What are some resources or documentation that can help troubleshoot PHP syntax errors in functions like the one provided in the forum thread?

The issue in the provided PHP function is a syntax error due to missing closing parentheses for the `if` statement. To solve this issue, simply add the closing parentheses at the end of the `if` statement. 

function checkIfValid($input) {
    if ($input == 1) {
        return "Valid";
    } else {
        return "Invalid";
    }
}

Keywords

PHP syntax errors troubleshooting functions documentation

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