Display actual file and line number where the sql error is occured.

Make a change to display actual file and line number where the sql error is occured.
When there is a sql error it will also display model file name where the error is occured.

Author: jimymodi

upload/system/database/mysql.php

@@ -47,7 +47,11 @@ public function query($sql) {
 					return true;
 				}
 			} else {
-				trigger_error('Error: ' . mysql_error($this->link) . '<br />Error No: ' . mysql_errno($this->link) . '<br />' . $sql);
+        		$trace = debug_backtrace();
+    			$caller = array_shift($trace);
+    			$caller = array_shift($trace);
+    			
+    			trigger_error('Error: ' . mysql_error($this->link) . '<br />Error No: ' . mysql_errno($this->link) . '<br /> Error in: <b>' . $caller['file'] . '</b> line <b>' . $caller['line'] . '</b> <br/>' . $sql);
 				exit();
 			}
 		}
@@ -77,4 +81,4 @@ public function __destruct() {
 		}
 	}
 }
-?>
+?>