What common syntax errors should PHP developers be aware of when writing scripts?

One common syntax error in PHP is forgetting to close statements with a semicolon. This can lead to unexpected behavior or errors in the script. Another common mistake is using curly braces incorrectly, especially in control structures like if statements or loops. Developers should also be cautious of mismatched parentheses or quotes, as these can cause syntax errors. Example:

// Incorrect usage of semicolon
$variable = "Hello"
echo $variable;

// Corrected code with semicolon
$variable = "Hello";
echo $variable;