Added check for iconv and mbstring during install. Logic checks for i…

…conv function exists first, if it does then it will not check for mbstring as only 1 is needed.

If neither are available then it will prompt for user to enable mbstring. This is only based on the assumption mbstring is better/quicker and should also be easier to enable in php by a user.

upload/install/controller/step_2.php

@@ -10,7 +10,7 @@ public function index() {
 		if (isset($this->error['warning'])) {
 			$this->data['error_warning'] = $this->error['warning'];
 		} else {
-			$this->data['error_warning'] = '';	
+			$this->data['error_warning'] = '';
 		}
 
 		$this->data['action'] = $this->url->link('step_2');
@@ -31,7 +31,7 @@ public function index() {
 		$this->children = array(
 			'header',
 			'footer'
-		);		
+		);
 
 		$this->response->setOutput($this->render());
 	}
@@ -69,6 +69,13 @@ private function validate() {
 			$this->error['warning'] = 'Warning: ZLIB extension needs to be loaded for OpenCart to work!';
 		}
 
+		if (!function_exists('iconv')) {
+			// iconv or mbstrings are used in the utf8 helper. Only 1 is needed but suggested to enable mbstring if iconv is not set
+			if (!extension_loaded('mbstring')) {
+				$this->error['warning'] = 'Warning: mbstring extension needs to be loaded for OpenCart to work!';
+			}
+		}
+
 		if (!file_exists(DIR_OPENCART . 'config.php')) {
 			$this->error['warning'] = 'Warning: config.php does not exist. You need to rename config-dist.php to config.php!';
 		} elseif (!is_writable(DIR_OPENCART . 'config.php')) {

upload/install/view/template/step_2.tpl

@@ -93,6 +93,14 @@
           <td>On</td>
           <td align="center"><?php echo extension_loaded('zlib') ? '<img src="view/image/good.png" alt="Good" />' : '<img src="view/image/bad.png" alt="Bad" />'; ?></td>
         </tr>
+        <?php if (!function_exists('iconv')) { ?>
+        <tr>
+          <td>mbstring:</td>
+          <td><?php echo extension_loaded('mbstring') ? 'On' : 'Off'; ?></td>
+          <td>On</td>
+          <td align="center"><?php echo extension_loaded('mbstring') ? '<img src="view/image/good.png" alt="Good" />' : '<img src="view/image/bad.png" alt="Bad" />'; ?></td>
+        </tr>
+        <?php } ?>
       </table>
     </fieldset>
     <p>3. Please make sure you have set the correct permissions on the files list below.</p>
@@ -167,4 +175,4 @@
     </div>
   </form>
 </div>
-<?php echo $footer; ?>
+<?php echo $footer; ?>