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Generate A Select Box For A HTML Form

21st December 2007 - 2 minutes read time

Here is a function to generate a select box for a HTML form. The three parameters are:

  1. $name : The name of the select, this will appear in the "name" attribute.
  2. $options : An associative array containing all of the options.
  3. $default : The option that will be selected as default.

function generateSelect($name,$options,$default=''){
  $html = '<select name="'.$name.'">';
  foreach ($options as $value => $label) {
    $html .= '<option value="' . $value . '">' . $label . '</option>';
  }
  $html .= '</select>';
  return $html;
}

You can call the function like this:


echo generateSelect('selectPreference',array('yes'=>'yes','no'=>'no'),'yes');

Which produces the following HTML as output:

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Printing Arrays Using print_r()

20th December 2007 - 3 minutes read time

When debugging PHP code the print_r can be useful if you want to know what an array or object contains. It will take any variable as input and will print off as much information as it can about that variable. The following code.


$array = array(1,34,6,2325,5,34,2);
echo "<pre>";
print_r($array);
echo "</pre>";

Will produce the following result.


Array
(
[0] => 1
[1] => 34
[2] => 6
[3] => 2325
[4] => 5
[5] => 34
[6] => 2
)

Notice the use of the pre tags. This is to allow the output to be properly formatted on screen, otherwise it looks messy. Of course you could just view source, but I find the formatted output easier on the eye. You could also write it out like this:

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Linking An RSS Or Atom Feed to a HTML Document

20th December 2007 - 2 minutes read time

Adding a hyper link for an RSS or Atom feed on your web page works, but that's not all you can do. By adding a link to the head section of the page you can allow your users an alternative method of picking up your feed.

To add an RSS feed use this.


<link rel="alternate" type="application/rss+xml" href="http://www.example.com/rssfeed.xml" />

To add an Atom feed use this.


<link rel="alternate" type="application/atom+xml" href="http://www.example.com/blog/wp-atom.php" />

These are both XHTML examples. To do this in HTML just remove the slash on the right hand side like this.