diff --git a/www/include/header.php b/www/include/header.php
index 63fe3c6..046c542 100644
--- a/www/include/header.php
+++ b/www/include/header.php
@@ -2,12 +2,12 @@
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja">
   <head>
     <meta content="text/html; charset=utf-8" http-equiv="content-type" />
-    <title><?php echo STORE_NAME; ?></title>
+    <title><?= STORE_NAME; ?></title>
     <?php
       if (!empty($styles)) {
         foreach ($styles as $s) {
     ?>
-      <link rel="stylesheet" type="text/css" href="/static/<?php echo $s; ?>.css" />
+      <link rel="stylesheet" type="text/css" href="/static/<?= $s; ?>.css" />
     <?php
         }
       }
@@ -15,28 +15,28 @@
   </head>
   <body>
     <div class="jswarning" id="jswarning">
-      <?php echo $eigo ?
+      <?= $eigo ?
         'Warning: JavaScript is ON. For safety and security reasons, please turn JavaScript OFF.' : '注意：JavsScriptはONです。安全・安心の為、JavaScriptをOFFにしてお願い致します。'; ?>
     </div>
     <script type="text/javascript">
       document.getElementById('jswarning').style.display = 'block';
     </script>
-    <h1><?php echo STORE_NAME; ?></h1>
+    <h1><?= STORE_NAME; ?></h1>
     <div class="container">
       <form method="post" action="/">
-        <input class="langchange" type="submit" name="langchange" value="<?php echo $eigo ? '日本語に戻る' : 'Switch to English'; ?>" />
+        <input class="langchange" type="submit" name="langchange" value="<?= $eigo ? '日本語に戻る' : 'Switch to English'; ?>" />
       </form>
-      <h2><?php echo $pagetitle; ?></h2>
+      <h2><?= $pagetitle; ?></h2>
 
       <?php $countcart = count(array_filter(explode(',', getcookie('cart')))); ?>
       <div class="nav">
         <ul>
-          <li><a href="/"><?php echo $eigo ? 'Home' : 'トップページ'; ?></a></li>
+          <li><a href="/"><?= $eigo ? 'Home' : 'トップページ'; ?></a></li>
           <li>
             <a href="/cart.php">
-              <?php echo $eigo ? 'Cart' : 'カート'; ?>
+              <?= $eigo ? 'Cart' : 'カート'; ?>
             </a>
-            <?php if ($countcart > 0) { ?><div class="cart-count"><?php echo $countcart < 99 ? $countcart : '99'; ?></div> <?php } ?>
+            <?php if ($countcart > 0) { ?><div class="cart-count"><?= $countcart < 99 ? $countcart : '99'; ?></div> <?php } ?>
           </li>
         </ul>
       </div>
diff --git a/www/index.php b/www/index.php
index d2f9e66..847a018 100644
--- a/www/index.php
+++ b/www/index.php
@@ -34,10 +34,10 @@
 ?>
         <div class="item-card">
           <?php $fname = null !== $b['filename'] ? $b['filename'] : 'nowprinting.png'; ?>
-          <a href="/item.php?slug=<?php echo $b['slug']; ?>"><img src="/img/<?php echo $fname; ?>" alt="<?php echo $fname; ?>" style="width: 200px;" /></a>
-          <h3><a href="/item.php?slug=<?php echo $b['slug']; ?>"><?php echo mb_strlen($b['name']) > 9 ? mb_substr($b['name'], 0, 9).'…' : $b['name']; ?></a></h3>
-          <p class="author"><?php echo $b['author']; ?></p>
-          <p class="price">XMR <?php echo $b['price']; ?> / <?php echo $eigo ? 'Quantity' : '商品数'; ?>：<?php echo $b['quantity']; ?></p>
+          <a href="/item.php?slug=<?= $b['slug']; ?>"><img src="/img/<?= $fname; ?>" alt="<?= $fname; ?>" style="width: 200px;" /></a>
+          <h3><a href="/item.php?slug=<?= $b['slug']; ?>"><?= mb_strlen($b['name']) > 9 ? mb_substr($b['name'], 0, 9).'…' : $b['name']; ?></a></h3>
+          <p class="author"><?= $b['author']; ?></p>
+          <p class="price">XMR <?= $b['price']; ?> / <?= $eigo ? 'Quantity' : '商品数'; ?>：<?= $b['quantity']; ?></p>
         </div>
 <?php
   }
diff --git a/www/item.php b/www/item.php
index 6ef15cd..b53fde8 100644
--- a/www/item.php
+++ b/www/item.php
@@ -29,21 +29,21 @@
 
 <div class="item-container">
   <?php $fname = null !== $filename ? $filename : 'nowprinting.png'; ?>
-  <div class="item-photo"><img src="/img/<?php echo $fname; ?>" alt="<?php echo $fname; ?>" /></div>
+  <div class="item-photo"><img src="/img/<?= $fname; ?>" alt="<?= $fname; ?>" /></div>
   <div class="item-main">
     <div class="item-header-container">
-      <div class="item-header-title"><?php echo $name; ?></div>
-      <div class="item-header-price"><img src="/static/monero.png" alt="XMR" /> <?php echo $price; ?></div>
+      <div class="item-header-title"><?= $name; ?></div>
+      <div class="item-header-price"><img src="/static/monero.png" alt="XMR" /> <?= $price; ?></div>
     </div>
-    <div class="item-author"><?php echo $author; ?></div>
-    <div class="item-language"><?php echo $booklang; ?></div>
+    <div class="item-author"><?= $author; ?></div>
+    <div class="item-language"><?= $booklang; ?></div>
 
-    <p><?php echo $description; ?></p>
+    <p><?= $description; ?></p>
 
-    <p><?php echo $pagecount.($eigo ? ' pages' : 'ページ'); ?></p>
+    <p><?= $pagecount.($eigo ? ' pages' : 'ページ'); ?></p>
     <form method="post" action="/cart.php">
-      <input type="hidden" name="item" value="<?php echo $slug; ?>" />
-      <input type="submit" name="addtocart" value="<?php echo $eigo ? 'Add to cart' : 'カートに追加'; ?>" />
+      <input type="hidden" name="item" value="<?= $slug; ?>" />
+      <input type="submit" name="addtocart" value="<?= $eigo ? 'Add to cart' : 'カートに追加'; ?>" />
     </form>
   </div>
 </div>
diff --git a/www/shipping.php b/www/shipping.php
index 36272c0..461e6cb 100644
--- a/www/shipping.php
+++ b/www/shipping.php
@@ -82,7 +82,7 @@
 
   if ($err != '') {
 ?>
-          <div class="error"><?php echo $err; ?></div>
+          <div class="error"><?= $err; ?></div>
 <?php
   }
   require_once('include/header.php');
diff --git a/www/shipping/1.php b/www/shipping/1.php
index 38804d4..3389b47 100644
--- a/www/shipping/1.php
+++ b/www/shipping/1.php
@@ -1,36 +1,36 @@
           <form method="post" action="/shipping.php">
             <table class="address-form" border="0">
               <tr>
-                <td class="required"><?php echo $eigo ? 'Name (nickname OK)' : 'お名前（異名OK）'; ?></td>
-                <td><input type="text" name="name" placeholder="<?php echo $eigo ? 'Anonymous' : 'アノニマス'; ?>" value="<?php echo $tmpstore['name'] ?>" /></td>
+                <td class="required"><?= $eigo ? 'Name (nickname OK)' : 'お名前（異名OK）'; ?></td>
+                <td><input type="text" name="name" placeholder="<?= $eigo ? 'Anonymous' : 'アノニマス'; ?>" value="<?= $tmpstore['name'] ?>" /></td>
               </tr>
               <tr>
-                <td class="required"><?php echo $eigo ? 'ZIP Code' : '郵便番号'; ?></td>
-                <td><input type="text" name="zip" placeholder="100-0001" value="<?php echo $tmpstore['zip'] ?>" /></td>
+                <td class="required"><?= $eigo ? 'ZIP Code' : '郵便番号'; ?></td>
+                <td><input type="text" name="zip" placeholder="100-0001" value="<?= $tmpstore['zip'] ?>" /></td>
               </tr>
               <tr>
-                <td class="required"><?php echo $eigo ? 'State/Province/Prefecture' : '都道府県'; ?></td>
-                <td><input type="text" name="prefecture" placeholder="<?php echo $eigo ? 'Tokyo' : '東京都'; ?>" value="<?php echo $tmpstore['prefecture'] ?>" /></td>
+                <td class="required"><?= $eigo ? 'State/Province/Prefecture' : '都道府県'; ?></td>
+                <td><input type="text" name="prefecture" placeholder="<?= $eigo ? 'Tokyo' : '東京都'; ?>" value="<?= $tmpstore['prefecture'] ?>" /></td>
               </tr>
               <tr>
-                <td class="required"><?php echo $eigo ? 'City/Town' : '市区町村'; ?></td>
-                <td><input type="text" name="city" placeholder="<?php echo $eigo ? 'Shibuya' : '渋谷区'; ?>" value="<?php echo $tmpstore['city'] ?>" /></td>
+                <td class="required"><?= $eigo ? 'City/Town' : '市区町村'; ?></td>
+                <td><input type="text" name="city" placeholder="<?= $eigo ? 'Shibuya' : '渋谷区'; ?>" value="<?= $tmpstore['city'] ?>" /></td>
               </tr>
               <tr>
-                <td class="required"><?php echo $eigo ? 'Address 1 (street + number)' : '町名＋番地'; ?></td>
-                <td><input type="text" name="address1" placeholder="<?php echo $eigo ? 'Ebisu 1-2-3' : '恵比寿１丁目2-3'; ?>" value="<?php echo $tmpstore['address1'] ?>" /></td>
+                <td class="required"><?= $eigo ? 'Address 1 (street + number)' : '町名＋番地'; ?></td>
+                <td><input type="text" name="address1" placeholder="<?= $eigo ? 'Ebisu 1-2-3' : '恵比寿１丁目2-3'; ?>" value="<?= $tmpstore['address1'] ?>" /></td>
               </tr>
               <tr>
-                <td><?php echo $eigo ? 'Address 2 (optional)' : 'マンション（任意）'; ?></td>
-                <td><input type="text" name="address2" placeholder="<?php echo $eigo ? 'Moriya Shrine 200F' : '守谷神社 200階'; ?>" value="<?php echo $tmpstore['address2'] ?>" /></td>
+                <td><?= $eigo ? 'Address 2 (optional)' : 'マンション（任意）'; ?></td>
+                <td><input type="text" name="address2" placeholder="<?= $eigo ? 'Moriya Shrine 200F' : '守谷神社 200階'; ?>" value="<?= $tmpstore['address2'] ?>" /></td>
               </tr>
               <tr>
-                <td class="required"><?php echo $eigo ? 'Country' : '国'; ?></td>
-                <td><input type="text" name="country" placeholder="<?php echo $eigo ? 'Japan' : '日本'; ?>" value="<?php echo $tmpstore['country'] ?>" /></td>
+                <td class="required"><?~ $eigo ? 'Country' : '国'; ?></td>
+                <td><input type="text" name="country" placeholder="<?= $eigo ? 'Japan' : '日本'; ?>" value="<?= $tmpstore['country'] ?>" /></td>
               </tr>
               <tr>
-                <td class="required"><?php echo $eigo ? 'Email' : 'メール'; ?></td>
-                <td><input type="text" name="email" placeholder="weareanonymous@weare.legion" value="<?php echo $tmpstore['email'] ?>" /></td>
+                <td class="required"><?= $eigo ? 'Email' : 'メール'; ?></td>
+                <td><input type="text" name="email" placeholder="weareanonymous@weare.legion" value="<?= $tmpstore['email'] ?>" /></td>
               </tr>
             </table>
 
diff --git a/www/shipping/2.php b/www/shipping/2.php
index 28a8f96..4e97d79 100644
--- a/www/shipping/2.php
+++ b/www/shipping/2.php
@@ -1,4 +1,4 @@
 <?php
   $address = 'monero:'.MONERO_ADDRESS.'?tx_amount='.$sum;
 ?>
-          <img src="" alt="<?php echo $address; ?>" />
+          <img src="" alt="<?= $address; ?>" />
