How can PHP developers effectively debug and troubleshoot issues like parse errors in their code?

To effectively debug parse errors in PHP code, developers can start by carefully reviewing the error message provided by the PHP interpreter, which typically includes the line number where the error occurred. They can then check for syntax errors, such as missing semicolons or parentheses, and ensure that all opening and closing tags are properly matched. Using an integrated development environment (IDE) with syntax highlighting and error checking can also help identify and fix parse errors quickly.

// Example code snippet with a parse error
$variable = "Hello World"
echo $variable;
```

```php
// Corrected code snippet with the missing semicolon added
$variable = "Hello World";
echo $variable;