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<?php function dostuff() { echo 'mb_check_encoding: '; if ( function_exists( 'mb_check_encoding' ) ) { var_dump( mb_check_encoding( "\xF4\x90\x80\x80", 'UTF-8' ) ); var_dump( mb_check_encoding( "\xEF\xBF\xBF", 'UTF-8' ) ); } else { echo "absent\n"; } echo 'preg_match: '; if ( function_exists( 'preg_match' ) ) { var_dump(preg_match( '//u', "\xF4\x90\x80\x80" )); var_dump(preg_match( '//u', "\xEF\xBF\xBF" )); } else { echo "absent\n"; } } dostuff();
Output for 5.4.0 - 5.4.13, 5.4.41 - 5.4.45, 5.5.10 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
mb_check_encoding: bool(false) bool(true) preg_match: bool(false) int(1)
Output for 5.4.14 - 5.4.40, 5.5.0 - 5.5.9
mb_check_encoding: bool(false) bool(true) preg_match: bool(false) bool(false)
Output for 5.3.24 - 5.3.29
mb_check_encoding: bool(true) bool(true) preg_match: bool(false) bool(false)
Output for 5.3.4 - 5.3.23
mb_check_encoding: bool(true) bool(true) preg_match: bool(false) int(1)
Output for 4.4.9, 5.2.5 - 5.2.17, 5.3.0 - 5.3.3
mb_check_encoding: bool(true) bool(true) preg_match: int(0) int(1)
Output for 4.4.3 - 4.4.8, 5.1.3 - 5.1.6, 5.2.0 - 5.2.4
mb_check_encoding: bool(true) bool(true) preg_match: int(1) int(1)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.2, 5.0.0 - 5.0.5, 5.1.0 - 5.1.2
mb_check_encoding: absent preg_match: int(1) int(1)

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299.37 ms | 402 KiB | 457 Q