The feature illustrated below operates on PHP values, objects, or language metadata.
What Is get_mangled_object_vars in PHP?
Returns all non-static properties of an object in an associative array, encoding protected and private property names with NUL-delimited scope prefixes.
get_mangled_object_vars(object $object) : arrayParameters:
$object— Required. The object being inspected or initialized.
Return type: array. Private and protected names contain NUL bytes and are not ordinary identifiers.
Example 1: Understanding the Basic Behavior
<?php
class Account { public string $name = 'Alex'; protected int $balance = 40; private string $secret = 'hidden'; }
$propertyKeys = array_keys(get_mangled_object_vars(new Account()));
foreach ($propertyKeys as $propertyKey) { echo str_replace("\0", "[NUL]", $propertyKey) . "\n"; }Output:
name
[NUL]*[NUL]balance
[NUL]Account[NUL]secretExplanation: Returns all non-static properties of an object in an associative array, encoding protected and private property names with NUL-delimited scope prefixes.
Example 2: Testing Another Case
<?php
class Item { public int $id = 4; private string $code = 'A'; }
foreach (get_mangled_object_vars(new Item()) as $key => $value) { echo strlen($key) . '\n'; }Output:
2\n10\nExplanation: Private and protected names contain NUL bytes and are not ordinary identifiers.
Practical Example: Applying the Operation
<?php
class Task { private bool $finished = false; public string $title = 'Review'; }
$allProperties = get_mangled_object_vars(new Task());
echo count($allProperties);Output:
2Explanation: Avoid sending hidden property data directly to API clients or logs.
Important Behavior and Edge Cases
- Private and protected names contain NUL bytes and are not ordinary identifiers.
- Avoid sending hidden property data directly to API clients or logs.
Comparison With Related Approaches
| Approach | When to Use It |
|---|---|
get_mangled_object_vars | Returns all non-static properties of an object in an associative array, encoding protected and private property names with NUL-delimited scope prefixes. |
get_object_vars() | get_object_vars() exposes only properties visible from the calling scope; get_mangled_object_vars() includes scope-mangled hidden properties. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Using the returned mangled private or protected keys as ordinary public property names. | Private and protected names contain NUL bytes and are not ordinary identifiers. |
| Choosing get_object_vars() without checking whether it provides the same result. | get_object_vars() exposes only properties visible from the calling scope; get_mangled_object_vars() includes scope-mangled hidden properties. |
Key Takeaways
- Returns all non-static properties of an object in an associative array, encoding protected and private property names with NUL-delimited scope prefixes.
- Private and protected names contain NUL bytes and are not ordinary identifiers.
- Avoid sending hidden property data directly to API clients or logs.
The examples demonstrate where get_mangled_object_vars fits within php programming. Verify the relevant preconditions whenever you adapt the code to real data.