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msd2/tracking/piwik/core/DataAccess/TableMetadata.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+namespace Piwik\DataAccess;
+
+use Piwik\Db;
+
+/**
+ * Data Access Object that can be used to get metadata information about
+ * the MySQL tables Piwik uses.
+ */
+class TableMetadata
+{
+    /**
+     * Returns the list of column names for a table.
+     *
+     * @param string $table Prefixed table name.
+     * @return string[] List of column names..
+     */
+    public function getColumns($table)
+    {
+        $table = str_replace("`", "", $table);
+
+        $columns = Db::fetchAll("SHOW COLUMNS FROM `" . $table . "`");
+
+        $columnNames = array();
+        foreach ($columns as $column) {
+            $columnNames[] = $column['Field'];
+        }
+
+        return $columnNames;
+    }
+
+    /**
+     * Returns the list of idaction columns in a table. A column is
+     * assumed to be an idaction reference if it has `"idaction"` in its
+     * name (eg, `"idaction_url"` or `"idaction_content_name"`.
+     *
+     * @param string $table Prefixed table name.
+     * @return string[]
+     */
+    public function getIdActionColumnNames($table)
+    {
+        $columns = $this->getColumns($table);
+
+        $columns = array_filter($columns, function ($columnName) {
+            return strpos($columnName, 'idaction') !== false;
+        });
+
+        return array_values($columns);
+    }
+}