Online PHP editor | output for QLrtp

@ 2015-11-10T03:00:03Z

<?php
class Qualtrics {
    public $input;
    public function __construct($input)
    {
        $this->input = $input;
    }
    public function output(){
        if($this->allowedFormat($this->input))
        {
            echo $this->input;
        } else {
            echo 'Disallowed Characters';
        }
    }
    private function multiply($factor){
        $this->input *=factor;
    }
    private function allowedFormat($qString){
        return preg_match("/^[a-z0-9:_/\-]+$/i", $qString);
        
    }
}
$qObject = new Qualtrics("string of words");
$qObject ->output();

Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 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, 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: Warning: preg_match(): Unknown modifier '\' in /in/QLrtp on line 20 Disallowed Characters
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 Warning: preg_match(): Unknown modifier '\' in /in/QLrtp on line 20 Disallowed Characters

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