What common syntax errors can occur in PHP code like the one provided in the forum thread?

Common syntax errors that can occur in PHP code include missing semicolons at the end of statements, mismatched parentheses or curly braces, and misspelled keywords or function names. To solve these issues, carefully review the code for any missing or misplaced characters and ensure that all syntax elements are correctly formatted.

// Incorrect code with missing semicolon
$name = "John"
echo "Hello, $name!";
```

```php
// Corrected code with semicolon added
$name = "John";
echo "Hello, $name!";