How can one properly format PHP code to avoid errors like missing variables?

To avoid errors like missing variables in PHP code, it is essential to properly format the code and ensure that all variables are defined before they are used. One way to do this is by initializing variables with default values or checking if they are set before using them in the code. 

// Example of properly formatting PHP code to avoid missing variables error
$variable = isset($variable) ? $variable : '';
// Now $variable has a default value of an empty string if not previously defined

Keywords

PHP code formatting error handling variable declaration syntax errors

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