Calling a function within foreach? - php

Question

I've been working on a Wordpress theme project over the past few days and I've been stuck on how to get a dynamic options page running properly using OOP (I'm primarily a Theme Developer, not a PHP scripter).
<?php
$footerpage = new optionpage;
$footerpage->title = 'Footer';
$footerpage->titleprint = ' Footer Options';
$footerpage->slug = 'footer';
$footerpage->html = array(
'1' => array(
'type' => 'textarea',
'class' => 'large-text',
'name' => 'html',
'title' => 'HTML',
'description' => 'Type in whatever HTML you\'d like to see in the footer here:',
),
'2' => array(
'type' => 'input',
'class' => 'large-text',
'name' => 'background-color',
'title' => 'Background Color',
'description' => ' Choose a Background Color:'
),
);
class optionpage {
public $title;
public $titleprint;
public $slug;
public $html = array();
......
......
......
public function ab_settings() {
register_setting( $this->slug, 'ab_options');
add_settings_section('ab_section', '', array(&$this, 'ab_do_titleprint'), 'ab_' . $this->slug . '_options', 'ab_options' );
foreach ($this->html as $key => $html) {
add_settings_field( $key, $html['title'], array(&$this, 'ab_do_htmlprint' ), 'ab_' . $this->slug . '_options', 'ab_section');
}
}
public function ab_do_htmlprint() {
$html = $this->html[$key];
?>
<p><?php echo $html['description'] ?></p>
<<?php echo $html['type'] ?>
id="<?php echo $html['id'] ?>"
class="<?php echo $html['class'] ?>"
name="<?php echo $html['name'] ?>">
<?php get_option ($html['name'])?>
</<?php echo $html['type'] ?>>
<?php
}
......
......
?>
In this code example, I'm trying to get the function ab_do_htmlprint to recognize the foreach expressions where it's been called, because the function is going to be called as many times as needed in the foreach loop.
I've tried several things, like appending a variable to the function name, but that would require multiple functions of the same code, just with a different name. I also tried passing various variables by reference and such, however they weren't working either, and I may not have been doing that correctly, if they're even needed.
Anyway to accomplish this efficiently?

Answer 1

If I understand correctly you have an array of values that you want to show in a group on the admin screen as options.
Maybe the shortest example is what i posted here: http://swiftthemes.com/forums/showthread.php?383-SWIFT-on-a-WordPRess-MU-install/page2
p.s. post WordPress questions on http://wordpress.stackexchange.com : more WordPress Experts!

Answer 2

If I understand correctly, you need to pass an argument to ab_do_htmlprint. add_settings_field has parameter for that, do:
add_settings_field( $key, $html['title'], array(&$this, 'ab_do_htmlprint' ), 'ab_' . $this->slug . '_options', 'ab_section', array($key));
then:
public function ab_do_htmlprint($key) {
$html = $this->html[$key];
etc.

Answer 3

I am not familiar with the Wordpress api, so please verify a few assumptions I have. (I know this is not an answer, but I do not want to put as a comment for readability)
1) ab_settings() is called somewhere?
2) Is the section you are having issues with?
foreach ($this->html as $key => $html) {
add_settings_field( $key, $html['title'], array(&$this, 'ab_do_htmlprint' ),
'ab_' . $this->slug . '_options', 'ab_section');
}
3) $key is magically available or do you need to provide it as an argument?
public function ab_do_htmlprint() {
$html = $this->html[$key];`
Also, the format of your ab_do_htmlprint function is very hard to read and could be a source of error. Try using HEREDOC notation or purely PHP strings
ex) Instead of
public function ab_do_htmlprint() {
$html = $this->html[$key];
?>
<p><?php echo $html['description'] ?></p>
<<?php echo $html['type'] ?>
id="<?php echo $html['id'] ?>"
class="<?php echo $html['class'] ?>"
name="<?php echo $html['name'] ?>">
<?php get_option($html['name'])?>
</<?php echo $html['type'] ?>>
<?php
}
as
public function ab_do_htmlprint() {
$html = $this->html[$key];
$output = "<p>{$html['description']}</p>";
$output .= "<{$html['type']} id=\"{$html['id']}\"";
$output .= " class=\"{$html['class']}\"";
$output .= " name=\"{$html['name']}\">";
get_option( $html['name'] );
$output .= "</{$html['type']}>";
echo $output;
}