Thank you for your help!
Batch Import is so useful to me!
But i make a litte change with Batch improt.
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$pic_keywords = substr($dir_array[$cat]['cat_path'],3);
$pic_keywords = str_replace("/"," ",$pic_keywords);
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i use add images' folder name as it's keywords.
It's can improt successful, but can't search with these keywords.
I try edit a image,but do nothing!
After submit edit, i found these keywords can running.
It's Why? Please help me.