Question

I have inserted this form with multiple checkbox items which collects some values, What i need to do is echo this values as a string separated by a comma, but i’m getting error in the implode function, it says Invalid arguments passed.

Can you please see the code?

if(isset($_POST['Submit'])) {
    echo "<pre>"; print_r($_POST);
    $checked = mysql_real_escape_string(implode(',', $_POST['checkbox'])); 
    echo $checked;
}
?>

HTML Form

<form action="checkbox.php" method="post">
<input type="checkbox" name="checkbox[]" value="hostess_name">
<input type="checkbox" name="checkbox[]" value="hostess_familyname_en">
<input type="checkbox" name="checkbox[]" value="hostess_id">
<input type="checkbox" name="checkbox[]" value="hostess_firstname_en">
<br>
<br>
<input type="submit" name="Submit" value="Submit">
</form>

Answer 1

try this

if(isset($_POST['Submit'])) {
    echo "<pre>"; print_r($_POST);
    $checked = implode(',', $_POST['checkbox']); 
    echo $checked;
}

here’s the exact stuff I put in my test.php

<?php
if(isset($_POST['Submit'])) {
    echo "<pre>";
    $checked = implode(',', $_POST['checkbox']);
    echo $checked;
}

?>
<form action="test.php" method="post">
<input type="checkbox" name="checkbox[]" value="hostess_name">
<input type="checkbox" name="checkbox[]" value="hostess_familyname_en">
<input type="checkbox" name="checkbox[]" value="hostess_id">
<input type="checkbox" name="checkbox[]" value="hostess_firstname_en">
<br>
<br>
<input type="submit" name="Submit" value="Submit">
</form>