How can syntax highlighting tools help in identifying PHP code errors?

Syntax highlighting tools can help in identifying PHP code errors by visually highlighting different elements of the code such as keywords, variables, strings, and comments in different colors. This can make it easier to spot syntax errors such as missing semicolons, parentheses, or quotation marks. Additionally, syntax highlighting can help identify typos or incorrect usage of PHP functions or language constructs.

```php
<?php

// Example of PHP code with syntax highlighting helping to identify errors
$name = "John";
echo "Hello, $name"
```

In this code snippet, the syntax highlighting tool would likely highlight the missing semicolon at the end of the `echo` statement, making it easier to identify and correct the error.