Creating clickable link from form variable

Question

Working with a dynamic page that 1. generates a list of files in the folder 2. makes a selection box of that list 3. Provides a clickable link to selected file

Steps 1 and 2 working like a charm, but I just can't seem to pass that variable through and make it a clickable link.

Here's my code:

<?php

// Step 3. Create clickable link from selection
if (isset($_POST['submit'])) {

$optionVal = $_POST[$file];
echo '<a href="'.$optionVal.'">Click to download: <strong>'.$optionVal.'</strong></a>';
} else {

// Step 1: Get file listing 
$show_path = 1;   # Show local path.
$show_dotdirs = 1;   # Show '.' and '..'.
$path = substr($_SERVER['SCRIPT_FILENAME'], 0, strrpos($_SERVER['SCRIPT_FILENAME'], '/') + 1);

$dirs = array();
$files = array();

$dir = dir($path);
while ($entry = $dir->read()) {
    if (($entry != '.') and (substr($entry, -4) != '.php')) {
        if (is_dir($entry)) {
            if (($entry != '..') or $show_dotdirs){
                $dirs[] = $entry;
            }
        } else {
            $files[] = $entry;
        }
    }
}
$dir->close();
?>
<form action="pagelist.php" method="post">
<label>Select your lab: <select name="lab">
<?php
// Step 2: Make file listing in to selection box
sort($files);
foreach ($files as $file) {
    echo('<option value="'.$file.'">'.$file.'</option>');
}
?>
</select></label>
<input name="submit" type="submit" value="Go">

</form>

<?php } ?>

Alessandro Desantis · Accepted Answer · 2011-10-10 15:24:12Z

1

You should change this line:

$optionVal = $_POST[$file];

Into:

$optionVal = $_POST['lab'];

answered Oct 10, 2011 at 15:24

Alessandro Desantis

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Comments

daiscog · Accepted Answer · 2011-10-10 15:26:00Z

1

$optionVal = $_POST[$file]; is your problem. This should probably be $optionVal = $_POST['lab'];

answered Oct 10, 2011 at 15:26

daiscog

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