What are potential syntax errors to watch out for in PHP code?

One common syntax error in PHP code is missing semicolons at the end of statements. This can cause unexpected behavior or errors in your code. To fix this issue, always remember to add a semicolon at the end of each statement in PHP.

// Incorrect code without semicolon
echo "Hello, World"
// Correct code with semicolon
echo "Hello, World";
```

Another potential syntax error is mismatched parentheses, brackets, or curly braces. This can lead to parse errors or unexpected behavior in your code. To solve this issue, always make sure to properly match opening and closing parentheses, brackets, or curly braces.

```php
// Incorrect code with mismatched curly braces
if ($condition {
    echo "Condition is true";
}
// Correct code with properly matched curly braces
if ($condition) {
    echo "Condition is true";
}
```

Lastly, using reserved keywords or functions as variable names can also result in syntax errors. To avoid this issue, always choose variable names that do not conflict with PHP keywords or functions.

```php
// Incorrect code using reserved keyword as variable name
$echo = "Hello, World";
// Correct code with a valid variable name
$message = "Hello, World";