How can debugging tools and techniques in PHP help identify and resolve issues related to variable scope and assignment?

Variable scope issues in PHP can be identified and resolved using debugging tools like Xdebug or by using techniques such as printing variable values at various points in the code to track their scope. By understanding where variables are declared and how they are being accessed, developers can pinpoint scope-related problems and make necessary adjustments to ensure variables are assigned and accessed correctly. 

<?php
$globalVar = "I am a global variable";

function testFunction() {
    $localVar = "I am a local variable";
    
    echo $globalVar; // This will cause an error as $globalVar is not accessible inside the function
}

testFunction();
?>

Keywords

debugging tools variable scope assignment PHP functions error types

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