PHP 7.0.6 Released

    mysqli::debug

    mysqli_debug

    (PHP 5, PHP 7)

    mysqli::debug -- mysqli_debug — Performs debugging operations

    Description

    Object oriented style

    bool mysqli::debug ( string $message )

    Procedural style

    bool mysqli_debug ( string $message )

    Performs debugging operations using the Fred Fish debugging library.

    Parameters

    message

    A string representing the debugging operation to perform

    Return Values

    Returns TRUE.

    Notes

    Note:

    To use the mysqli_debug() function you must compile the MySQL client library to support debugging.

    Examples

    Example #1 Generating a Trace File

    <?php

    /* Create a trace file in '/tmp/client.trace' on the local (client) machine: */
    mysqli_debug("d:t:o,/tmp/client.trace");

    ?>

    See Also

    User Contributed Notes

    Peter
    1 year ago
    can there be more documenation with a small (but working) example script on how to use this ?

    Some issues  (Ive seen the "same" code example in dozens of tutorials):-

    ( I'll use capitals for emphasis only)

    QUESTION: what does D:T:O mean ? UNEXPLAINED.

    QUESTION: Do we *ONLY* use these 3 lines in a self-contained script ? Does this log ALL future MYSQL commands ?

    QUESTION :- Do we put that one line just

    - immediately after we connect to MYSQL ?
    - before we connect to MYSQL ?
    - before our suspected error ?
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