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POretrieve data from database mysql not working
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  1. POretrieve data from database mysql not working
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    copied!<p>Hi i am using the html dropdown's onchange event using ajax</p> <p>In the code i am using, should get the address column value when i change the drop down.</p> <p>but it is not working.What may have gone wrong?</p> <p>here is the code </p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script&gt; function showUser( str ) { if ( str == "" ) { document.getElementById("txtHint").innerHTML=""; return; } if ( window.XMLHttpRequest ) { // code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else { // code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange = function() { if ( xmlhttp.readyState==4 &amp;&amp; xmlhttp.status == 200 ) { document.getElementById("txtHint").innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET", "getuser.php?q=" + str, true); xmlhttp.send(); } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form&gt; &lt;?php mysql_connect('localhost', 'tiger', 'tiger'); mysql_select_db('theaterdb'); $sql = "select theater_name from theater;"; $result = mysql_query($sql); echo "&lt;select name='theater_name' id='course' onchange='showUser(this.value);'&gt;"; while ( $row = mysql_fetch_array( $result ) ) { echo "&lt;option value='" . $row['theater_name'] ."'&gt;" . $row['theater_name']. "&lt;/option&gt;"; } echo "&lt;/select&gt;"; ?&gt; &lt;/form&gt; &lt;br&gt; &lt;div id="txtHint"&gt;&lt;b&gt;Info&lt;/b&gt;&lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Code for getuser.php</p> <pre><code>&lt;?php $q = $_GET["q"]; $con = mysqli_connect("localhost", "tiger", "tiger", "theaterdb"); if ( !$con ) { die('Could not connect: ' . mysqli_error( $con ) ); } mysqli_select_db( $con ); $sql = "SELECT address FROM theater WHERE theater_name = '".$q."'"; $result = mysqli_query( $con, $sql ); echo "&lt;table border='1'&gt; &lt;tr&gt; &lt;th&gt;Firstname&lt;/th&gt; &lt;/tr&gt;"; while( $row = mysqli_fetch_array( $result ) ) { echo "&lt;tr&gt;"; echo "&lt;td&gt;" . $row['address'] . "&lt;/td&gt;"; echo "&lt;/tr&gt;"; } echo "&lt;/table&gt;"; mysqli_close($con); ?&gt; </code></pre>
 

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