javascript - error when insert long text in codegniter -


i work in codegniter , have error 

{"error_string":["\u062d\u0642\u0644 \u0627\u0644\u0645\u0624\u0644\u0641 \u0641\u0627\u0631\u063a","\u062d\u0642\u0644 \u0639\u0646\u0648\u0627\u0646 \u0627\u0644\u0648\u0631\u0642\u0629 \u0641\u0627\u0631\u063a","\u062d\u0642\u0644 \u0627\u0644\u0645\u0644\u062e\u0635 \u0641\u0627\u0631\u063a"],"inputerror":["author","title","abstract"],"status":false}

when insert long text in textarea , when insert short text worked , when insert localhost worked in server in internet not worked , in php.ini memory_limit = 256m post_max_size = 128m


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