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Home/ Questions/Q 6603113
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Editorial Team
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Editorial Team
Asked: May 25, 20262026-05-25T18:57:52+00:00 2026-05-25T18:57:52+00:00

How do we remove a header (e.g. Last-Modified ) that has already been set

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How do we remove a header (e.g. Last-Modified) that has already been set but not yet sent over the wire?

(It may have been set by Apache, “pre”-PHP, and whatnot.)

I’m currently using PHP 5.2.17 and header_remove is an undefined function.

To be clear, I do not want to send a blank header line like header("Foo-bar:"). I want to completely remove it from the output buffer and send nothing.

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  1. Editorial Team
    Editorial Team
    2026-05-25T18:57:53+00:00Added an answer on May 25, 2026 at 6:57 pm

    Use mod_rewrite and modify .htaccess

    Header unset Last-Modified
    
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