Is it a best practice to use isset() function to check if a variable is set in PHP?

Yes, it is a best practice to use the isset() function to check if a variable is set in PHP. This function allows you to determine if a variable is declared and is not NULL. By using isset(), you can avoid potential errors that may occur when trying to access an undefined variable. 

// Check if the variable $name is set before using it
if(isset($name)) {
    echo "The variable is set: " . $name;
} else {
    echo "The variable is not set";
}

Keywords

isset function variable PHP best practice

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