php - Concerning the post picture size of facebook page/group feed by Graph Api -


i displaying feed/posts of facebook page/group via graph api in site calling url in php code -

https://graph.facebook.com/page_id/feed?access_token=token_value

then, among many type of posts, post of picture type picture url

http://photos-g.ak.fbcdn.net/hphotos-ak-frc3/t1.0-0/1972372_10152261154160659_883879121_s.jpg

now it's small size last part "_s.jpg" indicates.but want picture sizes large.so achieve parameters needed include in graph api url - "https://graph.facebook.com/page_id/feed?access_token=token_value" picture/video type of posts' picture in large size??, there "_b.jpg" @ last presume.is possible in 1 graph api call?

i searched through google no luck, ended planning replace last part of pic url above "_b.jpg" url -

http://photos-g.ak.fbcdn.net/hphotos-ak-frc3/t1.0-0/1972372_10152261154160659_883879121_b.jpg

but there drawbacks hack?? correct ways achieve if possible in 1 graph api call.

notice, 

/page/feed?fields=attachments

this give of attachments in full sizes. worked charms me


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