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run code in 300+ PHP versions simultaneously
<?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) );
Output for 8.3.0 - 8.3.19, 8.4.1 - 8.4.5
string(5) "UTF-8" bool(false) string(5) "UTF-8" bool(false) string(5) "UTF-8" bool(false)
Output for 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.28
bool(false) bool(false) string(5) "UTF-8" bool(false) string(5) "UTF-8" bool(false)
preferences:
140.64 ms | 409 KiB | 5 Q