csu3_am335x/EVSE/GPL/php-8.1.12/ext/gd/tests/imageflip.phpt

--TEST--
Testing imageflip() of GD library
--EXTENSIONS--
gd
--FILE--
<?php

$im = imagecreatetruecolor( 99, 99 );

imagesetpixel($im, 0, 0, 0xFF);
imagesetpixel($im, 0, 98, 0x00FF00);
imagesetpixel($im, 98, 0, 0xFF0000);
imagesetpixel($im, 98, 98, 0x0000FF);

imageflip($im, IMG_FLIP_HORIZONTAL);
imageflip($im, IMG_FLIP_VERTICAL);
imageflip($im, IMG_FLIP_BOTH);

var_dump(dechex(imagecolorat($im, 0, 0)));
var_dump(dechex(imagecolorat($im, 0, 98)));
var_dump(dechex(imagecolorat($im, 98, 0)));
var_dump(dechex(imagecolorat($im, 98, 98)));
?>
--EXPECT--
string(2) "ff"
string(4) "ff00"
string(6) "ff0000"
string(2) "ff"