Question

I’m getting an error Warning: implode() [function.implode]: Invalid arguments passed in /home/social/public_html/form_test.php on line 13 I’m not sure why i’m getting this error.

if (is_array($_POST['wmeet']))
    foreach ($_POST['wmeet'] as $key => $value) 
    $_POST['wmeet'][$key] = mysql_real_escape_string(stripslashes($value));
    $wmeet = implode(" ",$_POST['wmeet']);

    echo '<pre>'; print_r($wmeet); echo '</pre>';

Answer 1

You are not using braces. When you check is_array, the if statement only applies to the following line (the for each). The for each is only being applied to the following line as well, then the if block ends.

This means that when you use implode(), it is outside of the if block, and therefore not ensuring that your argument is an array. You should look at Alex’s answer and adjust your code accordingly, so that the implode() line is within the if block.

Your code right now is functioning like this:

if (is_array($_POST['wmeet'])) {
    foreach ($_POST['wmeet'] as $key => $value) {
        $_POST['wmeet'][$key] = mysql_real_escape_string(stripslashes($value));
    }
}

$wmeet = implode(" ",$_POST['wmeet']);

echo '<pre>'; print_r($wmeet); echo '</pre>';

When it should be like this:

if (is_array($_POST['wmeet'])) {
    foreach ($_POST['wmeet'] as $key => $value) {
        $_POST['wmeet'][$key] = mysql_real_escape_string(stripslashes($value));
    }

    $wmeet = implode(" ",$_POST['wmeet']);
    echo '<pre>'; print_r($wmeet); echo '</pre>';
}