php开发-无法解析json

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php开发-无法解析json

问题描述： 无法解析回调的json数据，json_decode() 函数返回null,接收的数据直接放postman 中解析正常
file_get_contents(‘php://input’)接收到就有乱码

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$HEX="7b2273657269616c4e756d626572223a22323032353132323331373330333539333"
  ."6354646222c226f726465724964223a22464c4f5730303132303030313030323531323233"
  ."313733303436383134313439222c22737461747573223a2d312c226d657373616765223a22"
  ."453c3125de031ae51a453c3125286661696c656429222c22766f7563686572223a226661696c6564227d"
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{"serialNumber":"2025122317303593751B","orderId":"FLOW0012000100251223173046814154","status":-1,"message":"E<1%?^C^Z?^ZE<1%(failed)","voucher":"failed"}

解决方法：
有换行符之类POSIX字符造成的
最终问题可能在php接收前，那边被转码造成的,因为php端接收到就是乱码了

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$converted = mb_convert_encoding($content, 'UTF-8', "UTF-8");
$clean = preg_replace('/[[:cntrl:]]/', '', $converted);
$data = json_decode($clean, true);