PHP/MySQL An issue with echoing comments [TODO: DELETE] [closed] - php

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I got this comment viewer script. And I'm requesting help to find an issue why it's not working. PHP doesn't show any errors. I don't know what wrong with it.
My MySQL databases looks like this:
comments { authorid, content, _when, }
users { id, firstname, name, nickname, password }.
echo "<div id='comments'>";
$sql_comments = "SELECT * FROM table.comments";
$comments = $conn->query($sql_comments);
$sql_2 = "SELECT id, firstname, name, nickname, password, type FROM users.users";
$conn2_2 = $conn->query($sql_2);
$row6 = $conn2_2 -> fetch_array();
while( $row5 = $comments -> fetch_array() && $id_users = $row6["id"] &&
$firstname_users = $row6["firstname"] && $name_users = $row6["name"]) {
if( $id_users == $row5["authorid"] ) {
echo "<div class=\"infoComments\">";
echo "<div class=\"commentsImg\"><img src=\"imgs/randomProfileImgs/$ranNum.png\" id=\"profileImg\" /></div>";
echo "<div class=\"commentsInfo\">" . $firstname_users . "<br />" . $name_users . "</div>";
echo "<div class=\"commantsContent\">" . $row5["content"] . "</div>";
echo "</div>";
};
};
echo "</div>";
Any ideas?

Answer 1

You state that your users table contains the following columns.
id, firstname, name, nickname, and password
You then proceed to put together a query that attempts to pull the type column out.
// bad sql query, tries to get 'type' but that column doesnt exist
$sql_2 = "SELECT id, firstname, name, nickname, password, type FROM users.users";
// query() will return false because theres a problem
$conn2_2 = $conn->query($sql_2);
// this is now a boolean because of the above issue
$row6 = $conn2_2 -> fetch_array();
What you should put after the query() call is this
if (!$conn2_2) {
printf("Errormessage: %s\n", $conn->error);
exit();
}
To avoid this type of thing in the future, do yourself a huge favor and make sure php can tell you when theres a problem by putting this at the start of your scripts.
error_reporting(-1);
ini_set('display_errors', 'On');
Or, you may want to make sure that the user you're connecting to mysql with has access to the databases table, AND users