What steps can PHP developers take to troubleshoot and debug issues related to variable assignment and usage in their code?

Issue: PHP developers can troubleshoot and debug issues related to variable assignment and usage by checking for syntax errors, ensuring variables are properly initialized, and using debugging tools like var_dump() or print_r() to inspect variable values. Example PHP code snippet:

// Check for syntax errors
if ($variable = "value") {
    echo "Variable assigned successfully";
} else {
    echo "Variable assignment failed";
}

// Ensure variables are properly initialized
$number = 10;
$sum = $number + $another_variable;

// Use var_dump() or print_r() to inspect variable values
$names = array("John", "Jane", "Doe");
var_dump($names);
print_r($names);