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POHow do you update existing cell in a row in the MySQL table using PHP
 

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  1. POHow do you update existing cell in a row in the MySQL table using PHP
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    <p>I have MySQL Table that has two columns (name and description) in which I have already inserted some data using HTML Form. </p> <p>However I'm trying to figure out if there is a way if a user enters existing name and different description so that it updates the description for that existing name instead of adding new row with existing name and new description.</p> <p>Here is my PHP code:</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;meta charset = "utf-8"&gt; &lt;title&gt;Search Results&lt;/title&gt; &lt;style type = "text/css"&gt; body { font-family: sans-serif; } table { background-color: lightblue; border-collapse: collapse; border: 1px solid gray; } td { padding: 5px; } tr:nth-child(odd) { background-color: white; } &lt;/style&gt; &lt;/head&gt; &lt;body&gt; &lt;?php $db_connect = mysql_connect("hostname", "name", "password"); $db_query = "SELECT * FROM urltable"; // connect to MySQL if (!$db_connect) { die("Could not connect to database"); } // open Products database if ( !mysql_select_db( "urls", $db_connect ) ) die( "Could not open products database &lt;/body&gt;&lt;/html&gt;" ); $db_insert = "INSERT INTO urltable(URL, description) VALUES ('$URL', '$Description')"; $db_insert_data = mysql_query($db_insert); if ($db_insert_data) { echo("&lt;br&gt;Input data is Added&lt;/br&gt;"); } else { echo("&lt;br&gt;Input data not Added&lt;/br&gt;"); } // query Products database if ( !( $result = mysql_query( $db_query, $db_connect ) ) ) { print( "&lt;p&gt;Could not execute query!&lt;/p&gt;" ); die( mysql_error() . "&lt;/body&gt;&lt;/html&gt;" ); } // end if mysql_close( $db_connect ); ?&gt;&lt;!-- end PHP script --&gt; &lt;table border="1"&gt; &lt;/br&gt; &lt;caption&gt;URL TABLE&lt;/caption&gt; &lt;/br&gt; &lt;?php // build table headings print( "&lt;tr&gt;" ); print("&lt;th&gt;URL&lt;/th&gt;"); print("&lt;th&gt;Description&lt;/th&gt;"); print( "&lt;/tr&gt;" ); // fetch each record in result set while ( $row = mysql_fetch_row( $result ) ) { // build table to display results print( "&lt;tr&gt;" ); foreach ( $row as $value ) print( "&lt;td&gt;$value&lt;/td&gt;" ); print( "&lt;/tr&gt;" ); } // end while ?&gt;&lt;!-- end PHP script --&gt; &lt;/table&gt; &lt;/br&gt; &lt;a href="insert.html"&gt;Home&lt;/a&gt;&lt;/br&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Right now it will just insert any data that is entered, but I can't figure out how to do the update on description only if the existing name is entered. Could I use conditional statement to check for existing names?</p>
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