mysqli - Trying to understand 'mysqli_fetch_array' I fail to run an example -

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The following code is the easiest, I can understand how to work with 'mysqli_fetch_array'. 

  & lt ;? Php is required ('mysqli_connect.php'); $ Sql ​​= "SELECT 'fname', 'email', 'pass' FROM 'list'"; $ Line = mysqli_fetch_array ($ result, MYSQLI_NUM); While ($ line! == faucet) {echo $ row [0] ' '$ Line [1]' '. $ Line [2]; Echo & lt; Br / & gt; '; } Mysqli_close ($ dbcon); ? & Gt;

This code produces the following error message: 

  Warning: mysqli_fetch_array () parameter 1 is expected to be mysqli_result, given in Boolean C : \ Xampp \ htdocs \ Test \ mysqli_connect_test.php on line 5

Can someone advise me how this code works? What does "MYSQLI_NUM" mean? Thank you

Observe that your code is very wrong: 

  Requires 'mysqli_connect.php'; $ Sql ​​= "select fname`,` email`, `pass` `` to list ''; // # 1 $ result = $ dbcon-> Query ($ sql); // # 2 while ($ line = $ result-> fetch_array (MYSQLI_NUM)) // # 3 {resonant "{$ row [0]}. {$ Row [1]}. {$ Row [2]} & Lt; br & gt; "; } $ Dbcon- & gt; Close ();

Note # 1: '' Invalid cover for mysql object names I '' is used to wrap strings only should be done. Also, you do not need to wrap them until the name of the object is reserved.

Note # 2: You must execute the query to generate $ result . Note # 3: You should run fetch_array () each loop and can not change the value of $ row otherwise just once And this is an infinite loop.

Consider using mysqli class methods instead of stand-alone tasks. The code cleaner looks more understandable. Functions like mysqli_query () are only for backward compatibility with call_user_func () and call_user_func_array () .


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