How can one avoid the "Undefined variable: PHP_SELF" error in PHP code?

The "Undefined variable: PHP_SELF" error occurs when trying to access the $_SERVER['PHP_SELF'] variable without it being defined. To avoid this error, you can check if the variable is set before using it in your code. 

if(isset($_SERVER['PHP_SELF'])) {
    $current_page = $_SERVER['PHP_SELF'];
} else {
    $current_page = '';
}

Keywords

Undefined variable PHP_SELF error PHP code avoid

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