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<?php |
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namespace Elgg\Json; |
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/** |
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* Encode and decode JSON while converting empty string keys to a unique token. |
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* |
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* This gets around PHP's limitation of not allowing empty string object property names. |
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* https://bugs.php.net/bug.php?id=46600 |
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* |
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* @package Elgg.Core |
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* @subpackage Json |
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* @access private |
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*/ |
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class EmptyKeyEncoding { |
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/** |
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* @var string |
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*/ |
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protected $token; |
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/** |
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* Constructor |
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* |
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* @param string $empty_key Optional key to replace "" keys with in JSON decode |
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*/ |
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public function __construct($empty_key = '') { |
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if (!$empty_key) { |
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$empty_key = sha1(microtime(true) . mt_rand()); |
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} |
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$this->token = $empty_key; |
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} |
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/** |
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* Get the key that represents an empty string key in JSON |
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* |
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* @return string |
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*/ |
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public function getEmptyKey() { |
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return $this->token; |
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} |
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/** |
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* Decode JSON while converting empty keys to a unique token. |
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* |
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* @param string $json JSON string |
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* @param bool $assoc Convert objects to assoc arrays? |
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* @param int $depth Allowed recursion depth |
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* @param int $options Bitmask json_decode options |
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* |
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* @return mixed |
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* @see json_decode |
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*/ |
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public function decode($json, $assoc = false, $depth = 512, $options = 0) { |
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// Replace empty keys with the unique token |
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$json = preg_replace('~([^"\\\\])""\\s*\\:~', "$1\"{$this->token}\":", $json, -1, $count); |
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return json_decode($json, $assoc, $depth, $options); |
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} |
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/** |
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* Encode JSON while converting unique token keys to empty strings |
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* |
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* @param mixed $value Value to encode |
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* @param int $options Encoding options |
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* @param int $depth Allowed recursion depth. Do not set this before PHP 5.5 |
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* |
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* @return string|false |
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*/ |
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public function encode($value, $options = 0, $depth = 512) { |
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if ($depth == 512) { |
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// PHP 5.4 and earlier will choke if depth is passed in |
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$json = json_encode($value, $options); |
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} else { |
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$json = json_encode($value, $options, $depth); |
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} |
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// Replace unique tokens with empty strings |
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if (is_string($json)) { |
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$json = str_replace("\"{$this->token}\"", '""', $json); |
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} |
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return $json; |
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} |
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} |
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Elgg /
Elgg
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This check compares calls to functions or methods with their respective definitions. If the call has less arguments than are defined, it raises an issue.
If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress. Please note the @ignore annotation hint above.