Online PHP editor | output for W8qch

@ 2014-09-20T14:48:25Z

<?php

class Dictionary
{

    private $kMap;

    private $vMap;

    private $kvHashMap;

    private $vkHashMap;

    public function add($k, $v)
    {
        $kHash = spl_object_hash($k);
        $vHash = spl_object_hash($v);
        $this->kMap[$kHash] = $k;
        $this->vMap[$vHash] = $v;
        $this->kvHashMap[$kHash] = $vHash;
        $this->vkHashMap[$vHash] = $kHash;
    }

    public function get($k)
    {
        $kHash = spl_object_hash($k);
        if (isset($this->kvHashMap[$kHash])) {
            $vHash = $this->kvHashMap[$kHash];
            if (isset($this->vMap[$vHash])) {
                return $this->vMap[$vHash];
            }
        }
        return null;
    }

    public function getKey($v)
    {
        $vHash = spl_object_hash($v);
        if (isset($this->vkHashMap[$vHash])) {
            $kHash = $this->vkHashMap[$vHash];
            if (isset($this->kMap[$kHash])) {
                return $this->kMap[$kHash];
            }
        }
        return null;
    }

}

$dictionary = new Dictionary();
$k = (object) ['i' => 'am a key'];
$v = (object) ['i' => 'am a value'];

$dictionary->add($k, $v);
var_dump($dictionary->get($k));
var_dump($dictionary->getKey($v));

Output for 5.4.0 - 5.4.45, 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 - 8.3.6: object(stdClass)#3 (1) { ["i"]=> string(10) "am a value" } object(stdClass)#2 (1) { ["i"]=> string(8) "am a key" }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/W8qch on line 51
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected '[' in /in/W8qch on line 51
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/W8qch on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/W8qch on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/W8qch on line 6
Process exited with code 255.

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