SELECT tags are used in forms to provide dropdown lists. Entris in a dropdown list are defined by OPTION tags, which can provide input values in two ways: Implicit value - Provided as <OPTION>input_value</OPTION>, where input_value will be used as both the dropdown entry and the input value if this entry is selected. Explicit value - Provided as <OPTION VALUE=input_value>display_value</OPTION>, where display_value will be used as the download entry, and input_value will be used as the input value if this entry is selected.The sample PHP script page below is a modified version of submit_comments.php that has one SELECT tag named as "job" using implicit input values and another SELECT tag named s "site" using explicit input values:<?php print("<html><form action=processing_forms.php method=post>"); print("<table><tr><td colspan=2>Please enter and submit your" ." comments about FYICenter.com:</td></tr>"); print("<tr><td>Your Name:</td>" ."<td><input type=text name=name></td></tr>\n"); print("<tr><td>Your Job Title:</td>" ."<td><select name=job>" ."<option>Developer</option>" ."<option>QA Engineer</option>" ."<option>DBA</option>" ."<option>Other</option>" ."</select></td></tr>\n"); print("<tr><td>Rate This Site:</td>" ."<td><select name=rate>" ."<option value=3>Good</option>" ."<option value=2>Average</option>" ."<option value=1>Poor</option>" ."</select></td></tr>\n"); print("<tr><td>Comments:</td>" ."<td><input type=text name=comment></td></tr>\n"); print("<tr><td colspan=2><input type=submit><td></tr></table>\n"); print("</form></html>\n");?>If you submit the form with this page, you will get something like this:Number of values: 4 name = Joe job = Developer rate = 3 comment = I like it.
