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@ 2017-02-17T13:17:05Z

<?php

function nothingspecial($dings) {
    $dinging = function ($ding) {
        $ding = 
		    preg_replace("/[^- ()\.\&,_'´`áàäçéèêñóòôöüæøåìíùúâêîôûÁÀÄÇÉÈÊÑÓÒÔÖÜÆØÅÌÍÙÚÂÊÎÔÛß@€:0-9a-zA-Z&+]/",
		    " ",
		    $ding
        );
        
		$ding = stripslashes(trim(str_replace("'","´",$ding)));
		$funduz = array('&auml ','&ouml ','&uuml ','&Auml ','&Ouml ','&Uuml ','&szlig ');
		$ersetzuz = array('ä','ö','ü','Ä','Ö','Ü','ß');
		$ding = str_replace($funduz, $ersetzuz, $ding);

		return $ding;
    };
	
	return is_array($dings)
	        ? array_map($dinging, $dings)
	        : $dinging($dings);
}

function old_nothingspecial($dings) {
		$dings = preg_replace("/[^- ()\.\&,_'´`áàäçéèêñóòôöüæøåìíùúâêîôûÁÀÄÇÉÈÊÑÓÒÔÖÜÆØÅÌÍÙÚÂÊÎÔÛß@€:0-9a-zA-Z&+]/"," ", $dings);
		$dings = stripslashes(trim(str_replace("'","´",$dings)));
		$funduz = array('&auml ','&ouml ','&uuml ','&Auml ','&Ouml ','&Uuml ','&szlig ');
		$ersetzuz = array('ä','ö','ü','Ä','Ö','Ü','ß');
		$dings = str_replace($funduz,$ersetzuz,$dings);
		return $dings;
	}

var_dump(old_nothingspecial(['DópÂ\n']));
var_dump(old_nothingspecial('DópÂ\n'));

Output for 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: Fatal error: Uncaught TypeError: trim(): Argument #1 ($string) must be of type string, array given in /in/gZ4Hp:26 Stack trace: #0 /in/gZ4Hp(26): trim(Array) #1 /in/gZ4Hp(33): old_nothingspecial(Array) #2 {main} thrown in /in/gZ4Hp on line 26
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: trim(): Argument #1 ($string) must be of type string, array given in /in/gZ4Hp:26 Stack trace: #0 /in/gZ4Hp(26): trim(Array) #1 /in/gZ4Hp(33): old_nothingspecial(Array) #2 {main} thrown in /in/gZ4Hp on line 26
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Warning: trim() expects parameter 1 to be string, array given in /in/gZ4Hp on line 26 string(0) "" string(8) "DópÂ n"

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