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avoid warning in php5.3, if argument is an array
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@ -1244,7 +1244,7 @@ function function_backtrace($remove=0)
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{
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$ret[] = (isset($level['class'])?$level['class'].$level['type']:'').$level['function'].
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(!$level['class'] && !is_object($level['args'][0]) && $level['function'] != 'unserialize' ?
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'('.substr(str_replace(EGW_SERVER_ROOT,'',$level['args'][0]),0,64).')' : '');
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'('.substr(str_replace(EGW_SERVER_ROOT,'',(string)$level['args'][0]),0,64).')' : '');
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}
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}
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if (is_array($ret))
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