How do I PROPERLY check if a string has a "valid byte sequence" for UTF-8 in PHP?

Asked Feb 29 '20 at 09:09

Active Feb 29 '20 at 09:09

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I keep receiving e-mails that are so badly constructed by such incompetent people that it somehow bypasses the PHP check using mb_check_encoding, and thus proceeds to the PostgreSQL INSERT query, which keeps logging this kind of stupid nonsense:

pg_query_params(): Query failed: ERROR:  invalid byte sequence for encoding "UTF8": 0xe4 0x72 0x20:

This has been going on for years and has driven me nearly insane.

I can't use PG function hacks. This check must be done in PHP code.

How do I correctly detect if a string contains "invalid byte sequence" in PHP so that I can reject the e-mail as malformed (or "heal" it so that it contains "valid byte sequence")?

asked Feb 29 '20 at 09:09

user12982416

https://stackoverflow.com/a/57169746/1127933 – Salines Feb 29 '20 at 09:27
Does this answer your question? [invalid byte sequence for encoding "UTF8"](https://stackoverflow.com/questions/4867272/invalid-byte-sequence-for-encoding-utf8) – Robert Kühne Feb 29 '20 at 09:55

How do I *PROPERLY* check if a string has a "valid byte sequence" for UTF-8 in PHP?

0 Answers0

How do I PROPERLY check if a string has a "valid byte sequence" for UTF-8 in PHP?