How can the use of the isset() function help prevent errors in PHP code?

The isset() function in PHP can help prevent errors by checking if a variable is set and not null before trying to use it. This can prevent undefined variable errors or notices from being triggered when accessing variables that may not exist. 

if(isset($variable)){
    // Do something with $variable
} else {
    // Handle the case where $variable is not set
}

Keywords

isset function errors PHP code prevent

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