From 3f0c17b8efed1a4868d08d3dec87bf16e9481e17 Mon Sep 17 00:00:00 2001
From: skodak <skodak>
Date: Sun, 26 Oct 2008 12:45:05 +0000
Subject: [PATCH] MDL-17020 dml: dollar bound query syntax support

---
 lib/dml/moodle_database.php | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/lib/dml/moodle_database.php b/lib/dml/moodle_database.php
index 9f8727a179b..d3c61258968 100644
--- a/lib/dml/moodle_database.php
+++ b/lib/dml/moodle_database.php
@@ -422,11 +422,18 @@ abstract class moodle_database {
             } else if ($target_type & SQL_PARAMS_NAMED) {
                 return array($sql, $finalparams, SQL_PARAMS_NAMED);
             } else {  // $type & SQL_PARAMS_DOLLAR
-                throw new dml_exception('boundsyntaxnotsupport');
+                $sql = preg_replace_callback('/(?<!:):[a-z][a-z0-9_]*/',
+                                             create_function('$matches', 'static $i=0; $i++; return "\$".$i;'),
+                                             $sql);
+                return array($sql, array_values($finalparams), SQL_PARAMS_DOLLAR); // 0-based required
             }
 
         } else if ($type == SQL_PARAMS_DOLLAR) {
-            throw new dml_exception('boundsyntaxnotsupport');
+            if ($target_type & SQL_PARAMS_DOLLAR) {
+                return array($sql, array_values($params), SQL_PARAMS_DOLLAR); // 0-based required
+            } else {
+                throw new dml_exception('boundsyntaxnotsupport');
+            }
 
         } else { // $type == SQL_PARAMS_QM
             if (count($params) != $count) {
@@ -448,7 +455,10 @@ abstract class moodle_database {
                 }
                 return array($sql, $finalparams, SQL_PARAMS_NAMED);
             } else {  // $type & SQL_PARAMS_DOLLAR
-                throw new dml_exception('boundsyntaxnotsupport');
+                $sql = preg_replace_callback('/\?/',
+                                             create_function('$matches', 'static $i=0; $i++; return "\$".$i;'),
+                                             $sql);
+                return array($sql, array_values($params), SQL_PARAMS_DOLLAR); // 0-based required
             }
         }
     }