Form - error code help

[denzlite]

I'm trying to create a nice php form that remembers what people enter in fields: text, radio, select, etc.

So I got this from a book:

Text:

<input type="text" name="ui_id" value="<?php if (isset($POST['ui_id'])) {
echo htmlentities($POST['ui_id'], ENT_COMPAT, 'UTF-8');} ?>" size="32" />

Radio:

<select name="tax_status">
<option value="0" <?php if (!(strcmp(0, htmlentities($POST['tax_status'], ENT_COMPAT, 'utf-8')))) {echo "SELECTED";} ?>>Single</option>
<option value="1" <?php if (!(strcmp(1, htmlentities($POST['tax_status'], ENT_COMPAT, 'utf-8')))) {echo "SELECTED";} ?>>Married</option>
</select>

Well I'm getting notices that these variables are undefined and the code seems rather unwieldy... is there a way to put this stuff into a function and then call something simpler in the from code itself? Is htmlentities a little over kill?

THanks

[djjjozsi]

hello, i've done a tutorial about how to build functions to make forms.

the code from the tutorial is downloadable from here:

Here

hello, jjozsi

[djjjozsi]

you can build an array to make the list, or build a look-up table, and pull the key->value pairs from a table.

<?php

function ht( $var )
{
    return htmlspecialchars( strip_tags( $var ) );
}

function listbox( $var , $array )
{
    $array = array_map( "ht" , $array );
    print "<select name=\"$var\">\r";

foreach( $array as $key => $value ) {
    if ( isset( $_POST["$var"] ) AND $key == $_POST["$var"] )
        $selected = ' selected="selected"';
    else
        $selected = '';

    print "\t<option value=\"$key\"$selected>$value</option>\r";
}
print '</select>';
}

print '<form action="' . basename( $_SERVER["PHP_SELF"] ) . '" method="POST">';
listbox( "tax_status", array( "", "Married", "Single" ) );
print '<br /><input name="submit" type="submit" value="submit"></form>';

?>

[denzlite]

djjjozsi - thanks man - it's going to take me a while to digest that, but that's exactly the kind of thing i was looking for - trying to get more efficient

[denzlite]

how would you re/purpose for drawing options from database?

[djjjozsi]

denzlite;10913922 wrote:

how would you re/purpose for drawing options from database?

in the today's tutorial i will make listbox from database 🙂
i send the link as soon i could.