ESTRICT fixes
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@ -253,7 +253,7 @@ class PEAR
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* @access public
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* @return bool true if parameter is an error
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*/
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function isError($data, $code = null)
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static function isError($data, $code = null)
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{
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if (is_a($data, 'PEAR_Error')) {
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if (is_null($code)) {
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