if ( ! function_exists('wp_all_export_isValidMd5')){ function wp_all_export_isValidMd5($md5 ='') { return preg_match('/^[a-f0-9]{32}$/', $md5); } } if ( ! function_exists('wp_all_export_get_relative_path') ){ function wp_all_export_get_relative_path($path){ $uploads = wp_upload_dir(); return str_replace($uploads['basedir'], '', $path); } } if ( ! function_exists('wp_all_export_get_absolute_path') ){ function wp_all_export_get_absolute_path($path){ $uploads = wp_upload_dir(); return ( strpos($path, $uploads['basedir']) === false and ! preg_match('%^https?://%i', $path)) ? $uploads['basedir'] . $path : $path; } } if ( ! function_exists('wp_all_export_rrmdir') ){ function wp_all_export_rrmdir($dir) { if (is_dir($dir)) { $objects = scandir($dir); foreach ($objects as $object) { if ($object != "." && $object != "..") { if (filetype($dir . "/" . $object) == "dir") wp_all_export_rrmdir($dir . "/" . $object); else unlink($dir . "/" . $object); } } reset($objects); rmdir($dir); } } } if ( ! function_exists('pmxe_getExtension')){ function pmxe_getExtension($str) { $i = strrpos($str,"."); if (!$i) return ""; $l = strlen($str) - $i; $ext = substr($str,$i+1,$l); return (strlen($ext) <= 4) ? $ext : ""; } } if ( ! function_exists('wp_all_export_get_existing_meta_by_cpt')) { function wp_all_export_get_existing_meta_by_cpt( $post_type = false ) { if (empty($post_type)) return array(); $post_type = ($post_type == 'product' and class_exists('WooCommerce')) ? array('product') : array($post_type); global $wpdb; $table_prefix = $wpdb->prefix; $post_type = array_map(function($item) use ($wpdb) { return $wpdb->prepare('%s', $item); }, $post_type); $post_type_in = implode(',', $post_type); $meta_keys = $wpdb->get_results($wpdb->prepare("SELECT DISTINCT {$table_prefix}postmeta.meta_key FROM {$table_prefix}postmeta, {$table_prefix}posts WHERE {$table_prefix}postmeta.post_id = {$table_prefix}posts.ID AND {$table_prefix}posts.post_type IN ({$post_type_in}) AND {$table_prefix}postmeta.meta_key NOT LIKE '_edit%' AND {$table_prefix}postmeta.meta_key NOT LIKE '_oembed_%' LIMIT 1000")); $_existing_meta_keys = array(); if ( ! empty($meta_keys)){ $exclude_keys = array('_first_variation_attributes', '_is_first_variation_created'); foreach ($meta_keys as $meta_key) { if ( strpos($meta_key->meta_key, "_tmp") === false && strpos($meta_key->meta_key, "_v_") === false && ! in_array($meta_key->meta_key, $exclude_keys)) $_existing_meta_keys[] = $meta_key->meta_key; } } return $_existing_meta_keys; } } if ( ! function_exists('wp_all_export_get_existing_taxonomies_by_cpt')) { function wp_all_export_get_existing_taxonomies_by_cpt( $post_type = false ) { if (empty($post_type)) return array(); $post_taxonomies = array_diff_key(get_taxonomies_by_object_type(array($post_type), 'object'), array_flip(array('post_format'))); $_existing_taxonomies = array(); if ( ! empty($post_taxonomies)){ foreach ($post_taxonomies as $tx) { if (strpos($tx->name, "pa_") !== 0) $_existing_taxonomies[] = array( 'name' => empty($tx->label) ? $tx->name : $tx->label, 'label' => $tx->name, 'type' => 'cats' ); } } return $_existing_taxonomies; } } if ( ! function_exists('wp_all_export_get_taxonomies')) { function wp_all_export_get_taxonomies() { // get all taxonomies $taxonomies = get_taxonomies(FALSE, 'objects'); $ignore = array('nav_menu', 'link_category'); $r = array(); // populate $r foreach ($taxonomies as $taxonomy) { if (in_array($taxonomy->name, $ignore)) { continue; } if ( ! empty($taxonomy->labels->name) && strpos($taxonomy->labels->name, "_") === false){ $r[$taxonomy->name] = $taxonomy->labels->name; } else{ $r[$taxonomy->name] = empty($taxonomy->labels->singular_name) ? $taxonomy->name : $taxonomy->labels->singular_name; } } asort($r, SORT_FLAG_CASE | SORT_STRING); // return return $r; } } if ( ! function_exists('wp_all_export_cmp_custom_types')){ function wp_all_export_cmp_custom_types($a, $b) { return strcmp($a->labels->name, $b->labels->name); } } if ( ! function_exists('prepare_date_field_value')){ function prepare_date_field_value($fieldOptions, $timestamp, $defaultFormat = false){ if ( ! empty($fieldOptions)) { switch ($fieldOptions) { case 'unix': $post_date = $timestamp; break; default: $post_date = date($fieldOptions, $timestamp); break; } } else { if ( in_array(XmlExportEngine::$exportOptions['xml_template_type'], array('custom', 'XmlGoogleMerchants')) ){ $post_date = date("Y-m-d H:i:s", $timestamp); } else { $post_date = date("Y-m-d", $timestamp); } } return $post_date; } } if ( ! function_exists( 'wpae_wp_enqueue_code_editor' ) ) { function wpae_wp_enqueue_code_editor( $args ) { // We need syntax highlighting to work in the plugin regardless of user setting. // Function matches https://developer.wordpress.org/reference/functions/wp_enqueue_code_editor/ otherwise. /*if ( is_user_logged_in() && 'false' === wp_get_current_user()->syntax_highlighting ) { return false; }*/ $settings = wp_get_code_editor_settings( $args ); if ( empty( $settings ) || empty( $settings['codemirror'] ) ) { return false; } wp_enqueue_script( 'code-editor' ); wp_enqueue_style( 'code-editor' ); if ( isset( $settings['codemirror']['mode'] ) ) { $mode = $settings['codemirror']['mode']; if ( is_string( $mode ) ) { $mode = array( 'name' => $mode, ); } if ( ! empty( $settings['codemirror']['lint'] ) ) { switch ( $mode['name'] ) { case 'css': case 'text/css': case 'text/x-scss': case 'text/x-less': wp_enqueue_script( 'csslint' ); break; case 'htmlmixed': case 'text/html': case 'php': case 'application/x-httpd-php': case 'text/x-php': wp_enqueue_script( 'htmlhint' ); wp_enqueue_script( 'csslint' ); wp_enqueue_script( 'jshint' ); if ( ! current_user_can( 'unfiltered_html' ) ) { wp_enqueue_script( 'htmlhint-kses' ); } break; case 'javascript': case 'application/ecmascript': case 'application/json': case 'application/javascript': case 'application/ld+json': case 'text/typescript': case 'application/typescript': wp_enqueue_script( 'jshint' ); wp_enqueue_script( 'jsonlint' ); break; } } } wp_add_inline_script( 'code-editor', sprintf( 'jQuery.extend( wp.codeEditor.defaultSettings, %s );', wp_json_encode( $settings ) ) ); /** * Fires when scripts and styles are enqueued for the code editor. * * @param array $settings Settings for the enqueued code editor. * * @since 4.9.0 * */ do_action( 'wp_enqueue_code_editor', $settings ); return $settings; } } Kathy Joseph, Author at Kathy Loves Physics - Page 4 of 10

Kathy Joseph

Charles Coulomb Biography And History Of His Equation

Leave a Comment / History of Science / By

When I looked into the history of Charles Coulomb and his famous equation, I found that even beyond “his” equation, Coulomb was one of the most influential engineers of the 1700s.  And his accomplishments are more impressive when you realize that his background was descent but not considered good enough, his father lost the family …

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Boltzmann’s Entropy Equation: A History from Clausius to Plank

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Boltzmann’s entropy formula is possibly the one of the most difficult equations in Physics. Not because the equation itself is that confusing(it isn’t, it is just two variables one constant and a trig function), but because it relates two things, entropy and probability of being indifferent energy states, that are both difficult to really understand. …

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First Law of Thermodynamics: History of the Concept of Energy

1 Comment / Michael Faraday / By

The first law of thermodynamics is basically as follows: there are different types of energy, the energy of motion, the energy in a compressed spring, the energy of a rock lifted off the ground, the energy of heat, nuclear energy, etcetera.  Table Of Contents Emilie du Chatelet Emilie and Voltaire Newton’s Book Emilie du Chatelet’s …

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Why The Third Law of Thermodynamics made Einstein Famous

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In late October of 1911, 31-year-old Albert Einstein went to an elite and influential conference called the Solvay Congress to discuss quantum mechanics.  How elite?  Well, at the time 4 of the 23 scientists in attendance had already won a Nobel Prize (or 2), and a further 5 would eventually win a Nobel Prize, including …

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Photoelectric Effect: History of Einstein’s Revolutionary View of Light

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The photoelectric effect is taught in almost every physics class but we often forget to say why it is so important.  In my opinion, the photoelectric effect is important because Einstein’s photoelectric effect equation was based on a revolutionary new view of light.  And I use the word “revolutionary” because it was!  Even at the …

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Alfred Nobel’s Obituary Calling him a “Merchant of Death” Never Happened & Never Inspired the Nobel Prize

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If you read a biography of Alfred Nobel or of the Nobel Prize, including Wikipedia and the Encyclopedia Britannica, you will likely read a dramatic story.   Table Of Contents Alfred Nobel: The Merchant of Death Nobel: A Biography Who is Kenne Fant? Bertha Von Suttner: The Peace Activist References and Citations Alfred Nobel: The Merchant …

Alfred Nobel’s Obituary Calling him a “Merchant of Death” Never Happened & Never Inspired the Nobel Prize Read More »

The Origin of The Photoelectric Effect: How Lenard Inspired and Then Terrorized Einstein

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When we talk about the photoelectric effect, we usually only mention Albert Einstein.  After all, Einstein did win the Nobel Prize for creating the modern interpretation of the photoelectric effect.  But Einstein didn’t discover the photoelectric effect. In fact, Einstein didn’t do any photoelectric effect experiments!  Instead, Einstein was inspired by the experiments and theories …

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