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POMySQLI Count Error
 

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    <p>I have two different functions:</p> <pre><code>function user_count(){ global $db; $query = mysqli_query($db,"SELECT COUNT(user_id) FROM users"); if($result = $query){ $user_count = mysqli_num_rows($result); mysqli_free_result($result); return $user_count; } } </code></pre> <p>In this function, I query the database to tell me how many users there are, and in PHP I use user_count(). The result of this function is 1. Which is correct, because I only have only 1 users in the database at the moment. However when I use the same code for a different function such as:</p> <pre><code>function user_exists($username){ global $db; sanitize($username); $query = mysqli_query($db,"SELECT COUNT(user_id) FROM users WHERE username=".$username) or die ("Doesn't work"); if($result = $query){ $user_exists = mysqli_num_rows($result); mysqli_free_result($result); return $user_exists; } } </code></pre> <p>Not to mention I have also tried to comment out the sanitize($username). But even with it commented out I still am getting an error.</p> <p>And I use the function user_exists("superadmin"), I get the error "Doesn't work". I am wondering what am I doing wrong in the second function where the first function would return the number of rows, where as second function would return an error.</p> <p>I know for certain that:</p> <ol> <li>Database is connecting</li> <li>String sanitization is working</li> <li>User does exists on the database</li> </ol> <p>If would much appreciated if you reply using the procedural style.</p>
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    1. USDaniel
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    1. COWhy don't you try `or die(mysqli_error($db))`, and get some useful information from the database about what happened? I expect it'll be because you need to quote the value you're querying for.
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      1. USandrewsi
    2. COIs `$username` quoted in the `sanitize()` function? If not, your query will fail. `username = '$username'`
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      1. USMichael Berkowski
    3. CO$username is a variable, and is getting passed in from the function definition, so that shouldn't even matter.
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      1. USDaniel
 

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