passing an html form array to php file - php

Question

I am trying to get information from an html form and pass it to my php file as an array
here is a snippet of the code for my html form:
<form action ="upload.php" method="post">
Name<input id= "n" type="text" name="info[name]" /><br />
Address: <input id="a" type = "text" name="info[address]" /><br />
City: <input id="c" type = "text" name="info[city]" /><br />
</form>
then in my php file I tried to print the content:
$information = $_POST['info'];
echo $information['name'];
but nothing gets printed to the page

Answer 1

I don't think you can do that (shove it all into a separate array (apart from $_POST)) directly with your HTML. You'll have to do some extra PHP work at the beginning.
Firstly, for the love of all that is holy, make your HTML input names cleaner:
<form action ="upload.php" method="post">
Name<input id= "n" type="text" name="info_name" /><br />
Address: <input id="a" type = "text" name="info_address" /><br />
City: <input id="c" type = "text" name="info_city" /><br />
</form>
And now, for the PHP:
//this is how I would do it, simply because I don't like a bunch of if/elseifs everywhere..
//define all the keys (html input names) into a single array:
$infoKeys[0]='name';
$infoKeys[1]='address';
$infoKeys[2]='city';
//define your end array
$information=array();
//now loop through them all and if they're set, assign them to an array. Simple:
foreach ( $infoKeys as $val ){
if(isset($_POST['info_'.$val])){
$information[$val]=$_POST['info_'.$val];
}//end of isset
else{
$information[$val]=null;
}//end of no set (isset===false)
}//end of foreach
//now, when you want to add more input names, just add them to $inputKeys.
//If you used the if/elseif ways, your doc would be plastered in ifs and elseifs.
//So i personally think the looping through the array thing is neater and better.
//but, feel free to change it, as I have a feeling I'll have allot of critics because of this method.
// anyway, that should do it. The var $information should be an array of all your 'info_' html inputs....
Happy coding!