<?php // This returns as expected. $str = "\xf8foo"; var_dump( mb_detect_encoding($str, 'UTF-8'), // bool(false) mb_detect_encoding($str, 'UTF-8', true) // bool(false) ); // This does not. $str = "foo\xf8"; var_dump( mb_detect_encoding($str, 'UTF-8'), // string(5) "UTF-8" mb_detect_encoding($str, 'UTF-8', true) // bool(false) ); // Nor does this. $str = "\xe1\xe9\xf3\xfa"; var_dump( mb_detect_encoding($str, 'UTF-8'), // string(5) "UTF-8" mb_detect_encoding($str, 'UTF-8', true) // bool(false) );
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