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[ArtemKrass01]

Допустим есть несколько строк такого вида:

"50":{"id":16600,"name":"\u0420\u043e\u0441\u0433\u0430\u0432","dir":"n","expansion_stage":3,"x":775,"y":639,"ox":181,"oy":236,"offer":"iron","demand":"wood"}

"54":{"id":19409,"name":"\u0420\u043e\u0441\u043d\u043e\u0441\u043a\u043e\u043d\u043e\u0441","dir":"n","expansion_stage":3,"x":788,"y":648,"ox":629,"oy":170,"offer":"stone","demand":"wood","mood":100,"relation_status":1,"ratio":1.25,"loot":1342173457,"lootable_human":"13.07.12 \u0432 13:57","looted":1342173157}

"52":{"id":18546,"name":"\u0413\u0430\u0432\u043d\u044d\u0439\u043a\u043e\u0434\u0440\u044d\u0439","dir":"n","expansion_stage":4,"x":776,"y":656,"ox":700,"oy":200,"offer":"iron","demand":"wood"}

"53":{"id":18550,"name":"\u041d\u043e\u0441\u0445\u0438\u0433\u0430\u0432\u0440\u043e","dir":"n","expansion_stage":4,"x":776,"y":656,"ox":452,"oy":92,"offer":"iron","demand":"wood"}

"57":{"id":19412,"name":"\u0422\u0430\u0445\u0438\u0433\u0430","dir":"n","expansion_stage":3,"x":788,"y":648,"ox":694,"oy":296,"offer":"stone","demand":"wood","mood":100,"relation_status":0,"ratio":1.25}

Как мне выбрать то, что находится между {.....}, но только те, где встречается relation_status...

???

Т.е. оставить только

{"id":19409,"name":"\u0420\u043e\u0441\u043d\u043e\u0441\u043a\u043e\u043d\u043e\u0441","dir":"n","expansion_stage":3,"x":788,"y":648,"ox":629,"oy":170,"offer":"stone","demand":"wood","mood":100,"relation_status":1,"ratio":1.25,"loot":1342173457,"lootable_human":"13.07.12 \u0432 13:57","looted":1342173157}

{"id":19412,"name":"\u0422\u0430\u0445\u0438\u0433\u0430","dir":"n","expansion_stage":3,"x":788,"y":648,"ox":694,"oy":296,"offer":"stone","demand":"wood","mood":100,"relation_status":0,"ratio":1.25}

 

[Redjik]

http://www.php.net/manual/ru/function.json-decode.php