magento - PHP : Frustrated with string encoding -


i using magento advance dataflow import importing products , have csv of products me import problem because of 1 colum in csv giving me error notice: unserialize() [function.unserialize]: error @ offset 2570 of 2616 bytes in /home/content/58/10476058/html/aaron/app/code/core/mage/dataflow/model/batch/abstract.php on line 66

i have tried removing column , working fine have tried taking care of special characters while creating csv using htmlspcialchars , urf_encode fot 1 column behaving odd

i have code me : 

/*start getting bundle items*/             $bundle_items='';             foreach($html('.input-box option') $option){                     if($option->getplaintext()!='choose selection...'){                         $bundle_items.=$option->getplaintext().'|';                     }             }              $bundle_items = rtrim($bundle_items,'|');             $bundle_items = trim($bundle_items);

the $bundle_items string of items coming
12' round emerald isle unibead liner 52"   +$137.95|15' round emerald isle unibead liner 52"   +$167.95|18" round emerald isle unibead liner 52"   +$204.95|21' round emerald isle unibead liner 52"   +$247.95|27' round emerald isle unibead liner 52"   +$376.95|28' round emerald isle unibead liner 52"   +$427.95|30' round emerald isle unibead liner 52"   +$491.95|33' round emerald isle unibead liner 52"   +$556.95

i have tried 

$bundle_items.=utf8_encode($option->getplaintext()).'|';   $bundle_items.=htmlspecialchars($option->getplaintext()).'|';

but after $bundle_items has nothing in it.. not getting how work around 3 days frustrating.

any idea folks how rid this. edit : --------------------------------------------------------------------------------

i have thought char ' , " giving problem in unserialize() have test test string test' 12" , working fine original string throwing error.


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