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POPHP Warning : cannot modify header information
 

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  1. POPHP Warning : cannot modify header information
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    <p>I have an php login function. When I try to logged in with correct user, it show the error like this : </p> <p>Warning: Cannot modify header information - headers already sent by (output started at /home/hapshou1/public_html/index.php:15) in /home/hapshou1/public_html/index.php on line 150</p> <p>-</p> <pre><code>include "config.php"; if($_SERVER["REQUEST_METHOD"] == "POST") { function antiinjection($data) { $filter_sql = mysql_real_escape_string(stripslashes(strip_tags(htmlspecialchars($data,ENT_QUOTES)))); return $filter_sql; } $username = antiinjection($_POST['username']); $pass = antiinjection($_POST['password']); $login=mysql_query("SELECT username, password FROM user WHERE (username='$username' OR email='$username') AND password='$pass'"); $found=mysql_num_rows($login); $r=mysql_fetch_array($login); if ((!empty($username)) &amp;&amp; (!empty($pass))) { if ($found &gt; 0) { session_register("username"); session_register("password"); $_SESSION[username] = $r[username]; $_SESSION[password] = $r[password]; date_default_timezone_set("Asia/Jakarta"); $date_log = date("j-F-Y, G:i "); mysql_query("update user set status='online', date_logged_in='$date_log' WHERE username='$_SESSION[username]'"); header('location:home'); } else { echo '&lt;div class="error_log"&gt; &lt;p&gt;Wrong username or password. Please try again.&lt;/p&gt; &lt;/div&gt;'; } } else { echo ' &lt;div class="error_log"&gt; &lt;p&gt;Username and password are required.&lt;/p&gt; &lt;/div&gt; '; } } </code></pre> <p>What's wrong with my code?</p>
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    1. USNaga Botak
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      1. VTUpMod
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      1. USRakesh
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    3. VO
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      1. VTDownMod
    1. COMaybe you have printed out some text before the `header()` function? This should have caused the error.
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      1. USStefan Fandler
    2. COLine 15 of index.php is producing output. What is at that line?
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      1. USslugonamission
    3. CO+1 for sharing "antiinjection", made my day.
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      1. USLouis
 

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