Speed fix

src/Zend/Db/Statement.php

@@ -175,25 +175,23 @@ abstract class Zend_Db_Statement implements Zend_Db_Statement_Interface
         // get the character for value quoting
         // this should be '
         $q = $this->_adapter->quote('a');
-        $q = $q[0];
+        $q = $q[0];        
         // get the value used as an escaped quote,
         // e.g. \' or ''
         $qe = $this->_adapter->quote($q);
         $qe = substr($qe, 1, 2);
         $qe = preg_quote($qe);
-        $escapeChar = substr($qe, 0, 1);
+        
         // remove 'foo\'bar'
         if (!empty($q)) {
-            $escapeChar = preg_quote($escapeChar);
-            // this segfaults only after 65,000 characters instead of 9,000
-            $sql = preg_replace("/$q([^$q{$escapeChar}]*|($qe)*)*$q/s", '', $sql);
+            $sql = preg_replace("/$q($qe+|\\\\{2}+|[^$q]+|(?<=\\\\)$q)*$q/", '', $sql); # i3MEDIA fix for DB speed issues
         }
-
+        
         // get a version of the SQL statement with all quoted
         // values and delimited identifiers stripped out
         // remove "foo\"bar"
-        $sql = preg_replace('/"(\\\\"|[^"])*"/Us', '', $sql);
-
+        $sql = preg_replace("/\"(\\\\\"|[^\"])*\"/Us", '', $sql);
+        
         // get the character for delimited id quotes,
         // this is usually " but in MySQL is `
         $d = $this->_adapter->quoteIdentifier('a');
@@ -205,7 +203,6 @@ abstract class Zend_Db_Statement implements Zend_Db_Statement_Interface
         $de = preg_quote($de);
         // Note: $de and $d where never used..., now they are:
         $sql = preg_replace("/$d($de|\\\\{2}|[^$d])*$d/Us", '', $sql);
-
         return $sql;
     }