diff --git src/wp-admin/install.php src/wp-admin/install.php
index 088b88ef14..d5669871ab 100644
--- src/wp-admin/install.php
+++ src/wp-admin/install.php
@@ -386,7 +386,7 @@ switch ( $step ) {
 			$error = true;
 		}
 
-		if ( $error === false ) {
+		if ( false === $error ) {
 			$wpdb->show_errors();
 			$result = wp_install( $weblog_title, $user_name, $admin_email, $public, '', wp_slash( $admin_password ), $loaded_language );
 			?>
diff --git src/wp-admin/media-upload.php src/wp-admin/media-upload.php
index f009bc162a..7035f28b88 100644
--- src/wp-admin/media-upload.php
+++ src/wp-admin/media-upload.php
@@ -33,7 +33,7 @@ $ID      = isset( $ID ) ? (int) $ID : 0;
 $post_id = isset( $post_id ) ? (int) $post_id : 0;
 
 // Require an ID for the edit screen.
-if ( isset( $action ) && $action == 'edit' && ! $ID ) {
+if ( isset( $action ) && 'edit' == $action && ! $ID ) {
 	wp_die(
 		'<h1>' . __( 'Something went wrong.' ) . '</h1>' .
 		'<p>' . __( 'Invalid item ID.' ) . '</p>',
@@ -81,7 +81,7 @@ if ( isset( $_GET['tab'] ) ) {
 $body_id = 'media-upload';
 
 // Let the action code decide how to handle the request.
-if ( $tab == 'type' || $tab == 'type_url' || ! array_key_exists( $tab, media_upload_tabs() ) ) {
+if ( 'type' == $tab || 'type_url' == $tab || ! array_key_exists( $tab, media_upload_tabs() ) ) {
 	/**
 	 * Fires inside specific upload-type views in the legacy (pre-3.5.0)
 	 * media popup based on the current tab.
diff --git src/wp-admin/media.php src/wp-admin/media.php
index 5f0752d1ac..83b35e9448 100644
--- src/wp-admin/media.php
+++ src/wp-admin/media.php
@@ -69,7 +69,7 @@ switch ( $action ) {
 		if ( 'attachment' !== $att->post_type ) {
 			wp_die( __( 'You attempted to edit an item that isn&#8217;t an attachment. Please go back and try again.' ) );
 		}
-		if ( $att->post_status == 'trash' ) {
+		if ( 'trash' == $att->post_status ) {
 			wp_die( __( 'You can&#8217;t edit this attachment because it is in the Trash. Please move it out of the Trash and try again.' ) );
 		}
 
diff --git src/wp-admin/ms-delete-site.php src/wp-admin/ms-delete-site.php
index 3332f50e29..28868384c2 100644
--- src/wp-admin/ms-delete-site.php
+++ src/wp-admin/ms-delete-site.php
@@ -17,7 +17,7 @@ if ( ! current_user_can( 'delete_site' ) ) {
 	wp_die( __( 'Sorry, you are not allowed to delete this site.' ) );
 }
 
-if ( isset( $_GET['h'] ) && $_GET['h'] != '' && get_option( 'delete_blog_hash' ) != false ) {
+if ( isset( $_GET['h'] ) && '' != $_GET['h'] && false != get_option( 'delete_blog_hash' ) ) {
 	if ( hash_equals( get_option( 'delete_blog_hash' ), $_GET['h'] ) ) {
 		wpmu_delete_blog( get_current_blog_id() );
 		wp_die(
@@ -42,7 +42,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 echo '<div class="wrap">';
 echo '<h1>' . esc_html( $title ) . '</h1>';
 
-if ( isset( $_POST['action'] ) && $_POST['action'] == 'deleteblog' && isset( $_POST['confirmdelete'] ) && $_POST['confirmdelete'] == '1' ) {
+if ( isset( $_POST['action'] ) && 'deleteblog' == $_POST['action'] && isset( $_POST['confirmdelete'] ) && '1' == $_POST['confirmdelete'] ) {
 	check_admin_referer( 'delete-blog' );
 
 	$hash = wp_generate_password( 20, false );
diff --git src/wp-admin/options.php src/wp-admin/options.php
index 0672e944d4..5b3efc5fc2 100644
--- src/wp-admin/options.php
+++ src/wp-admin/options.php
@@ -335,7 +335,7 @@ $options = $wpdb->get_results( "SELECT * FROM $wpdb->options ORDER BY option_nam
 
 foreach ( (array) $options as $option ) :
 	$disabled = false;
-	if ( $option->option_name == '' ) {
+	if ( '' == $option->option_name ) {
 		continue;
 	}
 	if ( is_serialized( $option->option_value ) ) {
diff --git src/wp-admin/post.php src/wp-admin/post.php
index d32e52b9b9..9c0da36be9 100644
--- src/wp-admin/post.php
+++ src/wp-admin/post.php
@@ -55,8 +55,8 @@ if ( isset( $_POST['deletepost'] ) ) {
 
 $sendback = wp_get_referer();
 if ( ! $sendback ||
-	strpos( $sendback, 'post.php' ) !== false ||
-	strpos( $sendback, 'post-new.php' ) !== false ) {
+	false !== strpos( $sendback, 'post.php' ) ||
+	false !== strpos( $sendback, 'post-new.php' ) ) {
 	if ( 'attachment' == $post_type ) {
 		$sendback = admin_url( 'upload.php' );
 	} else {
@@ -160,7 +160,7 @@ switch ( $action ) {
 			$submenu_file  = 'upload.php';
 			$post_new_file = 'media-new.php';
 		} else {
-			if ( isset( $post_type_object ) && $post_type_object->show_in_menu && $post_type_object->show_in_menu !== true ) {
+			if ( isset( $post_type_object ) && $post_type_object->show_in_menu && true !== $post_type_object->show_in_menu ) {
 				$parent_file = $post_type_object->show_in_menu;
 			} else {
 				$parent_file = "edit.php?post_type=$post_type";
@@ -179,7 +179,7 @@ switch ( $action ) {
 		 * @param bool    $replace Whether to replace the editor. Default false.
 		 * @param WP_Post $post    Post object.
 		 */
-		if ( apply_filters( 'replace_editor', false, $post ) === true ) {
+		if ( true === apply_filters( 'replace_editor', false, $post ) ) {
 			break;
 		}
 
diff --git src/wp-admin/update-core.php src/wp-admin/update-core.php
index 394aebadbf..d8f47bab20 100644
--- src/wp-admin/update-core.php
+++ src/wp-admin/update-core.php
@@ -163,12 +163,12 @@ function list_core_update( $update ) {
 	echo '</p>';
 	if ( 'en_US' != $update->locale && ( ! isset( $wp_local_package ) || $wp_local_package != $update->locale ) ) {
 		echo '<p class="hint">' . __( 'This localized version contains both the translation and various other localization fixes.' ) . '</p>';
-	} elseif ( 'en_US' == $update->locale && get_locale() != 'en_US' && ( ! $update->packages->partial && $wp_version == $update->partial_version ) ) {
+	} elseif ( 'en_US' == $update->locale && 'en_US' != get_locale() && ( ! $update->packages->partial && $wp_version == $update->partial_version ) ) {
 		// Partial builds don't need language-specific warnings.
 		echo '<p class="hint">' . sprintf(
 			/* translators: %s: WordPress version. */
 			__( 'You are about to install WordPress %s <strong>in English (US).</strong> There is a chance this update will break your translation. You may prefer to wait for the localized version to be released.' ),
-			$update->response != 'development' ? $update->current : ''
+			'development' != $update->response ? $update->current : ''
 		) . '</p>';
 	}
 	echo '</form>';
@@ -256,7 +256,7 @@ function core_upgrade_preamble() {
 		echo '</h2>';
 	}
 
-	if ( isset( $updates[0] ) && $updates[0]->response == 'development' ) {
+	if ( isset( $updates[0] ) && 'development' == $updates[0]->response ) {
 		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
 		$upgrader = new WP_Automatic_Updater;
 		if ( wp_http_supports( 'ssl' ) && $upgrader->should_update( 'core', $updates[0], ABSPATH ) ) {
@@ -274,7 +274,7 @@ function core_upgrade_preamble() {
 	}
 	echo '</ul>';
 	// Don't show the maintenance mode notice when we are only showing a single re-install option.
-	if ( $updates && ( count( $updates ) > 1 || $updates[0]->response != 'latest' ) ) {
+	if ( $updates && ( count( $updates ) > 1 || 'latest' != $updates[0]->response ) ) {
 		echo '<p>' . __( 'While your site is being updated, it will be in maintenance mode. As soon as your updates are complete, your site will return to normal.' ) . '</p>';
 	} elseif ( ! $updates ) {
 		list( $normalized_version ) = explode( '-', $wp_version );
@@ -692,7 +692,7 @@ $action = isset( $_GET['action'] ) ? $_GET['action'] : 'upgrade-core';
 $upgrade_error = false;
 if ( ( 'do-theme-upgrade' == $action || ( 'do-plugin-upgrade' == $action && ! isset( $_GET['plugins'] ) ) )
 	&& ! isset( $_POST['checked'] ) ) {
-	$upgrade_error = $action == 'do-theme-upgrade' ? 'themes' : 'plugins';
+	$upgrade_error = 'do-theme-upgrade' == $action ? 'themes' : 'plugins';
 	$action        = 'upgrade-core';
 }
 
@@ -743,7 +743,7 @@ if ( 'upgrade-core' == $action ) {
 	<?php
 	if ( $upgrade_error ) {
 		echo '<div class="error"><p>';
-		if ( $upgrade_error == 'themes' ) {
+		if ( 'themes' == $upgrade_error ) {
 			_e( 'Please select one or more themes to update.' );
 		} else {
 			_e( 'Please select one or more plugins to update.' );
diff --git src/wp-admin/user-new.php src/wp-admin/user-new.php
index dff49fecf0..be4b5083bc 100644
--- src/wp-admin/user-new.php
+++ src/wp-admin/user-new.php
@@ -63,7 +63,7 @@ if ( isset( $_REQUEST['action'] ) && 'adduser' == $_REQUEST['action'] ) {
 	$redirect       = 'user-new.php';
 	$username       = $user_details->user_login;
 	$user_id        = $user_details->ID;
-	if ( $username != null && array_key_exists( $blog_id, get_blogs_of_user( $user_id ) ) ) {
+	if ( null != $username && array_key_exists( $blog_id, get_blogs_of_user( $user_id ) ) ) {
 		$redirect = add_query_arg( array( 'update' => 'addexisting' ), 'user-new.php' );
 	} else {
 		if ( isset( $_POST['noconfirmation'] ) && current_user_can( 'manage_network_users' ) ) {