Title: MO::get_byteorder
Published: April 25, 2014
Last modified: May 20, 2026

---

# MO::get_byteorder( int $magic ): string|false

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#related)

[ Back to top](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#wp--skip-link--target)

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#parameters)󠁿

 `$magic`intrequired

## 󠀁[Return](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#return)󠁿

 string|false

## 󠀁[Source](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#source)󠁿

    ```php
    public function get_byteorder( $magic ) {
    	// The magic is 0x950412de.

    	// bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565
    	$magic_little    = (int) - 1794895138;
    	$magic_little_64 = (int) 2500072158;
    	// 0xde120495
    	$magic_big = ( (int) - 569244523 ) & 0xFFFFFFFF;
    	if ( $magic_little === $magic || $magic_little_64 === $magic ) {
    		return 'little';
    	} elseif ( $magic_big === $magic ) {
    		return 'big';
    	} else {
    		return false;
    	}
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/pomo/mo.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/pomo/mo.php#L201)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/mo.php#L201-L216)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/mo/get_byteorder/?output_format=md#related)󠁿

| Used by | Description | 
| [MO::import_from_reader()](https://developer.wordpress.org/reference/classes/mo/import_from_reader/)`wp-includes/pomo/mo.php` |  |

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