Fatal error: uncaught typeerror: mysqli_fetch_all()

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Fatal error: Uncaught TypeError: mysqli_fetch_all(): Argument #1 ($result) must be of type mysqli_result, bool given in C:\xampp\htdocs\Tutorial\task\showDetails.php:15 Stack trace: #0 C:\xampp\htdocs\Tutorial\task\showDetails.php(15): mysqli_fetch_all(false, 1) #1 {main} thrown in C:\xampp\htdocs\Tutorial\task\showDetails.php on line 15

What I have tried:

$user_details = mysqli_fetch_all($result, MYSQLI_ASSOC) ;

Posted 20-Feb-23 0:01am

pooja gole

Updated 20-Feb-23 0:13am

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Dave Kreskowiak 20-Feb-23 9:09am

Without you posting the code that setup and executed the SQL query, it's impossible for anyone to tell you what you did wrong.

The "Improve question" button is there for a reason.

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Richard Deeming · Answer 1 · 2023-02-20T00:13:00

Read the documentation, or any of the dozens upon dozens of questions where this error message has been posted:

PHP: mysqli::query - Manual[^]:
Returns false on failure.

Your query has failed. You need to debug your code to find out why.

We can't do that for you. We don't have access to your database, and you haven't shown any of your code.

One common cause is if you've written code which is vulnerable to SQL Injection:
PHP: SQL Injection - Manual[^]