Online PHP editor | output for NeqNo

@ 2017-12-07T10:18:54Z

<?php
//echo 'PHP_VERSION: ', PHP_VERSION, "\n";
mb_regex_encoding('UTF-8') || exit("mb_regex_encoding('UTF-8') error.");
foreach (['0085', '180e'] as $hex) {
    $utf8 = mb_convert_encoding(pack('N', hexdec($hex)), 'UTF-8', 'UTF-32BE');
    echo "U+{$hex}", (mb_ereg_match('\A[\s]\z', $utf8) ? ' match \\s !' : '')."\n";
}
foreach (['00ad', '200B'] as $hex) {
    $utf8 = mb_convert_encoding(pack('N', hexdec($hex)), 'UTF-8', 'UTF-32BE');
    echo "U+{$hex}", (mb_ereg_match('\A[[:cntrl:]]\z', $utf8) ? ' match cntrl !' : '')."\n";
}

Output for 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 - 8.3.4, 8.3.6: U+0085 match \s ! U+180e U+00ad U+200B
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 U+0085 match \s ! U+180e U+00ad U+200B
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33: U+0085 U+180e match \s ! U+00ad match cntrl ! U+200B match cntrl !

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