What is the significance of the error message "Parse error: syntax error, unexpected $end" in PHP code?

The error message "Parse error: syntax error, unexpected $end" in PHP code indicates that there is a missing closing brace or parenthesis in the code. This means that the PHP parser reached the end of the file before it expected to, resulting in a syntax error. To solve this issue, you need to carefully check your code for missing closing braces or parentheses and ensure that all opening and closing pairs are properly matched.

// Incorrect code with missing closing brace
if ($condition) {
    echo "Condition is true";
// Missing closing brace for if statement
```

```php
// Corrected code with closing brace added
if ($condition) {
    echo "Condition is true";
} // Closing brace added for if statement