What are the potential implications of using isset() function in PHP for handling undefined indexes?

Using isset() function in PHP for handling undefined indexes can help prevent PHP notices or warnings from being displayed when trying to access an index that does not exist in an array. By using isset(), you can check if the index is set before trying to access it, avoiding potential errors in your code. 

// Using isset() function to handle undefined indexes
if(isset($array['undefined_index'])){
    // Code to handle the defined index
} else {
    // Code to handle the undefined index
}

Keywords

isset PHP undefined indexes implications error handling

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