🔒 Fix SQL Injection in saveUserDatav2 and getRecordById

[tsainez]

🎯 What: Fixed a critical SQL Injection vulnerability in php/binary_data/user-1.php where user input was unsafely concatenated into SQL queries. Additionally, fixed a PHP syntax error caused by orphaned methods lacking a class wrapper.

⚠️ Risk: Attackers could have exploited the string concatenation to manipulate SQL commands, allowing them to bypass authentication, alter databases, or extract unauthorized information (e.g., retrieving password hashes or taking over accounts).

🛡️ Solution:

1. Wrapped the missing class users extends database { ... } block to resolve the runtime/syntax errors.
2. Rewrote saveUserDatav2 and getRecordById queries to use parameterized prepared statements.
3. Substituted insecure concatenation with ? bindings and passed parameters securely via an array ($params) to the abstract parent::executeQuery method.
4. Corrected malformed SQL syntax (single quotes around identifiers changed to backticks).

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PR created automatically by Jules for task 17783252116456808429 started by @tsainez

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