Add missing checks for requirements

app/check_setup.php

@@ -33,9 +33,9 @@ if (DB_DRIVER === 'postgres' && ! extension_loaded('pdo_pgsql')) {
 }
 
 // Check other extensions
-foreach (array('gd', 'mbstring', 'hash', 'openssl', 'json', 'hash', 'ctype', 'filter', 'session') as $ext) {
+foreach (array('gd', 'mbstring', 'hash', 'openssl', 'json', 'hash', 'ctype', 'filter', 'session', 'dom', 'filter', 'SimpleXML', 'xml') as $ext) {
     if (! extension_loaded($ext)) {
-        throw new Exception('PHP extension required: "'.$ext.'"');
+        throw new Exception('This PHP extension is required: "'.$ext.'"');
     }
 }
 

composer.json

@@ -15,6 +15,9 @@
     },
     "require" : {
         "php" : ">=5.3.9",
+        "ext-simplexml" : "*",
+        "ext-dom" : "*",
+        "ext-xml" : "*",
         "ext-gd" : "*",
         "ext-mbstring" : "*",
         "ext-hash" : "*",

doc/en_US/requirements.markdown

@@ -75,6 +75,10 @@ Kanboard is pre-configured to work with Apache (URL rewriting).
 | hash                       |                               |
 | ctype                      |                               |
 | session                    |                               |
+| filter                     |                               |
+| xml                        |                               |
+| SimpleXML                  |                               |
+| dom                        |                               |
 | ldap                       | Only for LDAP authentication  |
 | Zend OPcache               | Recommended                   |