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run code in 300+ PHP versions simultaneously

@ 2018-10-16T06:52:12Z

<?php

class bar
{
        public function setup_pins($port_no, $units)
        {
                for ($i = 0; $i < $this->pin_qty[$port_no]; $i++)
                {
                        echo "Setting up pin " . $i . "\n";
                        $this->pin[$i] = new Pin;
                        if ($port_no > 3)
                        {
                                $this->pins = 8;
                        }
                        else
                        {
                                $this->pins = 1;
                        }
                        $this->pin[$i]->setup_unit($i, $units);
                }
        }
}
 
class Pin
{      
       public function setup_unit($pin_no, $units)
       {
                $this->do_counter();
                echo "Setting up unit " . $units[$this->c] . "\n";
                $this->set_bitmask($pin_no);
                $this->set_unit_no($units[$this->c]);
                $this->create_call_file($units[$this->c]);
        }
 
        public function do_counter()
        {
                if (! isset($this->c))
                {
                        $this->c = 0;
                        echo "Not set\n";
                }
                else
                {
                        $this->c++;
                        echo "C is " . $this->c . "\n";
                }
        }
}

Output for 5.6.38, 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 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
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

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176.08 ms | 402 KiB | 208 Q