The underlying return of such JSON string, in the front-end or PHP section how to change N and T to the corresponding carriage return and tab symbol?

{"msg":"{\n \"iaback\" : {\n \"code\" : -3522,\n \"msg\" : \"\"\n },\n \"iawork\" : {\n \"code\" : 0,\n \"msg\" : \"---------------LibRxTx Info:--------------\\nCurrent peer:\\t4\\nWork Thread 0 235\\nWork Thread 1 255\\nWork Thread 2 247\\nWork Thread 3 244\\nEpLoop\\t\\t2513\\nEpRead\\t\\t1876\\nEpMoreRead\\t0\\nEpWrite\\t\\t895\\nSndLoop\\t\\t2183\\nPeerSnd\\t\\t1805\\nSndSw\\t\\t0\\nBufSnd\\t\\t908\\nAccept\\t\\t1778\\nPeerRcv\\t\\t1085\\nBufRcv\\t\\t1974\\nAddJob\\t\\t988\\nGetJob\\t\\t986\\nGetMore\\t\\t985\\nPktSnd\\t\\t888\\nPktRcv\\t\\t889\\nSndWait\\t\\t0\\nSndWaitAck\\t0\\n-------> Epoll 0\\nIdx ID RID State pktSnd ackRcv pktRcv pktExe ackSnd bw(Bps) Zip Retry\\tName\\n0 1 0 Lsn 0 0 0 0 0 -1 100 0\/-1\\t 127.0.0.1:26826 <--> :\\n1 2 0 Try 0 0 0 0 0 -1 100 96\/-1\\t :44115 <--> 192.168.17.9:26828\\n2 891 0 OK 0 0 1 0 0 -1 100 0\/-1\\tIPC 127.0.0.1:26826 <--> 127.0.0.1:57872\\n\"\n }\n}\n","result":0} 

I want to display a formatted, readable JSON string on the front

Reply content:

{"msg":"{\n \"iaback\" : {\n \"code\" : -3522,\n \"msg\" : \"\"\n },\n \"iawork\" : {\n \"code\" : 0,\n \"msg\" : \"---------------LibRxTx Info:--------------\\nCurrent peer:\\t4\\nWork Thread 0 235\\nWork Thread 1 255\\nWork Thread 2 247\\nWork Thread 3 244\\nEpLoop\\t\\t2513\\nEpRead\\t\\t1876\\nEpMoreRead\\t0\\nEpWrite\\t\\t895\\nSndLoop\\t\\t2183\\nPeerSnd\\t\\t1805\\nSndSw\\t\\t0\\nBufSnd\\t\\t908\\nAccept\\t\\t1778\\nPeerRcv\\t\\t1085\\nBufRcv\\t\\t1974\\nAddJob\\t\\t988\\nGetJob\\t\\t986\\nGetMore\\t\\t985\\nPktSnd\\t\\t888\\nPktRcv\\t\\t889\\nSndWait\\t\\t0\\nSndWaitAck\\t0\\n-------> Epoll 0\\nIdx ID RID State pktSnd ackRcv pktRcv pktExe ackSnd bw(Bps) Zip Retry\\tName\\n0 1 0 Lsn 0 0 0 0 0 -1 100 0\/-1\\t 127.0.0.1:26826 <--> :\\n1 2 0 Try 0 0 0 0 0 -1 100 96\/-1\\t :44115 <--> 192.168.17.9:26828\\n2 891 0 OK 0 0 1 0 0 -1 100 0\/-1\\tIPC 127.0.0.1:26826 <--> 127.0.0.1:57872\\n\"\n }\n}\n","result":0} 

I want to display a formatted, readable JSON string on the front

Do you want to display the formatted JSON on the browser?
Var_export (Json_decode ($json _string)); try this. You can format the structure of the saved object.
But if you're on the browser, it doesn't fit, and he prints the object information.
Show only JSON formatted characters, there are two ways to see your PHP version 5.4 before you write your own processing functions, Google a lot of.
After 5.4 versions can be directly like this:
Echo Json_encode ($arr, json_unescaped_unicode| Json_pretty_print);
The printed result is the finished format.

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