How can debugging techniques like "var_dump" be utilized to identify undefined variables in PHP scripts?

To identify undefined variables in PHP scripts, you can use debugging techniques like "var_dump" to output the variable values and types. By using var_dump on variables that may be undefined, you can check if they have been initialized or assigned a value. This can help you pinpoint where the issue lies in your code and resolve it accordingly. 

$undefinedVariable = null;

var_dump($undefinedVariable);

Keywords

var_dump debugging techniques undefined variables PHP scripts identify

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