lukecav

https://gtmetrix.com/
https://gtmetrix.com/blog/how-to-read-a-waterfall-chart-for-beginners/
https://www.webpagetest.org/

https://wordpress.org/plugins/query-monitor/
https://github.com/crstauf/query-monitor-extend

https://newrelic.com/products/application-monitoring
https://help.nexcess.net/74095-wordpress/configure-new-relic-monitoring
https://wordpress.org/plugins/wp-newrelic/

tdmrhn

<script>
jQuery(document).ready(function($) {
  $('.ct-filter').on( 'click', function(event){	
  var $type = $(this).data("filter");
  if($type == "all"){
    $('.type-product').fadeOut(0);
    $('.type-product').fadeIn(500);
  } else {
    $('.type-product').hide();
    // For CPTs just change the category class to your CPTs slug for example: '.projects-'

tdmrhn

<script>
jQuery(document).ready(function($) {
  $('.ct-filter').on( 'click', function(event){	
  var $type = $(this).data("filter");
  if($type == "all"){
    $('.entry-card').fadeOut(0);
    $('.entry-card').fadeIn(500);
  } else {
    $('.entry-card').hide();
    // For CPTs just change the category class to your CPTs slug for example: '.projects-'

Shelob9

<?php
    function slug_order_archive_by_field( $query ) {
        //Only do if is main query fo a specific cpt's archive.
        //@TODO set cpt's name
        if ( $query->is_main_query() &&  is_post_type_archive( 'CPT_NAME' ) ) {
            //@TODO Set the name of the field we are ordering by
            $query->set( 'meta_key', 'FIELD_NAME' );
            //@TODO change order to DESC IF you want to go in reverse order
            $query->set( 'order', 'ASC' );
            //@TODO uncomment next line IF you want to sort by an integer instead of alphabetically

ebinnion

<?php
/*
* Readme: To use, place this snippet in your functions.php.
*/
add_filter('wp_link_pages', 'bootstrap_wp_link_pages');
function bootstrap_wp_link_pages($wp_links){
	global $post;

	// Generate current page base url without pagination.
	$post_base = trailingslashit( get_site_url(null, $post->post_name) );

justintadlock

<?php

# Register custom post types on the 'init' hook.
add_action( 'init', 'my_register_post_types' );

/**
 * Registers post types needed by the plugin.
 *
 * @since  1.0.0
 * @access public

PaulKinlan

(function() { 
  var CSSCriticalPath = function(w, d, opts) {
    var opt = opts || {};
    var css = {};
    var pushCSS = function(r) {
      if(!!css[r.selectorText] === false) css[r.selectorText] = {};
      var styles = r.style.cssText.split(/;(?![A-Za-z0-9])/);
      for(var i = 0; i < styles.length; i++) {
        if(!!styles[i] === false) continue;
        var pair = styles[i].split(": ");

chriscoyier

@media only screen and (min-width: 320px) {

  /* Small screen, non-retina */

}

@media
only screen and (-webkit-min-device-pixel-ratio: 2)      and (min-width: 320px),
only screen and (   min--moz-device-pixel-ratio: 2)      and (min-width: 320px),
only screen and (     -o-min-device-pixel-ratio: 2/1)    and (min-width: 320px),

clarklab

<?

if( 'POST' == $_SERVER['REQUEST_METHOD'] && !empty( $_POST['insert_post'] )) { //check that our form was submitted

$title =  $_POST['thread_title'];  //set our title
	
if ($_POST['thread_description']=="") {  // check if a description was entered
		$description = "See thread title...";  // if not, use placeholder
	} else {
		$description = $_POST['thread_description']; //if so, use it

bicho44

<?php
add_image_size('thumbnail-bw', 400, 0, false);
add_filter('wp_generate_attachment_metadata','bw_images_filter');

function bw_images_filter($meta) {
	$file = wp_upload_dir();
	$file = trailingslashit($file['path']).$meta['sizes']['thumbnail-bw']['file'];
	list($orig_w, $orig_h, $orig_type) = @getimagesize($file);
	$image = wp_load_image($file);
	imagefilter($image, IMG_FILTER_GRAYSCALE);