Online PHP editor | output for mbs0r

@ 2017-02-04T03:15:14Z

<?php
header('Content-Type: text/html; charset=UTF-8');

$str = "<h1>He'llü & Wor&#39;ldÆØÅÅÅ!</h1>" . "\tcafé\n";
if ('UTF-8' !== mb_detect_encoding($str)) {
    $str = utf8_encode($str);
}
var_dump($str);

$str = html_entity_decode($str, ENT_QUOTES | ENT_XML1, 'UTF-8');
var_dump($str);

$str = filter_var(html_entity_decode($str, ENT_QUOTES | ENT_XML1, 'UTF-8'), 
        FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_HIGH | FILTER_FLAG_NO_ENCODE_QUOTES);
var_dump($str);

#$newstr = preg_replace('/\s[\s]+/', ' ', $str);  // Strip off multiple spaces 
$newstr = preg_replace('/[^\000-\128]+/', '', $str);  // Strip off non-alpha-numeric
#$newstr = preg_replace('/[\s\W]+/', '-', $newstr);  // Strip off spaces and non-alpha-numeric
#$newstr = preg_replace('/[^A-Za-z0-9_-]+/', '', $newstr);

var_dump($newstr);

Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: string(47) "<h1>He'llü & Wor'ldÆØÅÅÅ!</h1> café " string(43) "<h1>He'llü & Wor'ldÆØÅÅÅ!</h1> café " Deprecated: Constant FILTER_SANITIZE_STRING is deprecated in /in/mbs0r on line 14 string(18) "He'll & Wor'ld!caf" string(0) ""
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 string(47) "<h1>He'llü & Wor'ldÆØÅÅÅ!</h1> café " string(43) "<h1>He'llü & Wor'ldÆØÅÅÅ!</h1> café " Deprecated: Constant FILTER_SANITIZE_STRING is deprecated in /in/mbs0r on line 14 string(18) "He'll & Wor'ld!caf" string(0) ""
Output for 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: string(47) "<h1>He'llü & Wor'ldÆØÅÅÅ!</h1> café " string(43) "<h1>He'llü & Wor'ldÆØÅÅÅ!</h1> café " string(18) "He'll & Wor'ld!caf" string(0) ""

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