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Home/ Questions/Q 785945
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Editorial Team
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Editorial Team
Asked: May 14, 20262026-05-14T20:57:31+00:00 2026-05-14T20:57:31+00:00

I have a largish array of string that I want to use as a

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I have a largish array of string that I want to use as a look-up.

I am using in_array(), but I suspect its doing a simple loop through – does anyone know whether the in_array() algo uses a bsearch algo?

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  1. Editorial Team
    Editorial Team
    2026-05-14T20:57:32+00:00Added an answer on May 14, 2026 at 8:57 pm

    in_array() is O(n).
    Also see List of Big-O for PHP functions

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