wpscholar

<?php

/**
 * Removed width and height attributes from image elements in WordPress
 */
add_filter( 'post_thumbnail_html', 'remove_width_attribute', 10 );
add_filter( 'image_send_to_editor', 'remove_width_attribute', 10 );

function remove_width_attribute( $html ) {
   $html = preg_replace( '/(width|height)="\d*"\s/', "", $html );

wpscholar

<?php
/**
 * Function to set the featured image for a given post in WordPress
 *
 * @author Micah Wood <micah@wpscholar.com>
 * @param int $post_id The ID of the post for which we are setting the featured image
 * @param int $attachment_id The ID of the attachment we want to use as the featured image
 */
function set_featured_image( $post_id, $attachment_id ){
     update_post_meta( $post_id, '_thumbnail_id', $attachment_id );

wpscholar

<?php
/**
 * Customize the login form in WordPress
 * @author Micah Wood <micah@wpscholar.com>
 */

/**
 * Change the href for the logo link on login page to point to the main site
 */
add_filter( 'login_headerurl', 'change_login_headerurl' );

wpscholar

<?php
/**
 * Returns the greatest common divisor of two integers using the Euclidean algorithm.
 *
 * @param $a
 * @param $b
 *
 * @return int
 */
function get_greatest_common_divisor( $a, $b ) {

wpscholar

( function( $ ) {

    $.fn.listExpansion = function( options ) {

  	var settings = {
			expandLinkHTML		: '+',	// Set the HTML to display inside the 'Expand' link
			collapseLinkHTML	: '-'	// Set the HTML to display inside the 'Collapse' link
		};

        return this.each( function() {

wpscholar

/**
 * Using this snippet of code, just add the 'mobile-no-keyboard' class to your input or textarea
 * to prevent the keyboard display on most mobile devices.  You can just add the 'readonly' attribute,
 * but there may be reasons you don't want to on a desktop/laptop machine.
 */
jQuery(document).ready(function($) {
  if( /Android|webOS|iPhone|iPad|iPod|BlackBerry/i.test(navigator.userAgent) ) {
		$('input.mobile-no-keyboard, textarea.mobile-no-keyboard').attr( 'readonly', 'readonly' );
	}
});

wpscholar

<?php

class singleton() {
  
  private static $instance;
  
  public static get_instance() {
    return isset( self::$instance ) ? self::$instance : new self();
  }

wpscholar

<?php

/**
 * Pre WordPress 3.5, this is how we had to fetch post meta
 */
$post = get_post();
$last_name = get_post_meta( $post->ID, '_last_name', true );

/**
 * As of WordPress 3.5, the new WP_Post object allows us to fetch post meta this way

wpscholar

/**
 * Prevent all links with # as the href from doing anything
 */
jQuery(document).ready(function($) {
    $('a[href="#"]').click(function(e) {
        e.preventDefault();
    });
});

wpscholar

/** 
 * Open all external links in a new window
 */
jQuery(document).ready(function($) {
	$('a')
		.filter('[href^="http"], [href^="//"]')
		.not('[href*="' + window.location.host + '"]')
		.attr('rel', 'noopener noreferrer')
		.attr('target', '_blank');
});