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Editorial Team
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Asked: 2026-05-31T22:03:52+00:00

For sending HTML document information such as content-encoding , charset , date , last-modified

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For sending HTML document information such as content-encoding, charset, date, last-modified, etc we can equally use PHP header header() OR HTML meta http-equiv <meta http-equiv=... />. Which is practically better? Can anyone elaborate the pros and cons of both methods?

I wonder if each of them has a better performance for specific application (e.g. one is better for defining charset and the other for content-encoding?!?

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1 Answer

  1. Editorial Team

    Use real HTTP headers

    • HTTP headers take priority over <meta http-equiv
    • HTTP headers can be used by any HTTP client (instead of just those which parse HTML)
    • HTTP headers can be used by clients that make a HEAD request
    • Only a limited subset of HTTP headers are supported (by browsers) in <meta http-equiv

    There is an argument to be made for including the charset information via a meta element as well (since that will be preserved if the document is saved and the copy is then accessed from the filesystem instead of over HTTP).

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