KnightAlex

add_shortcode('isbn-13to10', 'ISBN13toISBN10_shortcode');
// Converts ISBN-13 to ISBN-10
// Leaves ISBN-10 numbers (or anything else not matching 13 consecutive numbers) alone
function ISBN13toISBN10_shortcode($atts) {
	extract( shortcode_atts( array(
	'isbn' => ''
	), $atts ) );
    if (preg_match('/^\d{3}(\d{9})\d$/', $isbn, $m)) {
        $sequence = $m[1];
        $sum = 0;

KnightAlex

//convert string to a slug
function get_slug_from_string($atts, $content = '')
{
    extract(shortcode_atts(array(
        'text' => ''
    ), $atts));
    $slug = strtolower($text);
    $slug = str_replace(' ', '-', $slug);

    // replace special chars

KnightAlex

//unset Storefront templates
function theme_name_disable_page_template($post_templates, $theme, $post, $post_type)
{
    unset($post_templates['template-fullwidth.php']);
    unset($post_templates['template-homepage.php']);

    return $post_templates;
}
add_filter('theme_templates', 'theme_name_disable_page_template', 10, 4);

KnightAlex

<?php 
$arr = array( new stdClass(), new stdClass() ); 
$arr[0]->colour = 'red'; 
$arr[1]->colour = 'green'; 
$arr[1]->state  = 'enabled'; 

if (in_array_field('red', 'colour', $arr)) 
   echo 'Item exists with colour red.'; 
if (in_array_field('magenta', 'colour', $arr)) 

KnightAlex

//blockquote source shortcode
function bs_quote_source_shortcode($atts, $content, $tag){
	$output = '<span class="source">' . $content . '</span>';
	return $output;
}
add_shortcode('source','bs_quote_source_shortcode');

KnightAlex

//remove some widget areas
function lt_remove_some_widget_areas(){
 
    // Unregister some of the TwentyTen sidebars
    unregister_sidebar( 'footer-1' );
    unregister_sidebar( 'footer-2' );
    unregister_sidebar( 'footer-3' );
    unregister_sidebar( 'footer-4' );
}
add_action( 'widgets_init', 'lt_remove_some_widget_areas', 11 );

KnightAlex

ul {
	list-style: none;
	li::before {
	  content: "\2022";  /* Add content: \2022 is the CSS Code/unicode for a bullet */
	  color: red; /* Change the color */
	  font-weight: bold; /* If you want it to be bold */
	  display: inline-block; /* Needed to add space between the bullet and the text */ 
	  width: 20px; /* Also needed for space (tweak if needed) */
	  margin-left: -2px; /* Also needed for space (tweak if needed) */
	}

KnightAlex

add_action( 'pmxi_saved_post', 'post_saved', 10, 1 );
function post_saved( $id ) {
    $comma_values = get_post_meta($id, 'my_custom_field', true); 
    $explode_comma_values = explode( ',', $comma_values );
    delete_post_meta( $id, 'my_custom_field', $comma_values ); //Clear custom field first
    foreach($explode_comma_values as $v){
        add_post_meta( $id, 'my_custom_field', $v );
    }
}

KnightAlex

@media (max-width: 600px) {
	html #wpadminbar{top:-46px} /* wp admin bar fix, due to slide-push menu putting a relative position on the body element */
}

KnightAlex

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console