я отсылаю get запрос по адресу
https://api.vk.com/method/wall.get?owner_id=-34064... получаю ответ
{"response":[17826,{"id":38748,"from_id":-34064059,"to_id":-34064059,"date":1415138263,"post_type":"post","text":"","attachment":{"type":"photo","photo":{"pid":343974745,"aid":-7,"owner_id":-34064059,"user_id":100,"src":"http:\/\/cs7003.vk.me\/c540104\/v540104662\/235d8\/2H24WUqDNf8.jpg","src_big":"http:\/\/cs7003.vk.me\/c540104\/v540104662\/235d9\/YkfVFBCO0ug.jpg","src_small":"http:\/\/cs7003.vk.me\/c540104\/v540104662\/235d7\/xMKTipZMDJA.jpg","width":604,"height":401,"text":"","created":1415138263,"post_id":38748,"access_key":"26180eb98231e05433"}},"attachments":[{"type":"photo","photo":{"pid":343974745,"aid":-7,"owner_id":-34064059,"user_id":100,"src":"http:\/\/cs7003.vk.me\/c540104\/v540104662\/235d8\/2H24WUqDNf8.jpg","src_big":"http:\/\/cs7003.vk.me\/c540104\/v540104662\/235d9\/YkfVFBCO0ug.jpg","src_small":"http:\/\/cs7003.vk.me\/c540104\/v540104662\/235d7\/xMKTipZMDJA.jpg","width":604,"height":401,"text":"","created":1415138263,"post_id":38748,"access_key":"26180eb98231e05433"}}],"comments":{"count":0},"likes":{"count":57},"reposts":{"count":2}}]}
как мне спарсить
"src_big":"http:\/\/cs7003.vk.me\/c540104\/v540104662\/235d9\/YkfVFBCO0ug.jpg"
и обработать до вида
src_big=http://cs7003.vk.me/c540104/v540104662/235d9/YkfVFBCO0ug.jpg
