Ciantic

<?php 
// Mind you, this does not make SVG files safe. This script is meant for sites where only trusted people can upload.

add_action("init", function() {
    // First line of defence defused
    add_filter('upload_mimes', function ($mimes) {
        $mimes['svg'] = 'image/svg+xml';
        return $mimes;
    });

swoboda

<?php
// Do NOT include the opening php tag

add_filter( 'gform_field_choice_markup_pre_render', function ( $choice_markup, $choice, $field ) {
	if ( $field->get_input_type() == 'select' ) {
		$choice_value = rgar( $choice, 'value' );
		if ( $choice_value === 'optgroup-start' ) {
			return sprintf( '<optgroup label="%s">', esc_html( $choice['text'] ) );
		} elseif ( $choice_value === 'optgroup-end' ) {
			return '</optgroup>';

stianandreassen

<?php
/**
 * Add height field to ACF WYSIWYG
 */
function wysiwyg_render_field_settings( $field ) {
	acf_render_field_setting( $field, array(
		'label'			=> __('Height of Editor'),
		'instructions'	=> __('Height of Editor after Init'),
		'name'			=> 'wysiwyg_height',
		'type'			=> 'number',

khromov

<?php
/*
Plugin Name: Advanced Custom Fields: Nowhere location rules
Description: Adds a "Nowhere" location rule in ACF
*/

add_filter('acf/location/rule_types', function($rules) {

  $rules['Extra']['nowhere'] = 'Nowhere';

timwhitlock

<?php
/**
 * Plugin Name: Disable REST API
 * Version: 0
 */

// completely disable wp-json access
add_filter( 'rest_authentication_errors', function( $access ){
    return new WP_Error( 'rest_cannot_access', 'Bye', array( 'status' => 403 ) );
} );

BODA82

<?php
// ACF upload prefilter
function gist_acf_upload_dir_prefilter($errors, $file, $field) {
    
    // Only allow editors and admins, change capability as you see fit
    if( !current_user_can('edit_pages') ) {
        $errors[] = 'Only Editors and Administrators may upload attachments';
    }
    
    // This filter changes directory just for item being uploaded

DevinWalker

/**
 * Remove Rev Slider Metabox
 */
if ( is_admin() ) {

	function remove_revolution_slider_meta_boxes() {
		remove_meta_box( 'mymetabox_revslider_0', 'page', 'normal' );
		remove_meta_box( 'mymetabox_revslider_0', 'post', 'normal' );
		remove_meta_box( 'mymetabox_revslider_0', 'YOUR_CUSTOM_POST_TYPE', 'normal' );
	}

spivurno

<?php

# Basic Usage: 
# Applies default markup to all forms
gw_multi_file_merge_tag()->register_settings();

# Exclude Form(s): 
# Applies default markup to all forms excluding the specified forms
gw_multi_file_merge_tag()->register_settings( array(
    'exclude_forms' => 2 // multiple forms: array( 2, 4 )

BFTrick

<?php
/**
 * Change text strings
 *
 * @link http://codex.wordpress.org/Plugin_API/Filter_Reference/gettext
 */
function my_text_strings( $translated_text, $text, $domain ) {
	switch ( $translated_text ) {
		case 'Sale!' :
			$translated_text = __( 'Clearance!', 'woocommerce' );

billerickson

<?php

$args = array(

	// Normal query goes here //

	'no_found_rows' => true, // counts posts, remove if pagination required
	'update_post_term_cache' => false, // grabs terms, remove if terms required (category, tag...)
	'update_post_meta_cache' => false, // grabs post meta, remove if post meta required
);