PHP not receiving $_REQUEST value

[HeidiR]

Hello all,

I have a simple test form below with two submit buttons. One standard text and the other is an image. When, submitting via the standard text button, the value "testval" (from $REQUEST['cmd']) is displayed (echoed) as expected. However, when submitting via the image button, the value of $REQUEST['cmd'] is blank and noting is displayed. What am I missing?

Thanks,

HeidiR

<?php

echo("CMD:" . $_REQUEST['cmd']);

$str = "<br /><form method=post action=" . $PHP_SELF . ">";
$str .= "<table>";
$str .= "<tr><input name=cmd type=image value='testval' src='../images/email2.gif'></td></tr>";
$str .= "<tr><input name=cmd type=submit value='testval'></td></tr>";
$str .= "</table>";
$str .= "</form>";

echo ($str);
?>

[djjjozsi]

use $_SERVER['PHP_SELF'] server variable for that.

and where is the " sign from the forms?

example:

<?

if($_POST["command"])
print "Command:".$_POST["command"];


print '<form name="form" method="post" action="'.$_SERVER['PHP_SELF'].'">
<table border="1" cellspacing="5" cellpadding="5">
<tr>
<th scope="row">Command</th>
<td><input type="text" name="command"></td>
</tr>
<tr>
<th scope="row">&nbsp;</th>
<td><input type="submit" name="Submit" value="Submit"></td>
</tr>
</table>
 </form>';

HeidiR;10890914 wrote:

Hello all,

I have a simple test form below with two submit buttons. One standard text and the other is an image. When, submitting via the standard text button, the value "testval" (from $REQUEST['cmd']) is displayed (echoed) as expected. However, when submitting via the image button, the value of $REQUEST['cmd'] is blank and noting is displayed. What am I missing?

Thanks,

HeidiR

<?php

echo("CMD:" . $_REQUEST['cmd']);

$str = "<br /><form method=post action=" . $PHP_SELF . ">";
$str .= "<table>";
$str .= "<tr><input name=cmd type=image value='testval' src='../images/email2.gif'></td></tr>";
$str .= "<tr><input name=cmd type=submit value='testval'></td></tr>";
$str .= "</table>";
$str .= "</form>";

echo ($str);
?>

[NogDog]

Image-type input elements do not behave the same as submit-type input elements, and there is also some variance between browsers in what they do. Most/all browsers will send the X and Y coordinates of the clicked location of the image, but only some browsers will also send any value associated with that input element.

So long story short, you cannot depend upon receiving the value from an image-type input. Either put the desired name/value pair into a hidden input element, or use a button element instead of an input element for the submit button.

[HeidiR]

NogDog;10890932 wrote:

Image-type input elements do not behave the same as submit-type input elements, and there is also some variance between browsers in what they do. Most/all browsers will send the X and Y coordinates of the clicked location of the image, but only some browsers will also send any value associated with that input element.

So long story short, you cannot depend upon receiving the value from an image-type input. Either put the desired name/value pair into a hidden input element, or use a button element instead of an input element for the submit button.

Thanks for your quick reply guys. I tried $_SERVER['PHP_SELF'] without success. However, after additional research and testing, I learned that this is an issue with IE not sending the value attribute with an image submit button, as NogDog hinted to. The solution I implemented is:

if($cmd == '' AND is_numeric($_REQUEST['cmd_x'])) $cmd = "testval";

Thanks again for all your help.

HeidiR