What is the significance of the error message "Fatal error: Call to a member function count() on a -object" in PHP?

The error message "Fatal error: Call to a member function count() on a non-object" typically occurs when trying to use the count() function on a variable that is not an object. This error can be solved by checking if the variable is an object before calling the count() function on it. To do this, you can use the instanceof keyword to check if the variable is an object before proceeding with the count() function. 

if ($variable instanceof stdClass) {
    $count = count($variable);
    echo $count;
} else {
    // Handle the case where $variable is not an object
    echo "Variable is not an object";
}

Keywords

Fatal error Call to a member function count() PHP Object

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