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POmysqli_num_rows() expects parameter 1 to be mysqli_result
primarykey
Id
10411686
data
AcceptedAnswerId
0
AnswerCount
1
ClosedDate
2012-08-13T03:33:32.087
CommentCount
2
CommunityOwnedDate
CreationDate
2012-05-02T10:12:14.347
FavoriteCount
0
LastActivityDate
2012-05-02T10:18:49.043
LastEditDate
2017-05-23T10:24:29.077
LastEditorUserId
-1
OwnerUserId
1369722
ParentId
0
PostTypeId
1
Score
0
ViewCount
301
LastEditorDisplayName
text
Body
<blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/11674312/warning-mysql-fetch-expects-parameter-1-to-be-resource-boolean-given-error">Warning: mysql_fetch_* expects parameter 1 to be resource, boolean given error</a> </p> </blockquote> <p>I receive this error:</p> <pre><code>Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in /Applications/MAMP/htdocs/start-fbook/facebook.php on line 113 </code></pre> <p>Here's the code. When I submit the "status", it will be saved in my database, so there's nothing wrong with that part. </p> <pre><code><?php //Eerst bouwen we onze applicatie uit zodat ze werkt, ook zonder JavaScript include_once("classes/Activity.class.php"); $activity = new Activity(); //controleer of er een update wordt verzonden if(!empty($_POST['activitymessage'])) { $activity->Text = $_POST['activitymessage']; try { $activity->Save(); } catch (Exception $e) { $feedback = $e->getMessage(); } } //altijd alle laatste activiteiten ophalen $recentActivities = $activity->GetRecentActivities(); ?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>IMDBook</title> <link href="css/reset.css" rel="stylesheet" /> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <style type="text/css"> body { font-family: "Lucida Grande", Tahoma, Verdana, sans-serif; } h1 { margin-bottom: 5px; } h2 { color: #3b5998; display: inline; } ul { margin-top: 10px; } ul li { border-bottom: 1px dotted #fff; padding: 15px 5px; } #activitymessage { border: 1px solid #bbbbbb; padding: 5px; width: 280px; font-size: 1.1em; } div.statusupdates { width: 380px; background-color: #ccc; padding: 20px; margin: 0 auto; } #btnSubmit { background-color: #627aac; color: #fff; font-size: 1.1em; border: 1px solid #29447e; } div.errors { width: 380px; margin: 25px auto; background-color: #bd273a; -moz-border-radius: 10px; color: white; font-weight: bold; text-shadow: 1px 1px 1px #000; padding: 20px; display:none; } </style> <script type="text/javascript"> </script> </head> <body> <div> <div class="errors"></div> <form method="post" action=""> <div class="statusupdates"> <h1>GoodBytes.be</h1> <input type="text" value="What's on your mind?" id="activitymessage" name="activitymessage" /> <input id="btnSubmit" type="submit" value="Share" /> <ul id="listupdates"> <?php if(mysqli_num_rows($recentActivities) > 0) { while($singleActivity = mysqli_fetch_assoc($recentActivities)) { echo "<li><h2>GoodBytes.be</h2> ". $singleActivity['activity_description'] ."</li>"; } } else { echo "<li>Waiting for first status update</li>"; } ?> </ul> </div> </form> </div> </body> </html> </code></pre>
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<php><mysql>
Title
mysqli_num_rows() expects parameter 1 to be mysqli_result
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1. This table or related slice is empty.
PostParentId
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1. PTQuestion
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1. USCommunity
UserOwnerUserId
1. USNiels
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  LTLinked
2. PL
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  POmysqli_num_rows() expects parameter 1 to be mysqli_result
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2. VO
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  POmysqli_num_rows() expects parameter 1 to be mysqli_result
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CommentsPostId
1. COWhat is the code of `$activity->GetRecentActivities();` ? Is it really a `mysql_query()` result ?
  singulars
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  POmysqli_num_rows() expects parameter 1 to be mysqli_result
  UserUserId
  USadrien
2. COStrip your code of any parts that are not essential to the problem next time!
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  POmysqli_num_rows() expects parameter 1 to be mysqli_result
  UserUserId
  USSirko

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