Security rules that cannot be violated in PHP development_PHP tutorial

As PHP programmers, especially novices, they always know too little about the dangers of the Internet. They are often helpless against external intrusions. They have no idea how hackers invade. Submit Intrusions, upload vulnerabilities, sql injection, cross-scripting attacks, and more. As the most basic precaution, you need to pay attention to your external submissions and make the first security mechanism to deal with the firewall.

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