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Add function db_Table_exists()

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mrpete
2007-03-04 15:00:19 +00:00
parent 27774caa1c
commit b6c0946f37
1 changed files with 24 additions and 7 deletions
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31
e107_handlers/mysql_class.php
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@@ -1,10 +1,10 @@
<?php <?php
/* /*
+---------------------------------------------------------------+ +---------------------------------------------------------------+
| e107 website system | e107 website system
| |
| <EFBFBD>Steve Dunstan 2001-2002 | Steve Dunstan 2001-2002
| http://e107.org | http://e107.org
| jalist@e107.org | jalist@e107.org
| |
@@ -12,9 +12,9 @@
| GNU General Public License (http://gnu.org). | GNU General Public License (http://gnu.org).
| |
| $Source: /cvs_backup/e107_0.8/e107_handlers/mysql_class.php,v $ | $Source: /cvs_backup/e107_0.8/e107_handlers/mysql_class.php,v $
| $Revision: 1.7 $ | $Revision: 1.8 $
| $Date: 2007-02-20 17:43:17 $ | $Date: 2007-03-04 15:00:19 $
| $Author: e107coders $ | $Author: mrpete $
+----------------------------------------------------------------------------+ +----------------------------------------------------------------------------+
*/ */
@@ -27,8 +27,8 @@ $db_mySQLQueryCount = 0; // Global total number of db object queries (all db's)
* MySQL Abstraction class * MySQL Abstraction class
* *
* @package e107 * @package e107
* @version $Revision: 1.7 $ * @version $Revision: 1.8 $
* @author $Author: e107coders $ * @author $Author: mrpete $
*/ */
class db { class db {
@@ -779,6 +779,23 @@ class db {
return mysql_real_escape_string($data,$this->mySQLaccess); return mysql_real_escape_string($data,$this->mySQLaccess);
} }
/*
* Verify whether a table exists, without causing an error
*
* @param string $table
* @return string
*
* NOTES: the 'official' way to do this uses SHOW TABLE STATUS, but that is 20x slower!
* LIMIT 0 is 3x slower than LIMIT 1
*/
function db_Table_exists($table){
$res = $this->db_Query("SELECT 1 FROM ".MPREFIX.$table." LIMIT 1"); // error if not there
if ($res) return TRUE;
return FALSE;
}
} }
?> ?>