PHP Archives | Page 2 of 13 | portalZINE NMN | Development meets Creativity

23. January 2018

Cleaning up the WordPress Feed (Validation)

When using your main content feed to share posts via buffer or other services, it is crucial that your feed validates cleanly.

There are always things in the generated WordPress content that can break your feed validation. Here some things to cleanup or alter your delivered feed content.

CONDITIONAL TAGS

is_feed()
Check for syndication request. This tag is not typically used by users; it is used internally by WordPress and is available for Plugin Developers.

Check for feed syndication in your themes functions.php

if (is_feed()) {
    /.. tweaks go here ../
}

if (is_feed()) {

/.. tweaks go here ../

}

REMOVE IFRAMES

function rss_noiframe($content) {
        
    $content = preg_replace( '/<iframe(.*)\/iframe>/is', '', $content );

    return $content;
}

add_filter('the_excerpt_rss', 'rss_noiframe');
add_filter('the_content_feed', 'rss_noiframe');

function rss_noiframe($content) {

$content = preg_replace( '/<iframe(.*)\/iframe>/is', '', $content );

return $content;

}

add_filter('the_excerpt_rss', 'rss_noiframe');

add_filter('the_content_feed', 'rss_noiframe');

REMOVE / DISABLE COMMENTS

function rss_nocomments($content) {
    
     global $post;
      $post->comment_status="closed";
   
  
}

add_filter('the_excerpt_rss', 'rss_nocomments');
add_filter('the_content_feed', 'rss_nocomments');

function rss_nocomments($content) {

global $post;

$post->comment_status="closed";

}

add_filter('the_excerpt_rss', 'rss_nocomments');

add_filter('the_content_feed', 'rss_nocomments');

REMOVE RESPONSIVE IMAGES

The sizes attribute breaks feed validation, here how to clean it up.

function no_responsive_image_feeds() {
    add_filter( 'max_srcset_image_width', function() {
       return 1;
    } );
}

add_action('rss2_head', 'no_responsive_image_feeds' );
add_action('atom_head', 'no_responsive_image_feeds' );
add_action('rss_head', 'no_responsive_image_feeds' );

function no_responsive_image_feeds() {

add_filter( 'max_srcset_image_width', function() {

return 1;

} );

}

add_action('rss2_head', 'no_responsive_image_feeds' );

add_action('atom_head', 'no_responsive_image_feeds' );

add_action('rss_head', 'no_responsive_image_feeds' );

INCLUDE PAGES IN POST FEED

if (is_feed()) {
function feedFilter($query) {
	if ($query->is_feed) {
		$query->set('post_type','any');
		}
	return $query;
}
add_filter('pre_get_posts','feedFilter');
}

if (is_feed()) {

function feedFilter($query) {

if ($query->is_feed) {

$query->set('post_type','any');

}

return $query;

}

add_filter('pre_get_posts','feedFilter');

}

ADJUST AMOUNT OF POSTS

if (is_feed()) {

function feedFilter($query) {
	if ($query->is_feed) {
		$query->set('posts_per_page','11');
	}
 
	return $query;
}
add_filter('pre_get_posts','feedFilter');

}

if (is_feed()) {

function feedFilter($query) {

if ($query->is_feed) {

$query->set('posts_per_page','11');

}

return $query;

}

add_filter('pre_get_posts','feedFilter');

}

LIMIT BY CATEGORY

if (is_feed()) {
function feedFilter($query) {
	if ($query->is_feed) {
		$query->set('category_name', 'my-special-cat');
	}
 
	return $query;
}
add_filter('pre_get_posts','feedFilter');
}

if (is_feed()) {

function feedFilter($query) {

if ($query->is_feed) {

$query->set('category_name', 'my-special-cat');

}

return $query;

}

add_filter('pre_get_posts','feedFilter');

}

Enjoy coding …

30. August 2017

GreenApe is breathing again

After some downtime, GreenApe is breathing again. I revived the brand with a good friend of mine and we will be reopening shop options shortly.

Michael and I have been friends for a long time. We have been working on many different projects over the years.

He launched GreenApe in 2011 and I helped him with his first steps. A couple of months ago we decided to merge our competences and expand what GreenApe offers and stands for.

From the website: “The GreenApe brand was established in 2011. GreenApe’s career began with the 1st Single Malt Whisky Coffee.

As the first of its kind, our coffee is refined with Original Single Malt Whisky. To this day, he pampers many connoisseurs and gourmets with his unique taste. Now there is another reason to rejoice.

From now on, we are continuously expanding the GreenApe product world with several stylish gadgets and useful accessories. For you this means that you will be able to discover even more beautiful, special or practical things in the future.“

GreenApe is all about lifestyle & leisure products, fun gadgets and unique food & drinks.

18. June 2017

Unicode slugs with ease

What is a slug ?
A slug is a part of a URL which identifies a particular page on a website in a form readable by users. It’s the nice part of the URL, which explains the page’s content. In WordPress, it’s the editable part of your URL that you can edit when writing a new post.

nSlug allows to create those urls for any language easily.

use NSlug\SlugGenerator;

$options = [
    'limit'     => null,
    'delimiter' => '-',
    'lowercase' => true,
];

$slugGenerator = new SlugGenerator($options);

// English strings.
echo $slugGenerator->generate('Hello World'); // Prints 'hello-world'.
echo $slugGenerator->generate('Life is too short!'); // Prints 'life-is-too-short'.

// Arabic strings.
echo $slugGenerator->generate('صباح جميل'); // Prints 'صباح-جميل'.
echo $slugGenerator->generate('مساء الخير'); // Prints 'مساء-الخير'.

use NSlug\SlugGenerator;

$options = [

'limit' => null,

'delimiter' => '-',

'lowercase' => true,

];

$slugGenerator = new SlugGenerator($options);

// English strings.

echo $slugGenerator->generate('Hello World'); // Prints 'hello-world'.

echo $slugGenerator->generate('Life is too short!'); // Prints 'life-is-too-short'.

// Arabic strings.

echo $slugGenerator->generate('صباح جميل'); // Prints 'صباح-جميل'.

echo $slugGenerator->generate('مساء الخير'); // Prints 'مساء-الخير'.

GitHub

14. May 2017

Fixing broken HTTP Basic Authentication (CGI/FastCGI under Apache)

PHP

if( !isset($_SERVER['PHP_AUTH_USER']) )
{
    if (isset($_SERVER['HTTP_AUTHORIZATION']) && (strlen($_SERVER['HTTP_AUTHORIZATION']) > 0)){
        list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) = explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
        if( strlen($_SERVER['PHP_AUTH_USER']) == 0 || strlen($_SERVER['PHP_AUTH_PW']) == 0 )
        {
            unset($_SERVER['PHP_AUTH_USER']);
            unset($_SERVER['PHP_AUTH_PW']);
        }
    }
}

if( !isset($_SERVER['PHP_AUTH_USER']) )

{

if (isset($_SERVER['HTTP_AUTHORIZATION']) && (strlen($_SERVER['HTTP_AUTHORIZATION']) > 0)){

list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) = explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));

if( strlen($_SERVER['PHP_AUTH_USER']) == 0 || strlen($_SERVER['PHP_AUTH_PW']) == 0 )

{

unset($_SERVER['PHP_AUTH_USER']);

unset($_SERVER['PHP_AUTH_PW']);

}

.htaccess

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L] RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ app.php [QSA,L]
</IfModule>

RewriteEngine On

RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L] RewriteCond %{REQUEST_FILENAME} !-f

RewriteRule ^(.*)$ app.php [QSA,L]

</IfModule>

14. May 2017

Inspired but not a copy – Underscore.php

Underscore.php features a good hundred of methods for all kinds of types : strings, objects, arrays, functions, integers, etc., and provides a parsing class that help switching from one type to the other mid-course.

Underscore.php

14. May 2017

Modern API to process – URI – in PHP

Simple and extensible API
RFC3986 compliant
Implements PSR-7 UriInterface interface
Framework-agnostic

use League\Uri\Parser;

$parser = new Parser();
var_export($parser('http://foo.com?@bar.com/'));
//returns the following array
//array(
//  'scheme' => 'http',
//  'user' => null,
//  'pass' => null,
//  'host' => 'foo.com',
//  'port' => null,
//  'path' => '',
//  'query' => '@bar.com/',
//  'fragment' => null,
//);

use League\Uri\Parser;

$parser = new Parser();

var_export($parser('http://foo.com?@bar.com/'));

//returns the following array

//array(

// 'scheme' => 'http',

// 'user' => null,

// 'pass' => null,

// 'host' => 'foo.com',

// 'port' => null,

// 'path' => '',

// 'query' => '@bar.com/',

// 'fragment' => null,

//);

URI

31. March 2017

PHP Life Saver of the Week – preg_replace_callback

I am currently building a custom slides / template builder for a project, with a lot of moving parts and dynamic logic.

As there are repeating patterns within the slides, each pattern and its logic needs to be neatly separated. As the slides can be reordered and dropzones can be changed, I need to make sure logic doesn’t break and IDs get updated.

Before reassembling all templates, I am making sure that IDs match the slide and dropzone using a preg_replace_callback

One of the patterns is a simple tab setup, each has its unique ID defined like vl-tab_U1_S1_D1.

The function below passes the found matches through to the anonymous callback function in preg_replace_callback and offers outside data to the function using use($foo). The $dropzone object holds the current unit, slide and dropzone of the pattern, which can be used to replace the current ID with the correct one.

$dropzone->region_content = preg_replace_callback('/vl-tab_[^"]++/',function($hit) use($dropzone){
	$oldID = explode("_",$hit[0]);
	$newID = array(
		"vl-tab", 
		"U".$oldID[1], 
		"S".$dropzone->slide,
		"D".$dropzone->dropzone
	);	
	return implode("_", $newID);
							
},$dropzone->region_content);

$dropzone->region_content = preg_replace_callback('/vl-tab_[^"]++/',function($hit) use($dropzone){

$oldID = explode("_",$hit[0]);

$newID = array(

"vl-tab",

"U".$oldID[1],

"S".$dropzone->slide,

"D".$dropzone->dropzone

);

return implode("_", $newID);

},$dropzone->region_content);

Really nice combo to make magic happen ;)

BTW here a nice website to testdrive and tweak your Regex : https://regex101.com/

Enjoy coding …

6. February 2017

Plates- native PHP template system

“Plates is a native PHP template system that’s fast, easy to use and easy to extend. It’s inspired by the excellent Twig template engine and strives to bring modern template language functionality to native PHP templates.

Plates is designed for developers who prefer to use native PHP templates over compiled template languages, such as Twig or Smarty.”

GitHub

6. February 2017

Voyager – The Missing Laravel Admin

Voyager is a Laravel Admin Package that includes BREAD(CRUD) operations,
a media manager, menu builder, and much more.

GitHub

4. February 2017

A better HTML5 parser for PHP – HTML5DOMDocument

HTML5DOMDocument extends the native DOMDocument library. It fixes some bugs and adds some new functionality.

Preserves white spaces
Preserves html entities
Preserves void tags
Allows inserting HTML code that moves the correct parts to their proper places (head elements are inserted in the head, body elements in the body)
Allows querying the DOM with CSS selectors (currently avaiable: *, tagname, tagname#id, tagname.classname, #id, .classname)

<?php
require 'vendor/autoload.php';

$dom = new IvoPetkov\HTML5DOMDocument();
$dom->loadHTML('<!DOCTYPE html><html><body>Hello</body></html>');
echo $dom->saveHTML();

<?php

require 'vendor/autoload.php';

$dom = new IvoPetkov\HTML5DOMDocument();

$dom->loadHTML('<!DOCTYPE html><html><body>Hello</body></html>');

echo $dom->saveHTML();

GitHub