What potential issue arises when using count() in PHP and how can it be resolved?

When using count() in PHP on a variable that may not be an array or countable object, a warning or error may be triggered. To prevent this issue, you can first check if the variable is an array or countable object before using count(). This can be done using the is_array() and is_countable() functions in PHP. 

if (is_array($variable) || is_countable($variable)) {
    $count = count($variable);
    // continue with the rest of your code
} else {
    // handle the case where $variable is not an array or countable object
}

Keywords

count PHP array empty isset

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