How can echoing out variables in PHP scripts help in debugging and identifying errors in code?

Echoing out variables in PHP scripts can help in debugging and identifying errors in code by allowing developers to see the current value of variables at different points in the script. This can help pinpoint where a variable may be getting overwritten or not holding the expected value. By echoing out variables, developers can track the flow of data through the script and identify any discrepancies that may be causing errors.

$variable = "Hello, World!";
echo $variable; // Output: Hello, World!