an easy workaround.

Posted by Eric Coleman (eric) on 2007-10-31T11:21:59.000+0000

This issue occurs -even- if a method has default arguments...

Change davey's example to test class to public function sayHi($to = null, $say = null)

Here's a fix:

<pre class="highlight">
Index: Zend/Rest/Server.php
--- Zend/Rest/Server.php    (revision 6696)
+++ Zend/Rest/Server.php    (working copy)
@@ -135,13 +135,15 @@
                     foreach ($func_args as $arg) {
                         if (isset($request[strtolower($arg->getName())])) {
                             $calling_args[] = $request[strtolower($arg->getName())];
+                        } else if ($arg->isOptional()) {
+                            $calling_args[strtolower($arg->getName())] = $arg->getDefaultValue();
                     foreach ($request as $key => $value) {
                         if (substr($key, 0, 3) == 'arg') {
                             $key = str_replace('arg', '', $key);
-                            $calling_args[$key]= $value;
+                            $calling_args[$key] = $value;

Posted by Matthew Weier O'Phinney (matthew) on 2008-05-09T11:59:06.000+0000

Scheduling for next mini release.

Posted by Matthew Weier O'Phinney (matthew) on 2008-07-24T04:21:16.000+0000

Fixes for both the case of missing required and missing optional arguments have been committed to trunk and 1.5 and 1.6 release branches.

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