Endianness check in PHP

endianness.php

<?php

/*
Taken from https://stackoverflow.com/questions/9744904/how-to-get-the-endianness-type-in-php
*/

function isLittleEndian() {
    $testint = 0x00FF;
    $p = pack('S', $testint);
    return $testint===current(unpack('v', $p));
}

if (isLittleEndian()) {
  echo "Little endian.\n";
}
else
{
  echo "Big endian.\n";
}

?>