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<?php $jis_bytes = '1b244224221b2842'; // 'あ' in ISO-2022-JP $jis_bytes_without_esc = '1b24422422'; // 'あ' in ISO-2022-JP without escape sequence var_dump(mb_check_encoding(hex2bin($jis_bytes), 'JIS')); var_dump(mb_check_encoding(hex2bin($jis_bytes_without_esc), 'JIS')); var_dump(mb_check_encoding(hex2bin($jis_bytes_without_esc), 'ISO-2022-JP-2004')); var_dump(mb_check_encoding(hex2bin($jis_bytes_without_esc), 'ISO-2022-JP-MS')); var_dump(mb_check_encoding(hex2bin($jis_bytes_without_esc), 'CP50220')); var_dump(mb_check_encoding(hex2bin($jis_bytes_without_esc), 'CP50221')); var_dump(mb_check_encoding(hex2bin($jis_bytes_without_esc), 'CP50222')); var_dump(mb_check_encoding(hex2bin($jis_bytes_without_esc), 'ISO-2022-JP-MOBILE#KDDI'));
Output for 8.1.18 - 8.1.33, 8.2.5 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14, 8.4.16, 8.5.0 - 8.5.1
bool(true) bool(false) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true)
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.3.28
/bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28)
Process exited with code 1.
Output for 8.1.0 - 8.1.17, 8.2.0 - 8.2.4
bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true)
Output for 8.0.1 - 8.0.30
bool(true) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false)

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