Call to a Member Function on a Non-Object: How to Diagnose and Fix This PHP Error?

Call to a Member Function on a Non-Object: Causes and Solutions

Introduction:

When attempting to access a class member function on a variable that is not an instance of an object, PHP generates the "Call to a member function on a non-object" error message. This issue commonly stems from two primary causes.

1. Null or Nonexistent Object:

The most prevalent cause is when a function returns a null or non-existent object, often encountered when querying a database. To resolve this issue, check the result of the database query and only process the object if it was actually fetched.

Example:

<br>$objPage = $db_result->fetch_object();<br>if ($objPage) {</p>
<pre class="brush:php;toolbar:false">$page

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