Tag Archives: PHP

Expose Namespaced PHP Classes at the Root

First off, I sincerely hope that nobody ever finds this blog post useful. Alas, I’m sure there is some soul out there in a situation similar to my own: hang in there friend.

If you’ve been writing PHP for any length of time, you know how easy it is to write bad PHP: don’t bother with classes, include all your functions in a single 6,000 line file, and certainly don’t set up a folder structure in your git repository.

So, what do you do when you want to start bringing order to the chaos?

I found myself in a situation where I had a few hundred PHP files in the root of a repository; each file defining a class. Unfortunately, none were in a namespace.

Additionally, these were accessible through a manually-defined spl_autoload_register function which was part of a common.php file that got require_once‘d from tons of different places. Some of the places requiring this file were even outside the repository and completely unknown to me.

I wanted to clean things up, but without breaking unknown code.

The first thing I wanted to do was establish a namespace for these classes and to introduce a strategic folder hierarchy. A few google searches quickly proved my suspicion: you can’t present classes belonging to a namespace as if they were available at the root namespace (well, you can with use, but that is scoped only to the current file; I don’t want to change hundreds of files). See here and here

This would be a problem if I want to move in-use classes inside a namespace.

But then I discovered this comment and started musing: “hmmm, I can create a class in the root namespace that extends a class in a child namespace” and “spl_autoload_register lets me try to find a class before PHP gives up” and “what if I could enumerate all classes in a defined namespace and dynamically instantiate a root-namespace proxy?”

And that’s exactly what I did:

// since we tons of legacy files requiring common.php, 
// create an autoload proxy for root->ModelV1 until 
// we can add "use" statements to all necessary locations
spl_autoload_register(function ($class) {
	if (strpos($class,"\\")!== false) {
		// only attempt to autoload root-namespace'd classes
		return false;
	$namespacesAvailableAtRoot = array("ModelV1");
	foreach ($namespacesAvailableAtRoot as $namespace) {
		if (class_exists(	$namespace."\\" . $class)) {
			$str = sprintf('Class %s extends %s\%s {}', $class, $namespace, $class);
			// this is uugly.  Yes; we're eval-creating new PHP classes at runtime where 
			// the new class exists in the root namespace and extends the class implementation from 
			// ModelV1.
			// Borrowed from: https://stackoverflow.com/a/13504972
			// and from: https://stackoverflow.com/a/19890311
			return true;
	return false;

Again, I hope absolutely nobody finds this useful. In fact, I hope to thoroughly expunge this code In the Near Future ™ (but we all know how that goes)


Troubleshooting OwnCloud index.php

Sometimes OwnCloud includes “index.php” in the shared links.  It’s annoying and ugly.  Here’s some things to check:

  1. Is mod rewrite enabled in the apache config?
    <Directory /var/www/html/owncloud/>
     Options Indexes FollowSymLinks MultiViews
     AllowOverride All
     Order allow,deny
     Allow from all
     <IfModule mod_dav.c>
      Dav off
     SetEnv HOME /var/www/html/owncloud
     SetEnv HTTP_HOME /var/www/html/owncloud
  2. Is the .htaccess correct?  The ###DO NOT EDIT### Section must contain this line (Generally the last line in the IfModule for mod_rewrite
    RewriteRule .* index.php [PT,E=PATH_INFO:$1]
  3. .htaccess must also contain this block for the web app to generate URLs without “index.php”
    <IfModule mod_rewrite.c>
      RewriteBase /
      <IfModule mod_env.c>
        SetEnv front_controller_active true
        <IfModule mod_dir.c>
          DirectorySlash off

Those are my findings for making sure OwnCloud URLs stay pretty.

Hiding Featured Images in WordPress Blog Posts

My wife recently asked me if she could hide the featured images in her blog posts.  She wanted the photos displayed on her home page and post listings, but not on the actual page for the blog post – She wanted to actually insert the image to her post at some point into the post:

I did some Googling, and found that most themes implement a “single.php” file.  In this file is a definition for how the individual blog posts render:

<?php if (is_single()) : ?>
<article id=”post-<?php the_ID(); ?>” <?php post_class(); ?>>
<?php the_post_thumbnail(‘featured’); ?>
<div id=”post-content”>
<?php the_title(‘<h1 id=”post-title”>’, ‘</h1>’); ?>

Of interest to me was the line

<?php the_post_thumbnail(‘featured’); ?>

Which I simply commented out:

<?php #the_post_thumbnail(‘featured’); ?>

And now, the featured image is not displayed at the top of the post, and she is free to insert the image anywhere she wishes:


So, with that, you should check out her blog: Anna’s Alcove