wp-includes/pomo/mo.php:201$magicintstring|false 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; } }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/pomo/mo.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.