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<?php $input = "sea \u{200B}\u{200B}lion"; echo preg_replace_callback('#\X#u', function($m) { $utf16 = mb_convert_encoding($m[0], 'UTF-16BE', 'UTF-8'); if (strlen($utf16) <= 2) { $esc = '\u' . bin2hex($utf16); } else { $esc = '\u' . bin2hex(substr($utf16, 0, 2)) . '\u' . bin2hex(substr($utf16, 2, 2)); } return $esc; }, $input);
Output for 7.1.25 - 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
\u0073\u0065\u0061\u0020\u200b\u200b\u006c\u0069\u006f\u006e
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.
preferences:
182.71 ms | 407 KiB | 5 Q