What best practices should be followed when handling variables like $href in PHP scripts to avoid undefined variable errors?

When handling variables like $href in PHP scripts, it is best practice to check if the variable is set before using it to avoid undefined variable errors. This can be done using the isset() function to determine if the variable has been initialized. By checking if the variable is set before using it, you can prevent errors and ensure that your code runs smoothly. 

if(isset($href)){
    // do something with $href
} else {
    // handle case where $href is not set
}

Keywords

PHP variables error handling undefined variable best practices

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