Why is PHP suitable for high-traffic websites?

The main reason why the website becomes slow is that the host is overloaded.

Compared with other compiled languages, the advantage of using PHP is that it is easy to maintain. PHP was designed from the ground up to handle HTTP traffic efficiently, requiring less to build than building with other compiled languages. Additionally, merging changes is an easier task as the server does not need to be recompiled and restarted (which is required in case of using compiled binaries - FastCGI).

When written correctly, PHP can scale massively. Other limiting factors include the database engine used.

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