Online PHP editor | output for JLiCU

@ 2017-07-13T15:32:50Z

<?php

$names = ['Adamelsini', 'Mark', 'Gonz', 'Tim'];


$randomizer = function ($names) {
    if (1 === count($names) / 2) {
        $names[] = 'Pete';
    }
    
    $pairs = [];
        
    $iteration = 0;
    while (count($names) > 0) {
        ++$iteration; if ($iteration > 10) break;
            
        $drawn = array_rand($names, 2);

        $pair = [$names[$drawn[0]], $names[$drawn[1]]];
        unset($names[$drawn[0]], $names[$drawn[1]]);

        $pairs[] = $pair;
    }

    $result = "The PP randomizer has selected: \n";
    foreach ($pairs as $p) {
        $result .= " -> {$p[0]} and {$p[1]}\n";
    }
        
    return $result;
};

echo $randomizer($names);

Output for 7.0.14, 7.1.0 - 7.1.1, 7.2.8, 7.2.10, 7.3.1: The PP randomizer has selected: -> Adamelsini and Mark -> Gonz and Tim
Output for 7.0.5, 7.0.7, 7.0.9, 7.2.1 - 7.2.2, 7.2.9, 7.3.0: The PP randomizer has selected: -> Mark and Gonz -> Adamelsini and Tim
Output for 7.0.4, 7.0.8, 7.0.13, 7.0.19, 7.1.5 - 7.1.7, 7.2.7, 7.2.13: The PP randomizer has selected: -> Mark and Tim -> Adamelsini and Gonz
Output for 7.0.1 - 7.0.2, 7.0.11 - 7.0.12, 7.0.17, 7.1.4, 7.2.3, 7.2.12: The PP randomizer has selected: -> Gonz and Tim -> Adamelsini and Mark
Output for 7.0.15 - 7.0.16, 7.0.18, 7.1.2 - 7.1.3, 7.1.25, 7.2.5 - 7.2.6, 7.2.11: The PP randomizer has selected: -> Adamelsini and Tim -> Mark and Gonz
Output for 7.0.0, 7.0.3, 7.0.6, 7.0.10, 7.0.20, 7.2.0, 7.2.4: The PP randomizer has selected: -> Adamelsini and Gonz -> Mark and Tim

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