What are common errors in PHP code and how can they be avoided?

One common error in PHP code is using undefined variables, which can lead to unexpected behavior or errors. To avoid this, always initialize variables before using them or check if they are set using isset(). Example: 

// Initializing variable before using it
$variable = '';

// Checking if variable is set before using it
if(isset($variable)) {
    // code here
}

Keywords

syntax error undefined variable fatal error debugging error handling

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