How can one effectively handle syntax errors, such as unexpected variables, while writing PHP code?

When encountering syntax errors like unexpected variables in PHP code, it is important to carefully review the code to identify the source of the error. This often involves checking for typos, missing semicolons, or incorrect variable names. Using an integrated development environment (IDE) with syntax highlighting can also help pinpoint the issue quickly. Once the error is identified, it can be fixed by correcting the syntax error and ensuring that variables are properly declared and used.

// Example of correcting a syntax error with unexpected variables
$variable1 = 10;
$variable2 = 20;

// Correcting the syntax error by using the variables properly
$result = $variable1 + $variable2;
echo $result;