1 files changed, 22 insertions, 1 deletions
diff --git a/install.php b/install.php
index 1038b400..fa1258e0 100644
--- a/install.php
+++ b/install.php
@@ -49,12 +49,33 @@ define('UPDATE_FAILED', 'UPDATE_FAILED'); // Fatal error occurred, retry will no
 
 function tableHasColumn($table, $column)
 {
+	return tableColumnType($table, $column) !== false;
+}
+
+/**
+ * Get type of column, as reported by DESCRIBE <table>;
+ */
+function tableColumnType($table, $column)
+{
+	return tableGetDescribeColumn($table, $column, 'Type');
+}
+
+function tableColumnKeyType($table, $column)
+{
+	return tableGetDescribeColumn($table, $column, 'Key');
+}
+
+/**
+ * For internal use
+ */
+function tableGetDescribeColumn($table, $column, $what)
+{
 	$table = preg_replace('/\W/', '', $table);
 	$res = Database::simpleQuery("DESCRIBE `$table`", array(), true);
 	if ($res !== false) {
 		while ($row = $res->fetch(PDO::FETCH_ASSOC)) {
 			if ((is_array($column) && in_array($row['Field'], $column)) || (is_string($column) && $row['Field'] === $column))
-				return true;
+				return $row[$what];
 		}
 	}
 	return false;