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POHow to retrieve a specific value from MySQL (PHP)
 

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  1. POHow to retrieve a specific value from MySQL (PHP)
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    <p>I am new to PHP and I would like some inputs on this little script. Everything seems to work but I need to know how to retrieve the "id" of the message that is modified.</p> <pre><code>&lt;?php function updatemyinfos() { $con=mysqli_connect("localhost","root","root","dbname"); if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } **$id=** $sql="UPDATE table1 SET message = '$_POST[message]' WHERE id ='$id'"; if (!mysqli_query($con,$sql)) { die('Error: ' . mysqli_error($con)); } echo '&lt;p&gt;Message modifié&lt;/p&gt;'; mysqli_close($con); } if(isset($_POST['updatemessage'])) { updatemyinfos(); } ?&gt; &lt;form action="#" method="post"&gt; &lt;textarea style="resize:none" cols="1" rows="1" name="message"id="textbox"&gt;'.$row['message'].'&lt;/textarea&gt; &lt;input type="submit" value="Soumettre" name="updatemessage" id="updatemessage"&gt; &lt;/form&gt; </code></pre> <p>EDIT : I tried this.. I don't get any error message but the datebase does not update. But I get the "echo '<p>Message modifié</p>"</p> <pre><code>&lt;?php function updatemyinfos($id) { $con=mysqli_connect("localhost","root","root","TP1AlexandreBouletCouture"); if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } $sql="UPDATE table1 SET message = '$_POST[message]' WHERE id ='$id'"; if (!mysqli_query($con,$sql)) { die('Error: ' . mysqli_error($con)); } echo '&lt;p&gt;Message modifié&lt;/p&gt;'; mysqli_close($con); } if(isset($_POST['updatemessage'])) { updatemyinfos($_POST['updatemessage']); } ?&gt; </code></pre>
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