Problem description
Magento Checkout is blank/empty after installing SUPEE-10415, the following error logged in PHP error log:PHP Fatal error: Cannot redeclare Mage_Core_Helper_String::unserialize() in app/code/core/Mage/Core/Helper/String.php on line 505
Cause
app/code/core/Mage/Core/Helper/String.php file got patched twice (either due to manual action or by file upload from another Magento version). As result,unserialize() function is defined twice and causing fatal error.
Solution
Delete extra definition ofunserialize() function in app/code/core/Mage/Core/Helper/String.php file:
--- app/code/core/Mage/Core/Helper/String.php
+++ app/code/core/Mage/Core/Helper/String.php
@@ -496,25 +496,5 @@
return $this->_arrayHelper;
}
- /**
- * UnSerialize string
- * @param $str
- * @return mixed|null
- * @throws Exception
- */
- public function unserialize($str)
- {
- $reader = new Unserialize_Reader_ArrValue('data');
- $prevChar = null;
- for ($i = 0; $i < strlen($str); $i++) {
- $char = $str[$i];
- $result = $reader->read($char, $prevChar);
- if (!is_null($result)) {
- return $result;
- }
- $prevChar = $char;
- }
- }
-
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Posted in: Fatal errors, supee-10415