How can PHP error messages help identify the location of syntax errors in a code?

PHP error messages can help identify the location of syntax errors by providing specific information about where the error occurred in the code. The error message usually includes the line number and a description of the issue, making it easier to pinpoint the error and correct it. By carefully reading the error message and reviewing the code at the specified location, developers can quickly identify and fix syntax errors in their PHP code.

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

In this code snippet, a syntax error is present due to the missing semicolon at the end of the `$variable` assignment. When executed, PHP will output an error message indicating the line number where the error occurred, helping the developer locate and fix the syntax error.