Fix JSON Decode Error Caused by Special Characters in PHP

1. Error description

For example, the following valid JSON string:

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{"code":200,"name":"This is a Chinese character"}

Use the following code to parse:

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$data = json_decode(mb_convert_encoding($txt, 'UTF-8'), true);

Error JSON invalid.

2. Solution

The problem maybe is that there are invisible characters, you can try to remove:

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$data = json_decode(preg_replace('/[\x00-\x1F\x80-\xFF]/', '', mb_convert_encoding($txt, 'UTF-8')), true);

According to the test, the problem can be solved, if it still can't be solved, you can try to check whether the slash/backslash is grammatical.