Are there any potential pitfalls to using isset() and != "" to check array contents in PHP?

Using isset() and != "" to check array contents in PHP can lead to potential pitfalls because isset() checks if a variable is set and not null, but it doesn't necessarily mean that the value is not an empty string. To accurately check if an array value is set and not empty, you should use isset() in combination with empty(). This will ensure that you are checking for both the existence and emptiness of the array value. 

// Check if array value is set and not empty
if(isset($array['key']) && !empty($array['key'])) {
    // Value is set and not empty
    echo "Value is set and not empty: " . $array['key'];
} else {
    // Value is either not set or empty
    echo "Value is either not set or empty";
}

Keywords

isset array contents PHP empty string comparison

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