Most entry-level tools perform (changing $user_password to $a1_b2 ). While this stops casual hobbyists, it won't stop a determined developer. A "better" obfuscator employs layered defense:
PHP obfuscation is the process of transforming your readable PHP code into a format that's difficult for humans to understand. This is achieved by renaming variables, functions, and classes to meaningless names, removing comments and whitespace, and applying various encoding techniques. best php obfuscator better
: Helps prevent unauthorized modifications to licensing checks. Choosing the Right Method and classes to meaningless names