What are the potential pitfalls of using empty() function in PHP for checking attribute existence?

Using the empty() function in PHP to check for attribute existence can lead to unexpected results because empty() also considers attributes with a value of 0, "0", false, or an empty string as empty. To accurately check for attribute existence, it is better to use isset() function instead. 

// Using isset() to check for attribute existence
if (isset($object->attribute)) {
    // Attribute exists
} else {
    // Attribute does not exist
}

Keywords

empty function PHP attribute existence

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